WorldWideScience
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Rheology and BIA  

Science.gov (United States)

Is it possible to link erythrosedimentation to a global monofrequency of 50KHz bio impedance analysis parameters? Two populations, Control (N=20, average age of 38 ± 18 years, 55% female predominance) versus neopathology undergoing chemotherapy treatment (N=10, average age of 51 ± 10 years, 70% female predominance) were exposed to two simple tests: Blood composition and erythrosedimentation and global Bio Impedance mono frequency (50 KHz) assessment analysis. The Results of simple statistical tests (average, anova) show that the two populations were significantly different (1%), using both biological bood tests or BIA. Only the neopathological group showed a significant correlation between the erythrosedimentation the bio impedance parameters such as Phase angle or Xc (ratio - 0.93 and - 0.93)

Piquemal, M.; Zanotti, J. C.

2012-12-01

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Rheology and BIA  

International Nuclear Information System (INIS)

Is it possible to link erythrosedimentation to a global monofrequency of 50KHz bio impedance analysis parameters? Two populations, Control (N=20, average age of 38 ± 18 years, 55% female predominance) versus neopathology undergoing chemotherapy treatment (N=10, average age of 51 ± 10 years, 70% female predominance) were exposed to two simple tests: Blood composition and erythrosedimentation and global Bio Impedance mono frequency (50 KHz) assessment analysis. The Results of simple statistical tests (average, anova) show that the two populations were significantly different (1%), using both biological bood tests or BIA. Only the neopathological group showed a significant correlation between the erythrosedimentation the bio impedance parameters such as Phase angle or Xc (ratio ? 0.93 and ? 0.93)

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34 CFR 673.6 - Coordination with BIA grants.  

Science.gov (United States)

...2010-07-01 false Coordination with BIA grants. 673.6 Section 673.6 Education...FEDERAL SUPPLEMENTAL EDUCATIONAL OPPORTUNITY GRANT PROGRAM General Provisions for the...Programs § 673.6 Coordination with BIA grants. (a) Coordination of BIA...

2010-07-01

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Use of electrocardiogram (ECG) electrodes for Bioelectrical Impedance Analysis (BIA)  

International Nuclear Information System (INIS)

BIA is a safe, noninvasive, portable and relatively inexpensive method of estimating body composition that is practical and suitable for individual use and large-scale studies. However, the cost of the electrodes recommended by some BIA manufacturers is too high for developing countries; where very often the long and complicated process of importation reduces the time they can be used. The purpose of this study was to evaluate the use of two types of ECG electrodes (2290 and 2228 by 3M®) in BIA measurements to decrease the costs of the test. The results showed that the 2228 ECG electrodes can be used in BIA measurements for adult's body composition assessment. These electrodes are available in the domestic market and their costs are 92% lower than the electrodes recommended by manufacturer. The results show a new cost-benefit relation for BIA method and make this a more accessible tool for individual tests, large-scale researches and studies in the community.

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Use of electrocardiogram (ECG) electrodes for Bioelectrical Impedance Analysis (BIA)  

Science.gov (United States)

BIA is a safe, noninvasive, portable and relatively inexpensive method of estimating body composition that is practical and suitable for individual use and large-scale studies. However, the cost of the electrodes recommended by some BIA manufacturers is too high for developing countries; where very often the long and complicated process of importation reduces the time they can be used. The purpose of this study was to evaluate the use of two types of ECG electrodes (2290 and 2228 by 3M®) in BIA measurements to decrease the costs of the test. The results showed that the 2228 ECG electrodes can be used in BIA measurements for adult's body composition assessment. These electrodes are available in the domestic market and their costs are 92% lower than the electrodes recommended by manufacturer. The results show a new cost-benefit relation for BIA method and make this a more accessible tool for individual tests, large-scale researches and studies in the community.

Caicedo-Eraso, J. C.; González-Correa, C. H.; González-Correa, C. A.

2012-12-01

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25 CFR 170.425 - How does BIA update the IRRTIP?  

Science.gov (United States)

...regional IRRTIP. (b) The tribe reviews any new transportation planning information, priority lists, and TTIP and forwards an updated TTIP or project listing to BIA Regional Office on or before July 15. (c) The BIA regional office...

2010-04-01

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Product ion studies of diastereomeric benzo[ghi]fluoranthene-2'-deoxynucleoside adducts by electrospray ionization and quadrupole ion trap mass spectrometry  

International Nuclear Information System (INIS)

The product ion formation characteristics of the protonated molecule ions generated from 10 different deoxynucleoside adducts of benzo[ghi]fluoranthene (B[ghi]F) have been studied using electrospray ionization (ESI) and quadrupole ion trap mass spectrometry to gain a better understanding of the fragmentation mechanisms that govern structure-specific fragmentation. The reaction of the syn- and anti-diastereomers of trans-3,4-dihydroxy-5,5a-tetrahydrobenzo[ghi]fluoranthene with DNA produce four deoxyguanosine, four deoxyadenosine, and two deoxycytidine adducts whose structures differ based on the cis/trans arrangement of the hydroxyl groups and nucleic acids bound to B[ghi]F. Those adducts that have structures where the nucleic acid and 3'-hydroxyl group of B[ghi]F are cis with respect to each other undergo extensive water loss whereas those isomers where the nucleic acid and 3'-hydroxyl group are trans do not. These results are consistent with a mechanism of water loss initiated by a hydrogen-bonding interaction between the charge-bearing proton on a heterocyclic nitrogen atom on the nucleic acid and the 3'-hydroxyl oxygen on the PAH. The dG and dC adducts are observed to undergo more extensive water loss than the dA adducts. Molecular modeling indicates that the larger relative abundances of the product ions formed by water loss for the dG and dC relative to dA are due to stronger hydrogen-bonding interactions prior to fragmentation and the greater stability of the catation and the greater stability of the carbocations formed at the C3' carbon after fragmentation

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Eslicarbazepine acetate (BIA 2-093).  

Science.gov (United States)

Eslicarbazepine acetate (ESL) [(S)-(--)-10-acetoxy-10,11-dihydro-5H-dibenz[b,f]azepine-5-carboxamide], formerly known as BIA 2-093, is a novel central nervous system (CNS)-active compound with anticonvulsant activity. It behaves as a voltage-gated sodium channel (VGSC) blocker and is currently under clinical development for the treatment of epilepsy and bipolar disorder. ESL shares with carbamazepine and oxcarbazepine the dibenzazepine nucleus bearing the 5-carboxamide substitute, but is structurally different at the 10,11-position. This molecular variation results in differences in metabolism, preventing the formation of toxic epoxide metabolites such as carbamazepine-10,11 epoxide. In pharmacokinetic studies in humans, ESL was rapidly and extensively metabolized to eslicarbazepine (S-licarbazepine), which is responsible for pharmacological activity. ESL has been tested in patients with refractory partial-onset seizures and was found to be efficacious and well tolerated. Monotherapy studies in adult epileptic patients and add-on studies in epileptic children are in the planning process. The efficacy and safety data appear to be very promising considering the refractory nature of the epileptic population enrolled in studies to date. Results of ongoing phase III studies in adult epileptic patients are expected to be available in 2007 and are required to define the position of ESL in the therapy of patients with epilepsy. PMID:17199020

Almeida, Luis; Soares-da-Silva, Patrício

2007-01-01

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Die Bedeutung der bioelektrischen Impedanzanalyse (BIA im geriatrischen Bereich  

Directory of Open Access Journals (Sweden)

Full Text Available Die bioelektrische Impedanzanalyse (BIA wird seit ca. 20 Jahren als schnelle und nichtinvasive Methode zur Bestimmung der Körperzusammensetzung eingesetzt. Nach Anlegen von je zwei Meßelektroden an Hand und Fuß des Probanden werden im hochfrequenten Wechselstromfeld (meist 50 kHz bei konstanter Stromstärke die Widerstände Resistanz (Rz, Ohmscher Widerstand und Reaktanz (Xc, kapazitiver Widerstand gemessen. Die physikalischen Grundlagen zur Auswertung der Meßergebnisse sind seit langem bekannt und folgen dem Ohmschen Gesetz. Der menschliche Körper wird modellhaft als System elektrischer Leiter betrachtet, wobei parallel und seriell verknüpfte Gewebe die Leiterbahnen darstellen. Für die Auswertung ist entscheidend, daß verschiedene Gewebe- und Zellarten den Strom unterschiedlich gut leiten. Das Skelett und die Fettmasse leiten den Strom so schlecht, daß sie bei der Widerstandsmessung mittels BIA nicht erfaßt werden. Das Muskelgewebe und die Extrazellulärräume leiten den Strom wesentlich besser und machen den Hauptanteil der Widerstandsmessung mit BIA aus.

Edlinger E

2002-01-01

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Identification of a new C28H14 polycyclic aromatic hydrocarbon as a product of supercritical fuel pyrolysis: Tribenzo[cd,ghi,lm]perylene.  

Science.gov (United States)

Tribenzo[cd,ghi,lm]perylene has been identified as a product of the supercritical pyrolysis of both toluene and Fischer-Tropsch synthetic jet fuel. This identification is based on HPLC/UV/MS data, which show that compound I, eluting immediately after five other C28H14 isomers, is also a C28H14 PAH. The UV spectrum of compound I has features of a benzenoid PAH, of which there are only eight C28H14 isomers. Four of these isomers--benzo[a]coronene, phenanthro[5,4,3,2-efghi]perylene, benzo[cd]naphtho[3,2,1,8-pqra]perylene, and benzo[pqr]naphtho[8,1,2-bcd]perylene--have already been identified as supercritical pyrolysis products by matching their UV spectra with those of respective reference standards. A fifth C28H14 PAH--benzo[ghi]naphtho[8,1,2-bcd]perylene, which does not have a reference standard--has also been recently identified through MS and UV data, use of annellation theory to predict UV spectral characteristics, and length-to-breadth ratio/retention time data. Of the remaining three isomers, bisanthene (IUPAC name phenanthro[1,10,9,8-opqra]perylene) has been determined not to be present in our product mixture, as its UV spectrum does not match that of any of our product PAH. Using annellation theory, we predict the UV spectral characteristics of the two remaining C28H14 benzenoid isomers, for which there are no reference standards (tribenzo[cd,ghi,lm]perylene and naphthaceno[3,4,5,6,7-defghij]naphthacene). Results from this analysis show that the predicted UV spectral features of tribenzo[cd,ghi,lm]perylene match those of compound I--and that those of naphthaceno[3,4,5,6,7-defghij]naphthacene are inconsistent with those of compound I. The length-to-breadth ratio of tribenzo[cd,ghi,lm]perylene also agrees with compound I's HPLC elution behavior. This is the first time that tribenzo[cd,ghi,lm]perylene (IUPAC name phenanthro[2,1,10,9,8,7-pqrstuv]pentaphene) has been identified as a product of fuel pyrolysis or combustion. PMID:17098241

McClaine, Jennifer W; Oña, Jorge O; Wornat, Mary J

2007-01-01

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Carotenoids in certain lichens of Bia?owie?a Forest  

OpenAIRE

Column-, and thin-layer chromatography revealed the presence of the following carotenoids in the thalli of 29 lichen species from Bia?owie?a Forest: ?-carotene, ?-carotene, ?-cryptoxanthin, ?-cryptoxanthin, lutein, 3'-epilutein, zeaxanthin, ?-carotene monoepoxide, lutein epoxide, antheraxanthin, 3'-hydroxyechinenone, ?-doradexanthin, canthaxanthin, astaxanthin, neoxani thin, violaxanthin and mutatoxanthin. The total content of carotenoids ranged from 16.83 (Cladonia rangiferina) to 92...

Bazyli Czeczuga

1994-01-01

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Bioelectrical impedance analysis in clinical practice: implications for hepatitis C therapy BIA and hepatitis C  

OpenAIRE

Abstract Background Body composition analysis using phase angle (PA), determined by bioelectrical impedance analysis (BIA), reflects tissue electrical properties and has prognostic value in liver cirrhosis. Objective of this prospective study was to investigate clinical use and prognostic value of BIA-derived phase angle and alterations in body composition for hepatitis C infection (HCV) following antiviral therapy. Methods 37 consecutive patients with HCV infection were enrolled, BIA was per...

Kahraman Alisan; Hilsenbeck Johannes; Nyga Monika; Ertle Judith; Wree Alexander; Plauth Mathias; Gerken Guido; Canbay Ali E

2010-01-01

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Preliminary bioelectrical impedance analysis (BIA) equation for body composition assessment in young females from Colombia  

International Nuclear Information System (INIS)

A previous study showed that reported BIA equations for body composition are not suitable for Colombian population. The purpose of this study was to develop and validate a preliminary BIA equation for body composition assessment in young females from Colombia, using hydrodensitometry as reference method. A sample of 30 young females was evaluated. Inclusion and exclusion criteria were defined to minimize the variability of BIA. Height, weight, BIA, residual lung volume (RV) and underwater weight (UWW) were measured. A preliminary BIA equation was developed (r2 = 0.72, SEE = 2.48 kg) by stepwise multiple regression with fat-free mass (FFM) as dependent variable and weight, height and impedance measurements as independent variables. The quality of regression was evaluated and a cross-validation against 50% of sample confirmed that results obtained with the preliminary BIA equation is interchangeable with results obtained with hydrodensitometry (r2 = 0.84, SEE = 2.62 kg). The preliminary BIA equation can be used for body composition assessment in young females from Colombia until a definitive equation is developed. The next step will be increasing the sample, including a second reference method, as deuterium oxide dilution (D2O), and using multi-frequency BIA (MF-BIA). It would also be desirable to develop equations for males and other ethnic groups in Colombia.

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25 CFR 170.401 - What is BIA's role in transportation planning?  

Science.gov (United States)

... What is BIA's role in transportation planning? Except as...Program budgets including transportation planning cost estimates; (g) Facilitating... (h) Participating in transportation planning and other...

2010-04-01

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25 CFR 166.815 - How will the BIA determine the amount of damages to Indian agricultural land?  

Science.gov (United States)

...will the BIA determine the amount of damages to Indian agricultural land? 166...GRAZING PERMITS Trespass Penalties, Damages, and Costs § 166.815 How will the BIA determine the amount of damages to Indian agricultural land?...

2010-04-01

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25 CFR 161.713 - How will BIA determine the amount of damages to Navajo Partitioned Lands?  

Science.gov (United States)

...How will BIA determine the amount of damages to Navajo Partitioned Lands? 161...GRAZING PERMITS Trespass Penalties, Damages, and Costs § 161.713 How will BIA determine the amount of damages to Navajo Partitioned Lands?...

2010-04-01

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25 CFR 170.227 - How does BIA develop and use the IRR Inventory?  

Science.gov (United States)

...does BIA develop and use the IRR Inventory? The IRR Inventory as defined in § 170.442 identifies...that BIA uses to generate the Cost to Construct (CTC) and Vehicle...components of RNDF. The IRR Inventory is developed through the...

2010-04-01

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Carotenoids in certain lichens of Bia?owie?a Forest  

Directory of Open Access Journals (Sweden)

Full Text Available Column-, and thin-layer chromatography revealed the presence of the following carotenoids in the thalli of 29 lichen species from Bia?owie?a Forest: ?-carotene, ?-carotene, ?-cryptoxanthin, ?-cryptoxanthin, lutein, 3'-epilutein, zeaxanthin, ?-carotene monoepoxide, lutein epoxide, antheraxanthin, 3'-hydroxyechinenone, ?-doradexanthin, canthaxanthin, astaxanthin, neoxani thin, violaxanthin and mutatoxanthin. The total content of carotenoids ranged from 16.83 (Cladonia rangiferina to 92.98 µg g dry wt (Xanthoria parietina. There were differences in carotenoid composition, concentration of each carotenoid, and in the total content in the thalli of four species collected from niches with different insolation.

Bazyli Czeczuga

1994-03-01

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25 CFR 170.803 - What facilities are eligible under the BIA Road Maintenance Program?  

Science.gov (United States)

... 170.803 Section 170.803 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER INDIAN RESERVATION ROADS PROGRAM BIA Road...ensure public health, safety, and economy, and if the tribe executes an...

2010-04-01

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Bia?ka szoku termicznego w reumatoidalnym zapaleniu stawów: przyjaciel czy wróg?  

Directory of Open Access Journals (Sweden)

Full Text Available Reumatoidalne zapalenie stawów (RZS jest jedn? z najcz??ciej wyst?puj?cych chorób reumatycznych na ?wiecie. RZS to uci??liwa, progresywna oraz wci?? nieuleczalna uk?adowa choroba tkanki ??cznej o pod?o?u autoimmunizacyjnym. Liczne doniesienia wskazuj?, i? silnie zachowane w ewolucji bia?ka szoku termicznego (HSP oddzia?uj? z uk?adem immunologicznym. Ostatnie prace badawcze dowodz?, ?e bia?ka HSP pe?ni? istotn? rol? w regulacji chronicznej reakcji zapalnej w RZS, przy czym najwi?cej informacji dotyczy roli bia?ek opieku?czych nale??cych do klasy HSP70, HSP60 i HSP40. Praca omawia doniesienia naukowe z ostatnich lat dotycz?ce roli bia?ek HSP w rozwoju chorób reumatycznych oraz potencjalne mo?liwo?ci zastosowania HSP w immunoterapii pacjentów cierpi?cych na RZS.

Stefan Tukaj

2011-06-01

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25 CFR 103.6 - To what extent will BIA guarantee or insure a loan?  

Science.gov (United States)

...makes a claim under its insurance coverage. (c) BIA's...certificate or loan insurance agreement should reflect the lowest guaranty or insurance percentage rate that satisfies the lender's risk management requirements....

2010-04-01

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The Economic Value of Laem Phak Bia Mangrove Ecosystem Services in Phetchaburi Province, Thailand  

OpenAIRE

Thailand is a one of the nation in Southeast Asia, covered by numerous mangrove areas approximately 244,000 hectares. Phetchaburi province is the one of the province in Thailand where the mangrove area has been increasing continually since King’s Royally Initiated Laem Phak Bia Environmental Research and Development Project has been set up. The mangrove ecosystems functions are vital to the livelihood of the surrounding community. Laem Phak Bia community is one that has been served from man...

Sitthinan Wiwatthanapornchai; Chucheep Piputsitee; Samakkee Boonyawat

2014-01-01

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Analiza wyst?powania patogenów grzybiczych w pracowniach rehabilitacyjnych w Bia?ymstoku i Krakowie  

Directory of Open Access Journals (Sweden)

Full Text Available Wprowadzenie: Patogeny grzybicze stanowi? bardzo wa?ny element sk?adowy tzw. aerozolu biologicznego. Ich ?ród?em mo?e by? personel, pacjent, powietrze, sprz?t szpitalny, urz?dzenia wodno-kanalizacyjne i filtracyjne szpitala. Cel pracy: Ocena cz?sto?ci wyst?powania patogenów grzybiczych w pracowniach rehabilitacyjnych w Bia?ymstoku i Krakowie oraz wykazanie ewentualnych zale?no?ci mi?dzy lokalizacj? pracowni, liczb? kolonii grzybów a temperatur? i wilgotno?ci? w nich panuj?c?. Materia? i metody: Badania przeprowadzono w wybranych pracowniach rehabilitacyjnych Bia?egostoku i Krakowa. Materia? do bada? stanowi?o powietrze pobierane: przy wej?ciach do budynku, korytarzu oraz w wybranych pomieszczeniach, a tak?e próbki pobierane ze ?cian, materacy, ?awek, wanien, ?cian basenu. Do monitorowania zanieczyszczenia powietrza grzybami u?yto aparatu SAS SUPER 100, a pomiaru wilgotno?ci i temperatury termohigrometru PWT-401 firmy Elmetron. Biologiczne monitorowanie ska?enia powierzchni prowadzono za pomoc? aplikatora Count-Tact. Klasyfikacji wyizolowanych grzybów dokonywano zgodnie z obowi?zuj?cymi procedurami. Wyniki: Najwi?ksz? liczb? grzybów izolowano z próbek powietrza pobranych z sali kinezyterapii (Bia?ystok - 36 CFU/l, Kraków - 21 CFU/l oraz z korytarza II (Bia?ystok -34 CFU/l, Kraków - 20 CFU/l. Najwy?sza temperatura w Bia?ymstoku panowa?a na korytarzu przed wej?ciem do budynku (23,5°C, w Krakowie - w gabineciefizykoterapii (26,4°C. Najwy?sz? wilgotno?? wzgl?dn? stwierdzono w Bia?ymstoku (31,6% na korytarzu II, a w Krakowie na korytarzu II (41,4%. Z badanych powierzchni ?cian, w obu miastach, najwi?ksz? liczb? kolonii grzybów izolowano w brudowniku (Bia?ystok-14 CFU/l, Kraków -11 CFU/l. Z próbek pobranego powietrza w Bia?ymstoku najcz??ciej izolowano grzyby z gatunku Candidaalbicans, a w Krakowie z rodzaju Chrysosporium. Ze ?cian w Bia?ymstoku w wi?kszo?ci izolowano grzyby z gatunku Candida albicans, a w Krakowie z rodzaju Penicillium. Wnioski: G?ównym patogenem izolowanym z próbek pobranego powietrza w Bia?ymstoku by? grzyb z gatunku Candida albicans, a w Krakowie z rodzaju Chrysosporium. Wykazano istotne zale?no?ci mi?dzy ?rednimi warto?ciami CFU/l w zale?no?ci od miejsca poboru próbek powietrza. Temperatura i wilgotno?? panuj?ce w badanych pomieszczeniach ?wiadcz? o korzystnych warunkach do rozwoju grzybów.

El?bieta Krajewska-Ku?ak

2009-03-01

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Bioelectrical impedance analysis (BIA): a proposal for standardization of the classical method in adults  

International Nuclear Information System (INIS)

The accuracy of BIA measurements is limited by different sources of error such as physical model, cross sectional area, ethnicity, body hydration, age and level of body fat among other variables. Equation for each population is required as they can produce overestimation when manufacturer's equations are used. The classical measurements hand to foot has shown better correlation against hydrodensitometry than foot to foot or hand to hand. However there is a lack for an accepted standard of BIA procedures. This is compounded when there is not a good report of the BIA study's methodology; hence the comparability between the results is poor and reduces the reliability of the method. Perhaps, standardization of methods would be the first step for BIA studies to move forward and subsequently improve its accuracy. Standardized procedures could also minimize the impact of these variables on studies results. The aim of this study was to propose a protocol as a checklist to standardize BIA procedures and produce comparable results from future studies performed with the classic hand-foot configuration in adults.

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Investigação de baixa estatura: aspectos clínicos, laboratoriais e moleculares da insensibilidade ao hormônio de crescimento / Short stature investigation: clinical, laboratorial and genetic aspects concerning the trowth hormone insensitivity (GHI)  

Scientific Electronic Library Online (English)

Full Text Available Neste artigo são descritos os aspectos clínicos, laboratoriais e genéticos da investigação da baixa estatura, dando ênfase para o diagnóstico da insensibilidade ao hormônio de crescimento (IGH). O paciente apresentado possuía características clínicas típicas de pacientes com IGH e em idade pré-púber [...] e seus achados laboratoriais eram compatíveis com este diagnóstico (IGF-1 e IGFBP3 baixos, GH basal e pós-estímulo elevados). No entanto, quando avaliado durante a puberdade, as dosagens de IGF-1 e IGFBP-3 foram normais, dificultando o diagnóstico. O estudo molecular identificou mutação no exon 7 do gene do receptor do hormônio de crescimento (S226I). Discutiram-se os passos realizados para identificar a mutação e demonstrar que ela é responsável pelo fenótipo observado no paciente. Também será feita revisão dos casos de IGH descritos no Brasil e dos novos defeitos moleculares descritos nesta doença. Abstract in english It is reported in this study the clinical, laboratory and genetic aspects of short stature investigation with emphasis to the diagnostic approach of growth hormone insensitivity (GHI). This patient in case presented typical clinical features of GHI and his laboratory findings at prepubertal age were [...] typical of those observed in GHI patients (low IGF-1 and IGFBP-3 levels, with high basal and stimulated GH levels). However, during the puberty, he presented normal IGFBP-3 and IGF-1 levels that hindered the diagnosis. The molecular study disclosed a mutation in exon 7 of growth hormone receptor gene (S226I). The steps that demonstrated the causative effect of this mutation are shown here, and also a review of Brazilian GHI cases is given and new molecular defects in this field are discussed as well.

Alexander Augusto de Lima, Jorge; Maria Adelaide Albergaria, Pereira.

1056-10-01

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Pharmacokinetic–pharmacodynamic interaction between BIA 3-202, a novel COMT inhibitor, and levodopa / benserazide  

OpenAIRE

BIA 3-202 is a novel catechol-O-methyltransferase (COMT) inhibitor being developed for use as a levodopa-sparing agent in Parkinson_s disease. This study investigated the effect of four single oral doses of BIA 3-202 (50 mg, 100 mg, 200 mg, and 400 mg) compared with placebo on plasma concentrations of levodopa and its metabolite 3-O-methyl-levodopa (3-OMD) and on inhibition of erythrocyte COMT in healthy subjects receiving 100 mg of levodopa and 25 mg of benserazide ...

Silveira, Pedro; Vaz-da-silva, Manuel; Almeida, Lui?s; Maia, Joana; Falca?o, Ami?lcar; Loureiro, Ana; Torra?o, Leonel; Machado, Rita; Wright, Lyndon; Soares-da-silva, Patri?cio

2003-01-01

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Determinação rápida de hidroquinona usando análise por injeção em batelada (BIA) com detecção amperométrica / Fast determination of hydroquinone by batch injection analysis (BIA) with amperometric detection  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese [...] Abstract in english A fast analytical method for determination of hydroquinone in pharmaceutical formulations employing batch injection analysis (BIA) with amperometric detection using a boron-doped diamond electrode is described. The supporting electrolyte was a 0.1 mol L-1 H2SO4 solution (the single reagent used for [...] analysis). The method showed good repeatability (RSD of 0.45%, n=20), wide linear range (from 10 to 2000 µmol L-1, R=0.9999), low detection limit (0.016 µmol L-1) and satisfactory recovery values (91-96%). Accuracy of the method was evaluated by comparative analyses using high-performance liquid-chromatography. The ability to replace the electronic pipette by disposable syringes (injection procedure) in BIA systems was also shown.

Rafael Rodrigues, Cunha; Thiago Faria, Tormin; Eduardo Mathias, Richter; Rodrigo Alejandro Abarza, Munoz.

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Word Repetition, Masked Orthographic Priming, and Language Switching: Bilingual Studies and BIA+ Simulations  

Science.gov (United States)

Daily conversations contain many repetitions of identical and similar word forms. For bilinguals, the words can even come from the same or different languages. How do such repetitions affect the human word recognition system? The Bilingual Interactive Activation Plus (BIA+) model provides a theoretical and computational framework for understanding…

Lam, Kevin J. Y.; Dijkstra, Ton

2010-01-01

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Species of lichenized and allied fungi new to Bia?owie?a Large Forest (NE Poland  

Directory of Open Access Journals (Sweden)

Full Text Available The paper presents 38 species of lichenized and allied fungi new to Bia?owie?a Large Forest. 24 taxa of lichenized Ascomycota and 14 taxa of lichenicolous and saprobic fungi are the result of the analysis of collected materials as well as additional field studies.

Krystyna Czy?ewska

2001-06-01

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25 CFR 115.426 - What is the BIA's responsibility regarding the management of a minor's supervised account?  

Science.gov (United States)

...responsibility regarding the management of a minor's supervised account? 115.426...responsibility regarding the management of a minor's supervised account? The BIA's...in regard to the management of a minor's supervised account is to:...

2010-04-01

31

Design and Development of a Portable WiFi enabled BIA device  

International Nuclear Information System (INIS)

A bioimpedance device (BIA) for evaluation of sarcopenia – age related muscle mass loss – is designed, developed and evaluated. The requirements were based on lightweight design, flexible and user enabled incorporation of measurement protocols and WiFi protocol for remote device control, full internet integration and fast development and usage of measurement protocols. The current design is based on usage of a microcontroller with integrated AD/DA converters. The prototype system was assembled and the operation and connectivity to different handheld devices and laptop computers was successfully tested. The designed BIA device can be accessed using TCP sockets and once the connection is established the data transfer runs successfully at the specified speed. The accuracy of currently developed prototype is about 5% for the impedance modulus and 5 deg. for the phase for the frequencies below 20 kHz with an unfiltered excitation signal and no additional amplifiers employed.

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Inwazyjne zaka?enia grzybicze o trudnym przebiegu w trakcie leczenia ostrej bia?aczki limfoblastycznej  

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Full Text Available Inwazyjne zaka?enia grzybicze (IZG u dzieci z rozpoznan? ostr? bia?aczk? limfoblastyczn? (ALL stanowi? trudny problem diagnostyczny i terapeutyczny. W niniejszej pracy przed stawiono 2 pacjentki z ALL oraz zlokalizowanym inwazyjnym zaka?eniem grzybiczym zdiagnozowanym typowo, podczas przebiegu gor?czki neutropenicznej. Mimo wczesnej terapii przeciwgrzybiczej, jedna z pacjentek, 3-letnia dziewczynka,zmar?a z powodu progresji IZG.

Gra?yna Sobol

2009-06-01

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Comparisons of obesity assessments in over-weight elementary students using anthropometry, BIA, CT and DEXA  

OpenAIRE

Obesity was characterized in Korean elementary students using different obesity assessment tests on 103 overweight elementary students from three schools of Jeonbuk Province. The body mass index (BMI) and obesity index (OI) were compared, and the data using DEXA and CT were compared with the data using BIA and a tape measure. The results of this study are as follows: first, 27 students who were classified as obese by OI were classified as overweight by BMI, and 3 students who were classified ...

Yu, Ok-kyeong; Rhee, Yang-keun; Park, Tae-sun; Cha, Youn-soo

2010-01-01

34

Bioelectrical impedance analysis in clinical practice: implications for hepatitis C therapy BIA and hepatitis C  

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Full Text Available Abstract Background Body composition analysis using phase angle (PA, determined by bioelectrical impedance analysis (BIA, reflects tissue electrical properties and has prognostic value in liver cirrhosis. Objective of this prospective study was to investigate clinical use and prognostic value of BIA-derived phase angle and alterations in body composition for hepatitis C infection (HCV following antiviral therapy. Methods 37 consecutive patients with HCV infection were enrolled, BIA was performed, and PA was calculated from each pair of measurements. 22 HCV genotype 3 patients treated for 24 weeks and 15 genotype 1 patients treated for 48 weeks, were examined before and after antiviral treatment and compared to 10 untreated HCV patients at 0, 24, and 48 weeks. Basic laboratory data were correlated to body composition alterations. Results Significant reduction in body fat (BF: 24.2 ± 6.7 kg vs. 19.9 ± 6.6 kg, genotype1; 15.4 ± 10.9 kg vs. 13.2 ± 12.1 kg, genotype 3 and body cell mass (BCM: 27.3 ± 6.8 kg vs. 24.3 ± 7.2 kg, genotype1; 27.7 ± 8.8 kg vs. 24.6 ± 7.6 kg, genotype 3 was found following treatment. PA in genotype 3 patients was significantly lowered after antiviral treatment compared to initial measurements (5.9 ± 0.7° vs. 5.4 ± 0.8°. Total body water (TBW was significantly decreased in treated patients with genotype 1 (41.4 ± 7.9 l vs. 40.8 ± 9.5 l. PA reduction was accompanied by flu-like syndromes, whereas TBW decline was more frequently associated with fatigue and cephalgia. Discussion BIA offers a sophisticated analysis of body composition including BF, BCM, and TBW for HCV patients following antiviral regimens. PA reduction was associated with increased adverse effects of the antiviral therapy allowing a more dynamic therapy application.

Kahraman Alisan

2010-08-01

35

The Economic Value of Laem Phak Bia Mangrove Ecosystem Services in Phetchaburi Province, Thailand  

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Full Text Available Thailand is a one of the nation in Southeast Asia, covered by numerous mangrove areas approximately 244,000 hectares. Phetchaburi province is the one of the province in Thailand where the mangrove area has been increasing continually since King’s Royally Initiated Laem Phak Bia Environmental Research and Development Project has been set up. The mangrove ecosystems functions are vital to the livelihood of the surrounding community. Laem Phak Bia community is one that has been served from mangrove ecosystem services. This study assessed the economic value of Laem Phak Bia mangrove ecosystem services in an area approximately 237.44 hectares using Participatory Economic Valuation (PEV by the villagers ranking and rating the importance of mangrove ecosystem services with a valuable thing for living that is the rice value. The results showed that this mangrove area was worth a total economic value about 100 million Baht per year or 424 thousand Baht per hectares per year. It could be divided into the value of regulation functions, production functions, habitat functions and information functions, which were about 38, 8, 25, and 29 million Baht per year, respectively.

Sitthinan Wiwatthanapornchai

2014-08-01

36

Comparison of body composition techniques before and after a 161-km ultramarathon using DXA, BIS and BIA.  

Science.gov (United States)

The low cost, ease of application and portability of bioelectrical impedance analysis (BIA) and spectroscopy (BIS) devices make them attractive tools for measuring acute changes in body composition before and after exercise, despite potential limitations from active compartmental fluid shifts. The primary study aim was to evaluate use of dual energy x-ray absorptiometry (DXA) against BIA and BIS in measurements of percent body fat (%BF) and percent total body water (%TBW) before and after prolonged endurance exercise. 10 runners were measured pre-race and at race finish. Significant linear relationships were noted pre-race between DXA vs. BIS for %BF (r(2)=0.76; pendurance running. PMID:25285467

Hew-Butler, T; Holexa, B T; Fogard, K; Stuempfle, K J; Hoffman, M D

2015-02-01

37

Coproscopical investigations of the European otter (Lutra lutra) from Bia?owieza Primeval Forest.  

Science.gov (United States)

The parasitofauna of the European otter (Lutra lutra) remains poorly known in Poland. In the presented study 106 fecal samples from otters living in the Bia?owieza Primeval Forest were examined, using standard flotation and sedimentation methods. We found that the overall prevalence of parasitic infections was 30.1%. Eggs of Alaria alata (0.9%), Opistorchis or Metorchis sp. (5.7%), Diphyllobothrium latum (1.9%) and Aonchotheca putori (1.9%) were identified, but in other cases the species of parasite could not be reliably determined. Parasitological dissections should give better results in future studies. PMID:20707304

Górski, Pawe?; Zalewski, Andrzej; Kazimierczak, Katarzyna; Kotomski, Grzegorz

2010-01-01

38

Ekspresja wybranych bia?ek supresorowych cyklu komórkowego w postaci powierzchownej i guzkowej raka podstawnokomórkowego skóry  

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Full Text Available Wprowadzenie: Raki podstawnokomórkowe skóry (basal cell carcinoma, BCC s? najcz?stszymi nowotworami wyst?puj?cymi u ludzi rasy kaukaskiej. W?ród ich wielu odmian klinicznych i histopatologicznych w praktyce kliniczne najcz??ciej spotykana jest posta? powierzchowna (pBCC i guzkowa (gBCC. Maj? one odmienn? morfologi?, co mo?e ?wiadczy? o ich odmienno?ci patogenetycznej. W rozwoju BCC rozwa?a si? udzia? wielu czynników, m.in. postuluje si? rol? dysregulacji cyklu komórkowego. Cel pracy: Celem pracy by?o okre?lenie ekspresji wybranych bia?ek supresorowych cyklu komórkowego, tj. p21, p27, p16, p18 i retinoblastoma (pRB. Materia? i metody: Do bada? zakwalifikowano 22 chorych na BCC: u 11 osób rozpoznano posta? pBCC (grupa 1, u 11 - posta? gBCC (gBCC, a tak?e 4 osoby zdrowe stanowi?ce kontrol? (grupa 3. W pobranych biopsjach okre?lano metod? immunohistochemiczn? liczb? komórek wykazuj?cych ekspresje bia?ek p21, p27, p16, p18 i pRB. Wyniki: ?rednia liczba komórek p21(+, p27(+, p16(+, p18(+ i pRB(+ by?a istotnie wy?sza w grupie 1 i 2 w porównaniu z grup? kontroln? (p<0,05 dla wszystkich porówna?. Stwierdzono równie? istotnie mniejsz? liczb? komórek p21(+, p27(+, p16(+, p18(+ w grupie 1 ni? w 2 (p<0,05 dla wszystkich porówna?. Zale?no?ci takiej nie stwierdzono analizuj?c ekspresj? pRB. Wnioski: Uzyskane wyniki w?asne potwierdzaj? udzia? dysregulacji ekspresji bia?ek supresorowych cyklu komórkowego w patogenezie raków podstawnokomórkowych skóry. Odmienna ekspresja bia?ek p21, p27, p16 i p18 w postaci powierzchownej i guzkowej BCC ?wiadczy o odmienno?ci patogenetycznej tych dwóch najcz?stszych postaci BCC, wskazuj?c jednocze?nie na wi?ksz? z?o?liwo?? na poziomie molekularnym postaci powierzchownej.

Cezary Jochymski

2008-12-01

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Przeciwcia?a dla cytrulinowanych bia?ek – nowe kierunki bada?  

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Full Text Available Reumatoidalne zapalenie stawów jest najcz??ciej wyst?puj?c?,przewlek?? chorob? zapaln? stawów, której etiologia ci?gle niezosta?a poznana. Rozpoznanie tej choroby, mimo ustalonych kryteriówdiagnostycznych, wci?? jest problematyczne, zw?aszcza wewczesnym stadium.Obiecuj?cym parametrem laboratoryjnym, który obok wysokiejswoisto?ci i specyficzno?ci ma du?e znaczenie prognostyczne, s?przeciwcia?a przeciwko bia?kom cytrulinowanym. Mog? one wyst?powa?wiele lat wcze?niej przed pojawieniem si? pierwszych objawówchoroby, ponadto s? powi?zane z obecno?ci? tzw. wspólnegoepitopu predysponuj?cego do zachorowania na RZS.Pojawienie si? antycytrulinowych przeciwcia? jest wynikiem nadmiernejekspresji cytrulinowanych bia?ek w zmienionych zapalnietkankach. Dlatego te? identyfikacja deiminowanych antygenówi ich lokalizacja oraz zbadanie zmian funkcjonalnych wywo?anychcytrulinacj? sta?o si? ostatnio przedmiotem intensywnych bada?.Wysoka homologia mi?dzy wywo?uj?c? produkcj? przeciwcia?ludzk? cytrulinowan? ?-enolaz? a enolaz? bakteryjn? zwróci?auwag? na infekcyjny aspekt etiologii RZS. Na szczególne zainteresowaniezas?uguje Porphyromonas gingivalis, jedyny drobnoustrójwytwarzaj?cy deiminaz? peptydyloargininow?, enzym odpowiedzialnyza cytrulinacj? u eukariota.Przedstawione wyniki bada? pozwalaj? na lepsze zrozumieniezmian zachodz?cych w przebiegu reumatoidalnego zapalenia stawów,co daje nadziej? na wcze?niejsze jej zdiagnozowanie i wdro?enieleczenia.

Elwira Biernacka

2010-08-01

40

25 CFR 170.437 - How must BIA or a tribe inform the public when no hearing is held?  

Science.gov (United States)

...tribe inform the public when no hearing is held? 170.437 Section 170.437 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF...Roads Program Facilities Public Hearings § 170.437 How must BIA or a tribe inform the public when...

2010-04-01

41

Baltic Sea coastal erosion; a case study from the Jastrz?bia Góra region  

Science.gov (United States)

The coastline in the Jastrz?bia Góra area can be divided into three major zones of general importance: a beach and barrier section, a cliff section, and a section protected by a heavy hydrotechnical construction. These areas are characterised by a diverse geology and origin, and hence different vulnerability to erosion. In addition, observations have demonstrated a different pace of erosion within each zone. Based on the results obtained by remote sensing methods (analysis of aerial photographs and maps), it has been determined that the coastline in the barrier area, i.e., to the west of Jastrz?bia Góra, moved landwards by about 130 m, in a period of 100 years, and 80 m over about 50 years. A smaller displacement of the shoreline could be observed within the cliff. Between the middle of the twentieth and the start of the twenty-first centuries the shore retreated by about 25 m. However, in recent years, an active landslide has led to the displacement of the uppermost part of the cliff locally up to 25 m. Another issue is, functioning since 2000, a heavy hydrotechnical construction which has been built in order to protect the most active part of the cliff. The construction is not stable and its western part, over a distance of 50 m, has moved almost 2 m vertically downwards and c. 2.5 m horizontally towards the sea in the past two years. This illustrates that the erosional factor does not comprise only marine abrasion, but also involves land-based processes determined by geology and hydrogeology. Changes in the shoreline at the beach and barrier part are constantly conditioned by rising sea levels, the slightly sloping profile of the sea floor and low elevation values of the backshore and dune areas. Cliffs are destroyed by mass wasting and repetitive storm surges that are responsible for the removal of the colluvium which protects the coast from adverse wave effects. Presumably, mass movements combined with groundwater outflow from the cliff, plus sea abrasion cause destabilisation of the cliff protection construction.

U?cinowicz, Grzegorz; Kramarska, Regina; Kaulbarsz, Dorota; Jurys, Leszek; Frydel, Jerzy; Przezdziecki, Piotr; Jegli?ski, Wojciech

2014-12-01

42

Baltic Sea coastal erosion; a case study from the Jastrz?bia Góra region  

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Full Text Available The coastline in the Jastrz?bia Góra area can be divided into three major zones of general importance: a beach and barrier section, a cliff section, and a section protected by a heavy hydrotechnical construction. These areas are characterised by a diverse geology and origin, and hence different vulnerability to erosion. In addition, observations have demonstrated a different pace of erosion within each zone. Based on the results obtained by remote sensing methods (analysis of aerial photographs and maps, it has been determined that the coastline in the barrier area, i.e., to the west of Jastrz?bia Góra, moved landwards by about 130 m, in a period of 100 years, and 80 m over about 50 years. A smaller displacement of the shoreline could be observed within the cliff. Between the middle of the twentieth and the start of the twenty-first centuries the shore retreated by about 25 m. However, in recent years, an active landslide has led to the displacement of the uppermost part of the cliff locally up to 25 m. Another issue is, functioning since 2000, a heavy hydrotechnical construction which has been built in order to protect the most active part of the cliff. The construction is not stable and its western part, over a distance of 50 m, has moved almost 2 m vertically downwards and c. 2.5 m horizontally towards the sea in the past two years. This illustrates that the erosional factor does not comprise only marine abrasion, but also involves land-based processes determined by geology and hydrogeology. Changes in the shoreline at the beach and barrier part are constantly conditioned by rising sea levels, the slightly sloping profile of the sea floor and low elevation values of the backshore and dune areas. Cliffs are destroyed by mass wasting and repetitive storm surges that are responsible for the removal of the colluvium which protects the coast from adverse wave effects. Presumably, mass movements combined with groundwater outflow from the cliff, plus sea abrasion cause destabilisation of the cliff protection construction.

U?cinowicz Grzegorz

2014-12-01

43

[Dietary assessment of adults in three villages in Warsaw, Radom and Bia?a Podlaska districts].  

Science.gov (United States)

The objectives of this study was the assessment of dietary patterns of adults individuals living in three villages: Celestynów (Warsaw district), Jasionka (Bia?a podlaska district) and Babin (Radom district) in Poland. The study was conducted in winter 1994/95 among 71 men and 77 women aged 18 years or more. The information on food consumption during one weekday was obtained by 24-hour dietary recall method. On the average the percentage of total energy intake from proteins and fats was above the recommended limits whereas the proportion of energy derived from carbohydrates was slightly deficient. For women the average daily intake of most nutrients under study (with exception of animal proteins, fats, sodium, phosphorus, manganese, vitamin E, B2 and niacin) was below recommended levels. The consumption of carbohydrates (also dietary fiber), magnesium, zinc, copper, calcium was 29-35% below recommendations and case of vitamin C-51%. In general men had higher mean intake of energy and nutrients than women. Their average daily diet did not meet recommendation only for carbohydrates, dietary fiber, calcium magnesium, copper, vitamin C and A. Men consumed too much animal proteins, sodium, phosphorus and cholesterol. Daily consumption of minerals and vitamins from diet and supplements together for those subjects who used supplements (41% of respondents) met or exceed recommended dietary intake, with exception of potassium for women. Taking consideration number of faults founded in the nutrition patterns of adults from rural area more nutritional study in this subpopulation group should be conducted. PMID:9847681

Pietruszka, B; Brzozowska, A; Puzio-Debska, A

1998-01-01

44

Molekularne i cytogenetyczne czynniki prognostyczne w ostrej bia?aczce szpikowej (OBS  

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Full Text Available Ostre bia?aczki szpikowe (OBS stanowi? niejednorodn? grup? chorób, zró?nicowan? pod wzgl?dem przebiegu, odpowiedzi na terapi? oraz zmian cytogenetycznych i molekularnych. Zmiany te maj? znaczenie prognostyczne. Korzystnie rokuj? chorzy z t(8;21, inv(16/t(16;16 i t(15;17. Chorzy z prawid?owym kariotypem i aberracjami: 6, 8, –Y, t(9;11 i del(12p nale?? do grupy rokowania po?redniego. W przypadku chorych ze z?o?onym kariotypem lub zmianami typu: inv(3/t(3;3, t(6;9, –5, –7, del(5q, del(7q, rearan?acje 11q23 – rokowanie jest niekorzystne. Do niekorzystnych molekularnych czynników prognostycznych zalicza si?: amplifikacj? [i]C-MYC[/i], amplifikacje i rearan?acje [i]MLL[/i], [i]FLT3-ITD[/i], mutacj? [i]WT1[/i], nadekspresj? BAALC, [i]ERG[/i] i [i]MN1[/i]. Mutacje genów CEBPA i NPM1 uznaje si? za korzystne czynniki prognostyczne. Istotne rokowniczo w OBS s? tak?e zmiany ekspresji niektórych miRNA.Heterogenno?? OBS uzasadnia potrzeb? prowadzenia bada? cytogenetycznych i molekularnych w celu okre?lenia zmian m.in. u chorych z prawid?owym kariotypem w klasycznym badaniu cytogenetycznym. Techniki macierzowe umo?liwiaj? analiz? genomowego DNA oraz profilowanie ekspresji genów w poszukiwaniu sygnatur prognostycznych i predykcyjnych.

Szymon Zmorzy?ski

2011-01-01

45

Bioelectrical impedance analysis (BIA) for sarcopenic obesity (SO) diagnosis in young female subjects  

International Nuclear Information System (INIS)

Sarcopenia is defined as a loss of muscle mass depending of ageing and affecting physical function (definition A). A new definition considers excluding mass reduction criterion (definition B). Obesity is pandemic and occurs at all ages. Sarcopenic obesity (SO) implies both processes. The purpose of this study was to compare the results obtained after applying these 2 definitions in 66 aged 22 ± 2.8 years overweight or obese young college women. Percentage body fat (%BF) and skeletal mass index (SMI) were estimated by BIA, muscle function by handgrip strength test (HGS) and physical performance by Harvard step test (HST). There were 9.1% and 90.9% overweight or obese subjects. Twenty nine subjects (43.9%) had decreased HGS and 22 (33.3%) had impaired physical performance. One obese subject (1.5%) met the criteria for sarcopenic obesity by definition A and 9 (13.6%) by definition B. Although a linear regression (? 2 = 0.094, 0.037 and 0.275 respectively) it was observed a tendency for HGS, HST and SMI deterioration when %BF increases. However, other confounding factors must be investigated. Probably as the population gets more obese, the problematic of SO will be found earlier in life.

46

Analysis of activity in swine producers group based on agricultural producers association in Bia?a district  

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Full Text Available The process of pigs producer groups formation in Poland is quite dynamic. Currently on the pork market 181 groups operate, which includes about 4000 swine producers. The aim of this study was to characterize the activities of the Agricultural Producers Association in Bia?a District. The research tool was a personal questionnaire and the research sample consisted of 30 farmers. It has been shown that after joining the producers group, the investigated households reported an increase in sales volume and improved the flock production parameters. Majority of the respondents were not satisfied with the cooperation with meat processing companies.

Damian Knecht

2013-03-01

47

25 CFR 162.252 - What will BIA do if a violation of an agricultural lease is not cured within the requisite time...  

Science.gov (United States)

...WATER LEASES AND PERMITS Agricultural Leases Lease Enforcement...BIA do if a violation of an agricultural lease is not cured within...not cure a violation of an agricultural lease within the requisite...from the date on which the extension is granted....

2010-04-01

48

PHYSICAL ACTIVITY AND LEISURE TIME AMONG 13-15-YEAR-OLD TEENAGERS LIVING IN BIA?A PODLASKA  

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Full Text Available The aim of the research was to get information about physical activity and forms of spending leisure time by teenagers between 13 and 15 years old, who live in Bia?a Podlaska. The research included 229 pupils from three Grammar Schools (115 girls and 114 boys. The range of respondents’ age is from 13 to 15 years old. The research tool was anonymous questionnaire consisting of questions concerning healthy lifestyle, physical activity and forms of spending leisure time. In total, the questionnaire consisted of 17 both open and close questions. On the basis of the questionnaire, it was proved that pupils’ knowledge on physical education and health is low (37-47% of correct answers. Young people more and more often choose passive forms of activity. Boys much more often take up active forms of exercise than girls. Teenagers devote most time to physical activity, the development of interests and taking care of one’s own appearance.

Grad Rafa?

2013-02-01

49

Molecular Dynamics of Spin Crossover: the (P,T) phase diagram of [Fe(PM-BIA)2(NCS)2  

CERN Document Server

The spin crossover properties and the domains of existence of the different phases for the [Fe(PM-BIA)2(NCS)2] complex are obtained from combining DFT and classical molecular dynamics (MD). The potential energy surfaces expressed in the Morse form for Fe-N interactions are deduced from molecular DFT calculations and they allow producing Infra Red and Raman frequencies. These Fe-N potentials inserted in a classical force field lead from MD calculations to the relative energies of the high spin and low spin configurations of the orthorhombic structure. The MD investigations have also allowed assessing the experimental (P, T) phase diagram by showing the monoclinic polymorph in its two spin- states, and generating two triple points.

Marbeuf, A; Matar, S F; Kabalan, L; Létard, J F; Guionneau, P

2013-01-01

50

Water Quality from Mangrove Forest: The King’s Royally Initiated Laem Phak Bia Environmental Research and Development Project, Phetchaburi Province, Thailand  

OpenAIRE

The study was aimed to study water quality treated by mangrove forest. This study has been conducted at the mangrove forest site of the King’s Royally Initiated Laem Phak Bia Environmental Research and Development Project (the Royal LERD Project), Ban Laem District, Phetchaburi Province, Thailand. The study site, where Avicennia marina is dominant plant, is divided into in 3 areas; (A) the tideland area between constructed pond and mangrove forest, 200 meters from outlet (B) area of mangrov...

Orathai Jitthaisong; Pricha Dhanmanonda; Kasem Chunkao; Sakhan Teejuntuk

2012-01-01

51

Ekspresja kinazy Jak3 i aktywacja bia?ka Stat3 u chorych na reumatoidalne zapalenie stawów i spondyloartropatie zapalne  

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Full Text Available Wst?p: Uk?ad przeka?nikowy Jak/Stat (kinaza tyrozynowaJanus/sygna? transdukcji i aktywacji transkrypcji jest wykorzystywanyprzez wiele cytokin, czynników wzrostu i hormonów reguluj?cychmechanizmy transkrypcji genów oraz aktywacji, proliferacji,ró?nicowania i apoptozy komórek. Wyniki dotychczasowych bada?wskazuj?, ?e kinaza Jak3 odgrywa istotn? rol? w patogeneziereumatoidalnego zapalenia stawów (RZS. Cel pracy: Ocena ekspresji Jak3 oraz aktywacji Stat3 w leukocytachkrwi obwodowej (LKO i komórkach p?ynu stawowego (KPSu chorych na RZS i spondyloartropatie zapalne (SpaZ oraz analizazwi?zku badanych parametrów ze wska?nikami aktywno?ci chorobyu?ywanymi w praktyce klinicznej. Ponadto analizie poddanozale?no?ci mi?dzy ekspresj? Jak3 a aktywacj? Stat3. Materia? i metody: Do badania zakwalifikowano 19 chorych na RZSoraz 22 chorych na SpaZ (zesztywniaj?ce zapalenie stawów, ?uszczycowezapalenie stawów, spondyloartropatia niezró?nico wana.Grup? kontroln? stanowi?y 23 zdrowe osoby. W badanych grupachw LKO metod? immunocytochemiczn? oznaczono ekspresj? kinazyJak3 i aktywacj? bia?ka Stat3. T? sam? metod? oznaczono ekspresj?Jak3 i aktywacj? Stat3 u 11 chorych na RZS i u 12 chorych na SpaZw KPS. U chorych zosta?y oznaczone warto ?ci parametrów stanuzapalnego oraz wska?ników aktywno?ci choroby DAS28 i BASDAI.Wykonano rentgenogramy stawów zaj?tych procesem chorobowym. Wyniki: Ekspresja Jak3 oraz aktywacja Stat3 by?y znacz?co wy?szeu chorych na RZS i SpaZ w porównaniu z grup? kontroln?. War to -?ci te by?y wy?sze w KPS ni? w LKO. U chorych na RZS zaobserwowanododatni? korelacj? mi?dzy aktywno?ci? Stat3 w KPSa warto?ci? CRP. Nie wykazano korelacji mi?dzy ekspresj? Jak3a aktywacj? Stat3. Wnioski: Funkcja Jak3 i Stat3 jest zwi?zana z procesem immunolo -gicznym w przebiegu RZS i SpaZ. Wydaje si?, ?e zablokowanie ichfunkcji mo?e stanowi? cel terapeutyczny w obydwu grupach chorych.

Andrzej Steciwko

2010-08-01

52

Participation and Protected Areas Governance: the Impact of Changing Influence of Local Authorities on the Conservation of the Bia?owie?a Primeval Forest, Poland  

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Full Text Available According to the new conservation paradigm, protected areas should contribute to the socioeconomic development of host communities, and the latter ought to be included in participatory decision making concerning these areas. However, the understanding of participation is ambiguous and there are at least three major approaches, which may have different impacts on the governance of protected areas. We examine the case of the Bia?owie?a Primeval Forest in order to trace the effectiveness of changing modes of participation as well as to discuss the limitations and problems of public participation. Between 1918 and 2010, the role of local authorities changed from no influence to limited control over decision making regarding designation and enlargement of the Bia?owie?a National Park (BNP. As a result of these changes, attempts to enlarge the BNP over the whole forest were undermined. The evidence shows that power relations and instrumental reasons constituted the main drivers of the changing participation pattern with deliberative rationale lacking. As a result, the conservation goals were only partially achieved. We argue that when interests are clearly conflicting and win–win solutions are difficult to reach, room for constructive participation may be limited. In these circumstances, public involvement may turn into yet another venue for a power play between actors with vested interests, without bringing gains in legitimacy or new policy options. This is especially the case for countries with a relatively short democratic record where the government lacks the consistency and capacity to steer the process over the longer term.

Jouni Paavola

2012-03-01

53

Generalized GHY term for f(R) Gravity  

CERN Document Server

A generalization to the Gibbons-Hawking-York boundary term for metric $f(R)$ gravity theories is introduced. A redefinition of the Gibbons-Hawking-York term is proposed. The proposed new definition is used to derive a consistent set of field equations and is extended to metric $f(R)$ gravity theories. The surface terms in the action are gathered into a total variation of some quantity. A total divergence term is added to the action to cancel these terms. Finally, the new definition is proven to demand no restrictions on the value of ${\\delta g}_{ab}$ or ${\\partial}_{c}{\\delta g}_{ab}$ on the boundary.

Alhamzawi, Ahmed

2014-01-01

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Poikilodermia jako objaw choroby przeszczep przeciw gospodarzowi u pacjenta po przeszczepie szpiku kostnego z powodu przewlek?ej bia?aczki szpikowej - opis przypadku  

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Full Text Available Choroba przeszczep przeciw gospodarzowi jest jednym z cz?stszych powik?a? po przeszczepieniu narz?dów i szpiku kostnego oraz po transfuzji krwi i jej produktów zawieraj?cych immunokompetentne limfocyty. U podstaw choroby przeszczep przeciw gospodarzowi (GVHD le?y proliferacja limfocytów z przeszczepianych tkanek, które atakuj? narz?dy gospodarza, najcz??ciej skór?. Wyró?niamy postaæ ostr? GVHD, w której objawy pojawiaj? si? po ok. 3 tygodniach po wykonaniu transplantacji oraz postaæ przewlek?? GVHD, w przebiegu której pierwsze symptomy obserwuje si? ponad 100 dni od zabiegu. Niespecyficzne i bardzo ró?norodne zmiany skórne, zarówno w ostrej, jak i w przewlek?ej postaci choroby mog? byæ znamiennym objawem choroby przeszczep przeciw gospodarzowi. Najbardziej charakterystyczne dla GVHD s?zmiany twardzinopodobne. Objawy sugeruj?ce GVHD mog? byæ te? sprowokowane przez niektóre leki. Podkre?la si? te? liczne podobie?stwa mi?dzy GVHD a liszajem p?askim. Praca przedstawia przypadek pacjenta z poikilodermia, która mo?e byæ jednym z objawów GVHD. Pierwsze zmiany na skórze pojawi?y si? ok. 3 tygodnie po przeszczepieniu szpiku z powodu przewlek?ej bia?aczki szpikowej i by?y jedynym objawem GVHD.

Anna Rosi?ska

2007-03-01

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Study on the occurrence of tick-borne encephalitis virus RNA in European bison (Bison bonasus) eliminated at Bia?owieza Primeval Forest (north-eastern Poland) in 2005-2009.  

Science.gov (United States)

Tick-borne encephalitis virus (TBEV) (Flaviviridae, Flavivirus) is an arthropod-borne virus, an etiologic agent of tick-borne encephalitis (TBE), an infection involving the central nervous system. The disease is endemic in a large region in Eurasia where it is transmitted mainly by Ixodes ricinus in Europe and I. persulcatus ticks in Asia. This is the most important tick-transmitted arbovirus of human pathogenicity in Europe. The Bia?owieza Primeval Forest is a well-known endemic focus of tick-borne encephalitis. The aim of this study was to identify the prevalence of tickborne encephalitis virus (TBEV) in European bison, the important hosts of ticks in the Bia?owieza Primeval Forest. In the years 2005-2009, 95 blood samples were collected from European bison and examined for the presence of TBEV using nRT-PCR method. No positive results were obtained. For better understanding of TBEV vertebrate reservoir hosts in Poland, further investigations are needed. PMID:25115061

Biernat, Beata; Karbowiak, Grzegorz

2014-01-01

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Assessment of Bcl-2 and Bcl-XL proteins expression level during the course of various types of skin ageing. Ocena stopnia ekspresji bia?ek Bcl-2 i Bcl-XL w przebiegu ró?nego typu starzenia si? skóry.  

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Full Text Available Wprowadzenie: Mi?dzy takimi procesami, jak starzenie si?, apoptoza i nowotworzenie istniej? pewne zale?no?ci. Komórka albo starzeje si? albo ulega apoptoziepo to, ?eby nie sta? si? komórk? nowotworow?. Du?? rol? w regulacji tego procesu odgrywaj? bia?ka z grupy Bcl-2.Cel pracy: Ocena stopnia ekspresji bia?ka Bcl-2 oraz Bcl-XL w przebiegu starzenia chronologicznego, menopauzalnego i fotostarzenia si? w obr?bie naskórka i skóryw?a?ciwej.Materia? i metody: Badaniem obj?to grup? 60 zdrowych kobiet z ró?nymi objawami starzenia si? skóry w wieku od 26. do 62. r.?., które wyrazi?y dobrowolniezgod? na wzi?cie udzia?u w projekcie badawczym. Wyodr?bniono 3 niezale?ne grupy, ka?da licz?ca po 20 osób. Grup? I stanowi?y kobiety z objawami menopauzalnegostarzenia si? skóry, grup? II - z objawami fotostarzenia si?, a III - z objawami starzenia si? chronologicznego. Po ocenie stanu skóry od wszystkich badanychpobierano z okolicy przedusznej wycinek do bada? immunohistochemicznych.Wyniki bada?: Analizuj?c stopie? ekspresji bia?ek bior?cych udzia? w apoptozie, nie stwierdzono istotnych statystycznie ró?nic mi?dzy stopniem ekspresji Bcl-XLw badanych grupach. Porównuj?c stopie? ekspresji bia?ka Bcl-2 w skórze w?a?ciwej wykazano istotn? ró?nic? statystyczn? mi?dzy grupami I a II oraz blisko istotno?ci statystycznej mi?dzy grupami II a III.Wnioski: Istnieje znamiennie cz?stsza i silniejsza ekspresja bia?ka Bcl-2 w przebiegu fotostarzenia si?. Nie ma charakterystycznych ró?nic w ekspresji Bcl-XL mi?dzy poszczególnymi typami starzenia si?.

Alina Grzanka

2009-12-01

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The role of land-use visions for protection of forest landscapes: the Bia?owie?a Forest (Poland) / El rol de las visiones del uso del suelo en la protección de los paisajes forestales: el bosque de Bialowieza (Polonia)  

Scientific Electronic Library Online (English)

Full Text Available SciELO Chile | Language: English Abstract in spanish Esta investigación estudió las relaciones entre el uso y protección del bosque Bia?owie?a, Polonia, durante el último siglo, particularmente en las décadas de la post-guerra. Debido a los extraordinarios valores naturales, esta área necesita una protección muy especial. Sin embargo, se han observado [...] diversos impactos negativos sobre el paisaje. Los cambios implicaron perforación y fragmentación del bosque causados por la continua tala de árboles, debido a la expansión urbana asociada al desarrollo turístico. El objetivo de esta investigación fue identificar los forzantes subyacentes de tendencia negativa y los obstáculos para el progreso de la conservación de la naturaleza en la zona. Comparación de puntos de vista, visiones de uso del suelo y manejo del bosque, evidenciaron importantes diferencias en actitudes, perspectivas y expectativas aplicadas al bosque de Bia?owie?a. El estudio reveló la importancia de la dimensión socio-cultural en el estado actual de evolución del paisaje. Esta influencia está relacionada con una presión constante sobre la explotación maderera, por lo menos parcialmente, desde una fuerte posición de la administración forestal en esta área y desde visiones específicas de uso de suelo que enfatizan los servicios económicos de los bosques. Cabe destacar, que acciones realizadas en todo el país y los numerosos esfuerzos para ampliar las áreas de protección no han tenido éxito hasta el momento. Se argumenta que la subestimación de los valores naturales expresada por las comunidades locales, además de las debilidades de la legislación ambiental del Estado, pueden traer serias amenazas para el paisaje analizado y afectar a todo el sistema de conservación de la naturaleza en Polonia. Abstract in english The work concentrated on relations between the issues of use and protection that developed in the Polish part of the Bia?owie?a Forest last century, particularly during the post-war decades. Owing to extraordinary natural values, the area deserves very careful protection, however, negative impacts o [...] n the landscape have been widely observed. The changes involving perforation and fragmentation of forest cover caused by continuous logging are accompanied by spatial disorder in built areas and their vicinities resulting from tourism development. The aim of the research was to identify the underlying forces of negative tendencies and simultaneously, obstacles to progress in nature conservation of the area. Comparison of views and visions of land-use and management of the Forest showed that great differences in attitudes, applied perspectives and expectations to the Bia?owie?a Forest exist. The study revealed the importance of a socio-cultural dimension for a current stage of landscape evolution. This influence is connected with a steady pressure on wood exploitation and results, at least partially, from a strong position of forest administration in this area and from specific land-use visions emphasizing economic services of the forest. Noteworthy, actions undertaken across the country and numerous efforts to extend protection of the area have not succeeded so far. It is argued that underestimation of natural values expressed by local communities in addition to weaknesses of the state’s environmental law may bring serious hazards to the analysed landscape and affect the whole system of nature conservation in Poland.

Barbara, Bo& #380; & #281; tka.

58

Metody diagnostyczne niestabilnej i p?kni?tej blaszki mia?d?ycowej, z uwzgl?dnieniem zastosowania osoczowego bia?ka typu A zwi?zanego z ci??? - PAPP-A  

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Full Text Available Szacuje si?, ?e w wi?kszo?ci krajów europejskich choroba wie?cowa jest stwierdzana si? u 20-40 tysi?cy osób w przeliczeniu na milion mieszka?ców. Rocznie w Polsce hospitalizowanych jest ok. 200 tysi?cy pacjentów z ostrym zespo?em wie?cowym (OZW, z czego ok. 2/3 stanowi? przypadki z niestabiln? dusznic? bolesn? (UA i zawa?em serca bez uniesienia odcinka ST (NSTEMI, których cz?sto?? zwi?ksza si? w przeciwie?stwie do liczby zawa?ów z uniesieniem odcinka ST (STEMI. Dzi?ki odkryciom sekwencji zdarze? doprowadzaj?cych do powstania OZW, coraz wi?cej uwagi po?wi?ca si? charakterystyce podatnej na p?kni?cie blaszki mia?d?ycowej. Nowoczesna kardiologia k?adzie nacisk na prewencj? procesu destabilizacji blaszki mia?d?ycowej, który mo?e doprowadzi? do utraty ?ywotno?ci miokardium. Ogromna ró?norodno?? zdarze? zachodz?cych w ?cianie naczynia w przebiegu mia?d?ycy wi??e si? z rozwojem wielu metod diagnostycznych, pocz?wszy od biologii molekularnej, na zaawansowanych metodach obrazowych ko?cz?c. Brakuje jednak testu, który wyznaczy?by krytyczny etap kaskady niedokrwienia, czyli transformacj? blaszki stabilnej w niestabiln?. Marker taki umo?liwi?by podj?cie leczenia przed wyst?pieniem ostrego niedokrwienia, a jak wskazuj? ostatnie badania du?e nadzieje wi??e si? z osoczowym ci??owym bia?kiem typu A (PAPP-A.

Joanna Dudziak

2011-12-01

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Analysis of Suitability for Development of New Mining Field in Northern Part of Kosovo Lignite Basin - Sibovc / Analiza Mo?liwo?ci Udost?pnienia Nowego Obszaru Wybierania W Pó?nocnej Cz??ci Zag??bia W?gla Brunatnego Sibovc W Kosowie  

Science.gov (United States)

This review describes the possibility of development a new lignite deposit in northern Kosovo lignite basin - Sibovc. Analysis of the initial state briefly evaluates Kosovo energy sector, geomorphological conditions and quality of lignite from Sibovc deposit. With using Dataminesoft it was created geological model and approximate calculation of lignite reserves in the deposit. The data obtained from Dataminesoft were used as starting points of the financial analysis of project. The result of the analysis is exactly describe the qualitative and quantitative characteristics of deposit Sibovc compared to other deposits in the area and creating of geological model with productive horizons deposit of lignite. Based on these data lignite deposit Sibovc was classified, according to the classification of deposits the UN, as economical. W pracy tej omówiono mo?liwo?ci udost?pnienia nowego obszaru wybierania z?o?a w?gla brunatnego (lignitu) w pó?nocnej cz??ci zag??bia w?gla brunatnego Sibovc w Kosowie. W analizie stanu pocz?tkowego krótko scharakteryzowano sektor energetyczny Kosowa, warunki geo-morfologiczne oraz parametry jako?ciowe w?gla brunatnego z zag??bia Sibovc. Przy pomocy pakietu Dataminesoft stworzono model geologiczny i przeprowadzono przybli?one obliczenia zasobów w?gla brunatnego w z?o?u. Dane uzyskane przy zastosowaniu pakietu Dataminesoft zosta?y nast?pnie wykorzystane jako dane wej?ciowe do analizy finansowej przedsi?wzi?cia. Na podstawie wyników analizy uzyskuje si? jako?ciow? i ilo?ciow? charakterystyk? z?o?a w odniesieniu do pozosta?ych z?ó? w regionie. Opracowano model geologiczny ze szczegó?owym wskazaniem poziomów wybierania lignitu. W oparciu o te dane dokonano klasyfikacji z?o?a w?gla brunatnego (lignitu) w Sibovc zgodnie z mi?dzynarodowymi zasadami klasyfikacji wykazuj?c, ?e z?o?e b?dzie ekonomiczne.

Cehlár, Michal; Rybár, Radim; Pinka, Ján; Haxhiu, Lorik; Beer, Martin

2013-06-01

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Warto?? prognostyczna ilo?ciowego oznaczania sercowego bia?ka wi???cego kwasy t?uszczowe (h-FABP w grupie chorych z ostrym zespo?em wie?cowym  

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Full Text Available Wprowadzenie: Zawa? mi??nia sercowego wraz z powik?aniami stanowi jeden z najpowa?niejszych problemów wspó?czesnej kardiologii klinicznej. Spo?ród markerów biochemicznych, bia?ko sercowe wi???ce kwasy t?uszczowe (h-FABP, odznacza si? wysok? czu?o?ci? i swoisto?ci? we wczesnej fazie zawa?u. Od kilku lat dost?pny jest jako?ciowy test oznaczania h-FABP (poin ofcare test - POCT CardioDetect med., a od niedawna jest mo?liwa densy-tometryczna analiza ilo?ciowa tego wyniku przy u?yciu aparatu CardioDetect quant. Warto?? diagnostyczna h-FABP jest niepodwa?alna, natomiast, stosunkowo niewiele jest doniesie? zwi?zanych z ocen? jego warto?ci prognostycznej po ostrym zespole wie?cowym (OZW. Cel pracy: Celem badania by?a ocena warto?ci prognostycznej wczesnego, ilo?ciowego oznaczania h-FABP wodniesieniu do wyst?powania powa?nych uprzednio zdefiniowanych zdarze? sercowych i zwi?zanego z tym rokowania odleg?ego (180 dni w grupie 104 pacjentówz OZW. Materia? i metodyka: Do badania w??czonych zosta?o 104 pacjentówz OZW (34 kobiety, 70 m??czyzn, ?r. wieku 61 lat hospitalizowanych w II Katedrze Kardiologii w?odzi z powodu bólu w klatce piersiowej, utrzymuj?cego si? nie d?u?ej ni? 24 godz. przed przyj?ciem do szpitala. U ka?dego pacjenta oznaczano przy przyj?ciu i po 6 godz. jako?ciowo h-FABP. Nast?pnie by? on poddany analizie ilo?ciowej przy u?yciu czytnika Cardio Detect quant. Na podstawie kryteriów EKG i marker??w biochemicznych grupa 104 pacjentów liczy?a: 73 pacjentów z STEMI, 13 z NSTEMI, 18 z UA. Zgromadzono dane (wizyty kontrolne po 30 i 180 dniach, dotycz?ce cz?sto?ci wyst?powania powa?nych incydentów sercowo-naczyniowych (MACE. Wyniki: Porównano dok?adno?? diagnostyczn? wszystkich analizowanych markerów martwicy miokardium. W pierwszym pomiarze h-FABP charakte­ryzowa? si? 96,5% czu?o?ci?, 72,2% swoisto?ci?. Czu?o?? pozosta?ych markerów w pierwszym pomiarze by?a ni?sza i wynosi?a 90,7% dla CK-MBmass, 61,6% dla cTnT. Swoisto?? 61,1% dla CK-MBmass, 100% dla cTnT. Na podstawie zebranych danych okre?lono cz?sto?? wyst?powania uprzednio zdefi­niowanych zdarze? niepo??danych (zgon, MI, powtórna rewaskularyzacja i hospitalizacja w obserwacji 180-dniowej wzale?no?ci od wyników ilo?cio­wych h-FABP przy przyj?ciu, jak równie? po 6 godz. Pacjenci z dodatnim wynikiem h-FABP przy przyj?ciu mieli 6-krotnie wy?sze ryzyko wyst?pienia zdarze? niepo??danych (bez uwzgl?dniania hospitalizacji, ni? pacjenci z ujemnym wynikiem h-FABP przy przyj?ciu (95% CI 1,0386-6,9348. Analogicznie chorzyz dodatnim wynikiem h-FABP po 6godz. od przyj?cia mieli ponad 3-krotnie wy?sze ryzyko wyst?pienia MACE (z uwzgl?dnieniem hospitalizacji, ni? pacjenci z ujemnym wynikiem h-FABP po 6 godz. od przyj?cia (95% CI 1,1018-4,6816. Wnioski: Ilo?ciowy pomiar h-FABP charakteryzowa? si? wysok? czu?o?ci? i swoisto?ci?, wy?sz? ni? pomiar st??enia CK-MBmass i cTnT przy przyj?ciu w grupie pacjentów z OZW. Wynik dodatni h-FABP dostarcza istotnych informacji o charakterze prognostycznym dotycz?cych wyst?pienia z?o?onego punktu ko?cowego (zgon, MI, CABG, powtórna rewaskularyzacja, hospitalizacja u pacjentów po OZW w czasie 180 dni obserwacji.

Ma?gorzata Wraga

2009-06-01

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G?ówne bia?ko zasadowe eozynofilów (eosinophil major basic protein - MBP, IL-5, elastaza neutrofilowa i IL-8 w skórze zmienionej p?cherzowo a surowicze przeciwcia?a IgG przeciwko NC16a w ludzkim pemfigoidzie p?cherzowym  

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Full Text Available Wst?p: Uwa?a si?, ?e fragment NC16a kolagenu typu XVII obejmuje najbardziej istotne autoepitopy w patogenezie pemfigoidu p?cherzowego (BP. Wi?kszo?? bada? na modelach zwierz?cych i cz??? na populacji ludzkiej sugeruje, ?e neutrofile, a nie eozynofile, s? kluczowymi komórkami w BP. Cel pracy: Porównanie znaczenia IL-5, IL-8, g?ównego bia?ka zasadowego eozynofilów (MBP i elastazy neutrofilowej (NE w ludzkim BP na poziomie tkanki w odniesieniu do poziomu surowiczych przeciwcia? IgG przeciwko NC16a. Materia? i metody: Badaniami obj?to 51 przypadków BP i 77 chorych kontrolnych z innymi autoimmunizacyjnymi i nieautoimmunizacyjnymi dermato-zami p?cherzowymi. MBP w skórze obejmuj?cej ?wie?y p?cherz wykrywano technik? immunohistochemiczn? streptawidyna/peroksydaza. Poziomy IL-5, IL-8, NE w p?ynie p?cherzowym oraz IL-5 i przeciwcia?a IgG anty-NC16a w surowicy badano technikami ELISA. Wyniki: MBP wykryto w p?cherzowo zmienionej skórze u 54% chorych na BP i tylko u 30% chorych kontrolnych. W grupie chorych z BP st??enie IL-5 w p?ynie p?cherzowym by?o znamiennie wi?ksze od st??enia w surowicy, a tak?e od poziomu w p?ynach kontrolnych. Poziomy IL-8 i NE w p?ynach BP nie ró?ni?y si? znamiennie od poziomów w p?ynach kontrolnych. Nie stwierdzono znamiennej zale?no?ci mi?dzy obecno?ci? MBP w wykwitach BP a poziomami IL-5 w p?ynach BP i poziomami surowiczych przeciwcia? IgG anty-NC16a, ani znamiennej zale?no?ci mi?dzy poziomem NE w p?ynach BP a poziomami IL-8 w p?ynach BP i poziomami surowiczych przeciwcia? IgG anty-NC16a, ani te? znamiennej zale?no?ci mi?dzy poziomami surowiczych przeciwcia? IgG anty-NC16a a poziomami IL-5 i IL-8 w p?ynach BP. Wnioski: W tkance u chorych na BP dzia?ania IL-5 i MBP mog? mieæ istotniejsze znaczenie od dzia?a? IL-8 i NE. Dzia?anie IL-5 wydaje si? niepowi?zane z poziomem surowiczych przeciwcia? IgG anty-NC16a i obecno?ci? MBP w wykwitach.

Gra?yna Wolnik-Trzeciak

2005-03-01

62

Paola Bono - Bia Sarrasini (eds., Epiche. Altre imprese, altre narrazioni  

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Full Text Available Negli spazi affascinanti dell’Hangar Bicocca di Milano, accanto alle sublimi torri di Anselm Kiefer, è in corso in questi mesi un’ampia mostra, Light Time Tales, della famosa videoartista e performer americana Joan Jonas, da sempre affascinata dalla rilettura di saghe e testi epici, e tesa verso una ridefinizione continua della soggettività femminile. Nell’unica immensa sala buia, costellata da numerosi video e da alcune installazioni, il fruitore può costruirsi un proprio percorso più o meno labirintico, recependo in simultaneità frammenti di varie opere. Una prova di cosa possa significare oggi riproporre l’antichissimo genere dell’epica, nella nostra epoca intermediale, dominata dal multitasking.

Massimo Fusillo

2014-11-01

63

Mechanisms of Action of Carbamazepine and Its Derivatives, Oxcarbazepine, BIA 2-093, and BIA 2-024  

OpenAIRE

Carbamazepine (CBZ) has been extensively used in the treatment of epilepsy, as well as in the treatment of neuropathic pain and affective disorders. However, the mechanisms of action of this drug are not completely elucidated and are still a matter of debate. Since CBZ is not very effective in some epileptic patients and may cause several adverse effects, several antiepileptic drugs have been developed by structural variation of CBZ, such as oxcarbazepine (OXC), which is used in the treatment...

Ambro?sio, Anto?nio F.; Soares-da-silva, Patri?cio; Carvalho, Caetana M.; Carvalho, Arse?lio P.

2002-01-01

64

Análise dos resultados do uso precoce e tardio da assistência circulatória com balão intra-aórtico (BIA em pacientes submetidos a correção de cardiopatias com auxílio de circulação extracorpórea Analysis of the early and late use of the intra-aortic balloon pump as a method of mechanical support for the management of patients with low output syndrome, following cardiac surgery with cardiopulmonary bypass  

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Full Text Available Este estudo tem como objetivo, a análise retrospectiva do uso precoce (intra-operatório e tardio (pós-operatório do balão intra-aórtico. Foram estudados 130 pacientes do Texas Heart Institute, no período de janeiro a dezembro de 1987, sendo 103 do sexo masculino e 27 do sexo feminino; a idade média dos pacientes foi de 61,5 ± 10,76 (14 a 84 anos, a média de peso foi de 75,5 ± 16,6 (42 a 134 kg, a média de superfície corpórea de 1,87 ± 0,24 (1,08 a 2,60m² e um tempo médio de circulação extracorpórea de 98 (33 a 299 minutos e de pinçamento aórtico de 49 (10 a 122 minutos. O balão intra-aórtico foi usado em todos os pacientes por baixo débito cardíaco, em 4 associado a disrritmias retratarias a tratamento clínico e 2 por parada cardiorrespiratória, por períodos que variaram de 15 minutos a 256 horas. Os pacientes foram divididos em 6 grupos; Grupo I, pacientes que receberam o balão intra-aórtico no intra-operatório (precoce, Grupo II, pacientes que receberam o balão intra-aórtico no pós-operatório (tardio, Grupo III (pacientes com idade igual ou inferior a 65 anos, Grupo IV (pacientes com idade superior a 65 anos, Grupo V (pacientes com tempo de circulação extracorpórea de até 120 minutos e Grupo VI (pacientes com tempo de circulação extracorpórea superior a 120 minutos e 2 subdivisões nos grupos V e VI, subgrupo 1/. (pacientes com tempo de pinçamento de aorta menor ou igual a 60 minutos e subgrupo 2/. (pacientes com tempo de pinçamento de aorta maior que 60 minutos. Dos 130 pacientes submetidos ao BIA, 81 (62.3% sobreviveram e 49 (37,7% pacientes faleceram; destes, 38 (36,2% pertenciam ao Grupo I e 11 (44% ao Grupo II. A sobrevida foi maior no Grupo III (68,6% e menor no Grupo IV (51% com pThe purpose of this study was to evaluate the intra-aortic balloon pump as a method of mechanical support for the management of patients with low output syndrome, following cardiac surgery with cardiopulmonary bypass. The results with early (intra-operative and late (post-operative support were compared, as well as the relationship among cardiopulmonary bypass time, aortic clamp time and mortality. Pre-operative left ventricle ejection fraction, as a prognosis index, and complications rates were also analysed. One hundred and thirty patients from Texas Heart Institute, during the period of January to December 1987, were studied retrospectively; there were 103 men and 27 women, with a mean age of 61.5 ± 10.7 (14 to 84 years. The mean weight body and body surface area were 75.5 ± 16.6 (42 to 134 kilograms and 1.87 ± 0.24 (1.08 to 2.60 square meters respectively. The mean time of cardiopulmonary bypass was 98 (33 to 299 minutes and the mean time of aortic clamp was 49 (10 to 122 minutes. All the patients had low cardiac output, associated with refractary arrythmias in 4 and after cardiac arrest in the intensive care unit in 2 patients. The intra-aortic balloon pump was left for variable periods of time from 15 minutes to 256 hours. The all cohort was divided in six groups, according to the early (intra-operative insertion of the balloon pump (Group I, the late (post-operative insertion (Group II, patient's age equal or inferior to 65 years Group III and Group IV age superior to 65 years, Group V and VI according cardiopulmonary bypass time up to 120 or superior to 120 minutes, and both were divided according to aortic clamp time (subgroup 1, up to 60 minutes and subgroup 2, superior to 60 minutes. The outcome was successful in 81 (62.3% and 49 (37.7% died (36.2% from Group I and 44% from Group II. The survival rate was greater in Group III (68.6% than in Group IV (51 % with p<0.05 showing statistical relevance of mortality in the older group. There were no significant associations between ejection fraction, aortic clamp time versus mortality but cardiopulmonary bypass had high statistical significance with p<0.01 for times over 120 minutes. Complications were found in 6 patients (4.6%. These data suggest that intra-aortic balloon pump is an effective mechanical support for

Hugo de Moraes Sarmento Macruz

1995-12-01

65

Análise dos resultados do uso precoce e tardio da assistência circulatória com balão intra-aórtico (BIA) em pacientes submetidos a correção de cardiopatias com auxílio de circulação extracorpórea / Analysis of the early and late use of the intra-aortic balloon pump as a method of mechanical support for the management of patients with low output syndrome, following cardiac surgery with cardiopulmonary bypass  

Scientific Electronic Library Online (English)

Full Text Available Este estudo tem como objetivo, a análise retrospectiva do uso precoce (intra-operatório) e tardio (pós-operatório) do balão intra-aórtico. Foram estudados 130 pacientes do Texas Heart Institute, no período de janeiro a dezembro de 1987, sendo 103 do sexo masculino e 27 do sexo feminino; a idade médi [...] a dos pacientes foi de 61,5 ± 10,76 (14 a 84) anos, a média de peso foi de 75,5 ± 16,6 (42 a 134) kg, a média de superfície corpórea de 1,87 ± 0,24 (1,08 a 2,60)m² e um tempo médio de circulação extracorpórea de 98 (33 a 299) minutos e de pinçamento aórtico de 49 (10 a 122) minutos. O balão intra-aórtico foi usado em todos os pacientes por baixo débito cardíaco, em 4 associado a disrritmias retratarias a tratamento clínico e 2 por parada cardiorrespiratória, por períodos que variaram de 15 minutos a 256 horas. Os pacientes foram divididos em 6 grupos; Grupo I, pacientes que receberam o balão intra-aórtico no intra-operatório (precoce), Grupo II, pacientes que receberam o balão intra-aórtico no pós-operatório (tardio), Grupo III (pacientes com idade igual ou inferior a 65 anos), Grupo IV (pacientes com idade superior a 65 anos), Grupo V (pacientes com tempo de circulação extracorpórea de até 120 minutos) e Grupo VI (pacientes com tempo de circulação extracorpórea superior a 120 minutos) e 2 subdivisões nos grupos V e VI, subgrupo 1/. (pacientes com tempo de pinçamento de aorta menor ou igual a 60 minutos) e subgrupo 2/. (pacientes com tempo de pinçamento de aorta maior que 60 minutos). Dos 130 pacientes submetidos ao BIA, 81 (62.3%) sobreviveram e 49 (37,7%) pacientes faleceram; destes, 38 (36,2%) pertenciam ao Grupo I e 11 (44%) ao Grupo II. A sobrevida foi maior no Grupo III (68,6%) e menor no Grupo IV (51%) com p Abstract in english The purpose of this study was to evaluate the intra-aortic balloon pump as a method of mechanical support for the management of patients with low output syndrome, following cardiac surgery with cardiopulmonary bypass. The results with early (intra-operative) and late (post-operative) support were co [...] mpared, as well as the relationship among cardiopulmonary bypass time, aortic clamp time and mortality. Pre-operative left ventricle ejection fraction, as a prognosis index, and complications rates were also analysed. One hundred and thirty patients from Texas Heart Institute, during the period of January to December 1987, were studied retrospectively; there were 103 men and 27 women, with a mean age of 61.5 ± 10.7 (14 to 84) years. The mean weight body and body surface area were 75.5 ± 16.6 (42 to 134) kilograms and 1.87 ± 0.24 (1.08 to 2.60) square meters respectively. The mean time of cardiopulmonary bypass was 98 (33 to 299) minutes and the mean time of aortic clamp was 49 (10 to 122) minutes. All the patients had low cardiac output, associated with refractary arrythmias in 4 and after cardiac arrest in the intensive care unit in 2 patients. The intra-aortic balloon pump was left for variable periods of time from 15 minutes to 256 hours. The all cohort was divided in six groups, according to the early (intra-operative) insertion of the balloon pump (Group I), the late (post-operative) insertion (Group II), patient's age equal or inferior to 65 years Group III and Group IV age superior to 65 years, Group V and VI according cardiopulmonary bypass time up to 120 or superior to 120 minutes, and both were divided according to aortic clamp time (subgroup 1, up to 60 minutes and subgroup 2, superior to 60 minutes). The outcome was successful in 81 (62.3%) and 49 (37.7%) died (36.2% from Group I and 44% from Group II). The survival rate was greater in Group III (68.6%) than in Group IV (51 %) with p

Hugo de Moraes Sarmento, Macruz; Oscar Howard, Frazier; Denton A, Cooley.

1995-12-01

66

Ab Initio heats of formation of medium-sized hydrocarbons. 13. Studies of benzo[e]pyrene, benzo[ghi]perylene, coronene, and circumcoronene  

Energy Technology Data Exchange (ETDEWEB)

The geometries and energies of the title compounds are reported at the STO-3G and 6-31G* SCF levels, except for circumcoronene, where only the STO-3G level was employed. Group equivalents and homodesmic reactions are used to obtain heats of formation from ab initio energies. At the 6-31G* SCF level, the {Delta}H{sub f}{degrees} values for the first three compounds are similar, ranging from 66.3 to 72.2 kcal/mol. Evidence of a small additional aromatic stability for coronene is found. The ab initio enthalpy changes for homodesmic reactions containing similar structural parameters are shown to be proportional to the natural logarithm of a quantity we term the Kekule ratio: the product of reactant and product Kekule numbers, each raised to a power equal to its stoichiometric coefficient. 26 refs., 1 fig., 5 tabs.

Disch, R.L.; Schulman, J.M.; Peck, R.C. [City Univ. of New York, Flushing, NY (United States)

1992-05-14

67

76 FR 9049 - Notice of Intent To Repatriate Cultural Items: University of Pennsylvania Museum of Archaeology...  

Science.gov (United States)

...with blue, red, and black pigment. Opercula shell...individual, Augustus Bean (Ke.t- xut'.tc...greenish-blue, red, and black pigment. A wooden piece...individual, Augustus Bean (Ke.t-xut'.tc...greenish-blue, red, and black pigment, and...

2011-02-16

68

25 CFR 166.901 - How will the BIA select an agriculture intern?  

Science.gov (United States)

...post-secondary school; (2) Maintain good academic standing; (3) Enter into an obligated...approved organization during any break in attendance at school of more than three weeks...committee will evaluate annually the performance of the agriculture intern program...

2010-04-01

69

25 CFR 103.4 - What kinds of loans will BIA guarantee or insure?  

Science.gov (United States)

...guarantee or insure? 103.4 Section 103.4 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR FINANCIAL... (a) The business must contribute to the economy of an Indian reservation or tribal service area...

2010-04-01

70

Effect of Food on the Pharmacokinetic Profile of Etamicastat (BIA 5-453)  

OpenAIRE

Background Etamicastat is a novel, potent, and reversible peripheral dopamine-?-hydroxylase inhibitor that has been administered orally at doses up to 600?mg once daily for 10 days to male healthy volunteers and appears to be well tolerated. Objective The aim of this study was to investigate the effect of food on the pharmacokinetics of etamicastat. Material and Methods A single-center, open-label, randomized, two-way crossover study in 12 healthy male subjects was performed. Subje...

Vaz-da-silva, Manuel; Nunes, Teresa; Rocha, Jose? F.; Falca?o, Ami?lcar; Almeida, Luis; Soares-da-silva, Patricio

2011-01-01

71

Variability in global and direct irradiation series generation: scope and limitations  

OpenAIRE

The synthetic generation of hourly global horizontal irradiation (GHI) series allows the estimation of solar radiation potential by allowing the filling of gaps in records of daily or hourly values. In addition, synthetic generation of GHI can provide an increase of the time resolution of measured (or estimated) GHI series. Unfortunately, since GHI synthetic generation schemes are based on the use of random numbers, they provide different global irradiation values in each generation. Conseque...

Ferna?ndez-peruchena, Carlos M.; Rami?rez, Lourdes; Blanco, Manuel; Bernardos, Ana

2010-01-01

72

Kích kháng l?u d?n ??i v?i b?nh vàng lùn trên lúa – tri?n v?ng trong vi?c s?n xu?t lúa theo h??ng sinh thái  

OpenAIRE

Most rice protection methods have currently used toxic chemicals to control pathogens and pests, which leads to environmental pollution. Systemic acquired resistance (SAR) taking advantage of natural defence reaction of plants could be proposed as an alternative, ecologically friendly approach for plant protection. Its application into rice production could minimize the chemicals quantity used and could contribute to the decrease of environmental pollution and the development of sustainable a...

Le, Thanh Toan; Luong, Dien; Ngo, Thi Thuy Nhien; Pham, Kim

2012-01-01

73

S?n xu?t cao s?n enzyme phân h?y tinh b?t s?ng b?i ch?ng ??t bi?n và môi tr??ng t?i ?u  

OpenAIRE

Selected fungal strain for production of raw-starch-digesting enzyme by solid state fermentation was improved by sequential exposures to ?-irradiation of Co60, ultraviolet and treatments with Nmethyl-N'-nitrosoguanidine. Mutant Aspergillus sp. CXN2-3A was chosen and its production of raw-starch-digesting enzyme (RSDE) was improved 2 folds higher than that of wild type. Optimal condition for the production of the enzyme using wheat bran as the substrate was accomplished for the CXN2-3A. With ...

Vu, Hanh; Keun, Kim

2013-01-01

74

76 FR 26759 - Rate Adjustments for Indian Irrigation Projects  

Science.gov (United States)

...The BIA's methodology for setting the...Response: The methodology used by the BIA...maintained by the Project are also reviewed...The BIA's management of UDOs complies...maintenance and management of Project wells and...

2011-05-09

75

25 CFR 179.5 - What documents will BIA use to record termination of a life estate?  

Science.gov (United States)

...record termination of a life estate? The Agency...relinquishment of the interest or death certificate with the...following: (a) The life estate holder's relinquishment...or (b) Notice of death of a person who is the measuring life for the life...

2010-04-01

76

Enhancing the Efficiency of SnS Solar Cells bia Band-Offset Engineering with a Zinc Oxysulfide Buffer Layer  

OpenAIRE

SnS is a promising earth-abundant material for photovoltaic applications. Heterojuction solar cells were made by vapor deposition of p-type tin(II) sulfide, SnS, and n-type zinc oxysulfide, Zn(O,S), using a device structure of soda-lime glass/Mo/SnS/Zn(O,S)/ZnO/ITO. A record efficiency was achieved for SnS-based thin-film solar cells by varying the oxygen-to-sulfur ratio in Zn(O,S). Increasing the sulfur content in Zn(O,S) raises the conduction band offset between Zn(O,S) and SnS to an opti...

Sinsermsuksakul, Prasert; Hartman, Katy; Kim, Sang Bok; Sun, Leizhi; Park, Helen Hejin; Chakraborty, Rupak; Buonassisi, Tonio; Gordon, Roy Gerald

2013-01-01

77

Variability of the soil seed banks in the natural deciduous forest in the Bia?owie?a National Park  

OpenAIRE

Using the germination method, the species diversity, density of the soil seed bank and its relation to cover vegetation in a natural deciduous forest with primary and secondary tree stand were compared. It was found that the mean density and species composition of the soil seed bank in the forest with secondary tree stand that has spontaneously been overgrown over the last 90 years after clear-cutting does not differ from the soil seed bank derived from primeval forest (3167M-2 vs. 3827m-2). ...

Ma?gorzata Jankowska-B?aszczuk

1998-01-01

78

Variability of the soil seed banks in the natural deciduous forest in the Bia?owie?a National Park  

Directory of Open Access Journals (Sweden)

Full Text Available Using the germination method, the species diversity, density of the soil seed bank and its relation to cover vegetation in a natural deciduous forest with primary and secondary tree stand were compared. It was found that the mean density and species composition of the soil seed bank in the forest with secondary tree stand that has spontaneously been overgrown over the last 90 years after clear-cutting does not differ from the soil seed bank derived from primeval forest (3167M-2 vs. 3827m-2. In both stands there were 46 species altogether and 36 were common and seed banks were dominated by herbs. The most abundant in this group were: Urtica dioica, Chrysosplenium alternifolium, Geranium robertianum, Oxalis acetosella. In both cases it was found that the species structure of the herb layer was similar to that of the seed bank in about 70%. The seed banks of species absent from the herb layer or present there only sporadically were much more abundant. The seedlings of these species constituted more than one third of all seedlings that emerged in the samples from the secondary tree stand and only 5% those from the primary one. The analysis of seed bank in heavily rooted places under primary and secondary tree stands showed that in places with a totally distroyed herb layer the density of the soil seed bank in primeval forest was three times lower than in places with fully developed herb layer structure (102.60±22.61 vs. 307.0±206.5 per sample. This difference under secondary tree stand turned out to be much lower (415.8±137.8 vs. 358.2±126.0 per sample.

Ma?gorzata Jankowska-B?aszczuk

1998-12-01

79

Joanna Maj, Zdzis?aw Wo?niak, Rafa? Bia?ynicki-Birula, Alina Jankowska-Konsur  

Directory of Open Access Journals (Sweden)

Full Text Available Wprowadzenie: Ziarniniak grzybiasty (mycosis fungoides, MF jest najcz??ciej spotykanym pierwotnie skórnym ch?oniakiem T-komórkowym. We wczesnych stadiach charakteryzuje si? powolnym przebiegiem i obrazem klinicznym mog?cym przypomina? inne jednostki chorobowe. Przy?uszczyca plackowata wielkoogniskowa (parapsoriasis en grandes plaques, PP nale??ca do skórnych rozrostów limfoproliferacyjnych T-komórkowych mo?e by? jednostk? chorobow? trudn? do ró?nicowania z wczesnymi postaciami MF. Cel pracy: Celem pracy by?a ocena ekspresji markerów proliferacji w populacjach komórek limfoidalnych wykwitów skórnych w przebiegu PP i MF. Materia? i metody: W badaniu wykorzystano bioptaty skórne pobrane od 11 chorych ze zdiagnozowan? PP, 23 chorych z wczesn? postaci? MF (stadium IA-IIA oraz 22 pacjentów z zaawansowan? postaci? MF (IIB-IV. W badaniach immunohistochemicznych okre?lono poziom proliferacji komórkowej ocenia¬j?c ekspresj? Ki-67 i AgNORs. Analiz? statystyczn? przeprowadzono przy u?yciu testu t-Studenta. Wyniki: Nie stwierdzono statystycznie istotnych ró?nic (p>0,005 poziomu proliferacji komórkowej mierzonej obydwoma metodami mi?dzy grup? pacjentów z PP a grup? chorych z wczesn? postaci? MF. Wykazano natomiast statystycznie znacz?ce ró?nice dotycz?ce poziomu proliferacji komórkowej mi?dzy grup? z zaawansowanym MF a grup? z wczesn? postaci? MF i grup? z PP (p<0,005 w badaniach przeprowadzonych przy u?yciu obu markerów - Ki-67 i AgNORs. Wnioski: Badane czynniki Ki-67 i AgNORs s? u?ytecznymi markerami okre?laj?cymi rokowanie i stopie? zaawansowania MF. ?aden z nich nie umo?liwia ró?nicowania PP z wczesn? postaci? MF.

Joanna Maj

2008-12-01

80

25 CFR 171.510 - How does BIA calculate my annual operation and maintenance assessment if supplemental water is...  

Science.gov (United States)

...and maintenance assessment if supplemental water is available on the irrigation facility...DEPARTMENT OF THE INTERIOR LAND AND WATER IRRIGATION OPERATION AND MAINTENANCE...and maintenance assessment if supplemental water is available on the irrigation...

2010-04-01

81

25 CFR 161.715 - What will BIA do if a trespasser fails to pay penalties, damages and costs?  

Science.gov (United States)

...if a trespasser fails to pay penalties, damages and costs? 161.715 Section 161...GRAZING PERMITS Trespass Penalties, Damages, and Costs § 161.715 What will...if a trespasser fails to pay penalties, damages and costs? This section applies...

2010-04-01

82

25 CFR Appendix A to Subpart G - List of Activities Eligible for Funding Under BIA Transportation Facility Maintenance Program  

Science.gov (United States)

...Transportation Facility Maintenance Management System (TFMMS). 16. Performing pavement maintenance such as pot hole patching, crack sealing, chip sealing, surface rejuvenation, and thin overlays (less than 1 inch). 17....

2010-04-01

83

???????? ??????????????? ????????????? ????????????? ? ??????? ??????? ??????? ???????-????-????????????? ? ????????? ? ???????????? ????????????????  

Directory of Open Access Journals (Sweden)

Full Text Available ???????? ????????? ??????????????? ????????????? ????????????? (??? ?????? ????? ???????? ???? ? ????????????? ??????????? ? ????????? ?????????? ???????? ? ????????? ??????????? ?????? ????????????? ? ?????????? ?????. ????? ?????? ?????? ???? ??????????? ???????? ????????? ??? ? ??????? ??????? ??????? ???????-????-????????????? (??-?? ? ????????? ? ???????????? ????????????????. ?????????? ???????? ??????????? ?????????? ??????????????, ??????? ??????????????? ???????? – ???????????????????? (????, ??????? ??????????, ????????? ?? ???????? ???????? ? ????????? ?????? ??????????? ??? ? ??????? ? ???????????? ???????????? ??????????.??? ?????????? ???????????? ???????????????? ? ????? ????? ??? ??????????? ????????? ????-??????????????????? ?????????????? ? ?????? ??????????? ????????? ????? (SIM, ?????????? 6 ??????????????? ????????????? ????? ???????????? ????? ????????. ?????????? ?????? ???? ??? ???????????? ???????? ???? ???????? 100 ???, ??? ??????????? ??? ???????? ??????? ? ????????. ?????????? ??????? ???????? ? ?????????? ???????? ???, ????????? ???????? ?????????? ??????? ?? 6 (??? ????? ?????? ??? ?? 24 ?????. ??????????? ???? ??????? ????? ?????????? 24 ????, ??????? ???????????? ?????????? ?????? ???? ??? ? ????????? ???????? ?????????????? ?????? ? ????????? ?? ??? ????????? ?????????? ?????????? ???????????? ???????.????????? ????????????? ???????? ? ??????? ?????? ?????? ???????? ??????????? ???? ??? ? ????????? ????????, ????? ?????[ghi]???????? ? ??????[1,2,3-cd]??????, ??????? ?? ???? ?????????? ? 50% ???????? ???????. ???????????? ? ??????????? ?????????? ????????? ??? ? ?????????????? ???????? ? ???? ????????? ??????????? ?? 2,9 ?? 40 ???.????????????? ???????? ??????????? ??????????? ??????????? ?? ????????? ? ?????????? ???????? ?? 1 ??????, ? ????? ?? ?????????????. ???????? ????? ???? ????????????? ??? ????????? ? ??????????? ??? ? ??????????? ??????? ?????????? ???????, ? ????? ??? ?????????? ??????? ????????????.??? ?????????? ???????????? ???????????????? ? ????? ????? ??? ??????????? ????????? ????-??????????????????? ?????????????? ? ?????? ??????????? ????????? ????? (SIM, ?????????? 6 ??????????????? ????????????? ????? ????????????

Nassiba Baimatova

2014-06-01

84

The realised and potential soil seed bank in the Potentillo albae-Quercetum community in the Bia?owie?a Primeval Forest  

Directory of Open Access Journals (Sweden)

Full Text Available Seedling emergence from soil seed bank was studied during 3 growing seasons 1997-1999 in: 1 60 plots in 3 parts of the Potentillo albae-Quercetum patch: A - with Carpinus betulus (hornbeam present only in the herb layer (canopy cover ca. 50-60%, B - after tree felling, at present with hornbeam dominating the shrub layer (cover > 90%, C - invaded by hornbeam 30-40 years ago (cover ca. 90%, and in 2 60 soil samples from objects A, B, C kept in an unheated glasshouse. The results suggest that the seed bank realised in natural conditions is poorer in species with high light requirements (the Ellenberg indicator values for light (L ? 6 and their seedlings in comparison with the potential seed bank estimated in glasshouse conditions (field: A- 24; B - 17; C- 7, glasshouse : 44; 38; 32 species / 2 m2, field: 321; 108; 14, glasshouse: 785; 1205; 177 seedlings / m2, respectively. Contrarily, more species and seedlings with moderate light demand (L = 3-5 appeared in the field plots (field: A- 26; B- 25, glasshouse: 20; 14 species / 2 m2, field: 1014; 310, glasshouse: 328; 71 seedlings / m2. The shading by hornbeam negatively influences the size of the seed bank (field: A - 1743; B - 1226; C - 680, glasshouse: 1547; 3274; 459 seedlings / m2 and its species richness (field: A- 55; B - 48; C - 19, glasshouse: 76; 59; 56 taxa / 2 m2. Nomenclature: syntaxa - Matuszkiewicz (1981, taxa - Mirek et al. (1995.

Dorota Panufnik-M?drzycka

2001-06-01

85

25 CFR 115.605 - What information will the BIA include in its notice of the decision to restrict your IIM account?  

Science.gov (United States)

...notice of the decision to restrict your IIM account? 115.605 Section 115.605 Indians...FUNDS FOR TRIBES AND INDIVIDUAL INDIANS IIM Accounts: Hearing Process for Restricting an IIM Account § 115.605 What information will...

2010-04-01

86

25 CFR 900.101 - Is excess BIA or IHS real property to which an Indian tribe or tribal organization has taken...  

Science.gov (United States)

...Indian tribe or tribal organization has taken title eligible...facilities operation and maintenance funding from the Secretary...Indian tribe or tribal organization has taken title eligible...facilities operation and maintenance funding from the...

2010-04-01

87

78 FR 34039 - Magnuson-Stevens Act Provisions; General Provisions for Domestic Fisheries; Application for...  

Science.gov (United States)

...maturity, fecundity, BIA, food habits, and genetic research. The winter flounder...maturity, fecundity, BIA, food habits, and genetic research. Cod to be retained...applicant may request minor modifications and extensions to the...

2013-06-06

88

75 FR 8671 - Magnuson-Stevens Act Provisions; General Provisions for Domestic Fisheries; Application for...  

Science.gov (United States)

...maturity, fecundity, BIA, food habits, and genetic research. The summer flounder...maturity, fecundity, BIA, food habits, and genetic research. The winter flounder...requests to NMFS for minor modifications and extensions to the...

2010-02-25

89

77 FR 20790 - Magnuson-Stevens Act Provisions; General Provisions for Domestic Fisheries; Application for...  

Science.gov (United States)

...maturity, fecundity, BIA, food habits, and genetic research. The summer flounder...maturity, fecundity, BIA, food habits, and genetic research. The winter flounder...applicant may request minor modifications and extensions to the...

2012-04-06

90

76 FR 16614 - Magnuson-Stevens Act Provisions; General Provisions for Domestic Fisheries; Application for...  

Science.gov (United States)

...maturity, fecundity, BIA, food habits, and genetic research. The summer flounder...maturity, fecundity, BIA, food habits, and genetic research. The winter flounder...applicant may request minor modifications and extensions to the...

2011-03-24

91

25 CFR 1000.241 - Does this subpart create an agency relationship?  

Science.gov (United States)

... Does this subpart create an agency relationship? 1000.241 Section 1000.241... Does this subpart create an agency relationship? No, a BIA or non-BIA construction...does not automatically create an agency relationship. However, Federal law,...

2010-04-01

92

25 CFR 170.456 - When can a tribe request an exception from the design standards?  

Science.gov (United States)

...within their IRR Stewardship Plan with FHWA, they may approve or decline the request; otherwise BIA forwards the request to FHWA. The engineer of record must submit...based on engineering analysis. (a) FHWA or BIA may grant exceptions for:...

2010-04-01

93

Bureau of Indian Affairs Schools: New Facilities Management Information System Promising, but Improved Data Accuracy Needed.  

Science.gov (United States)

A General Accounting Office (GAO) study evaluated the Bureau of Indian Affairs' (BIA) new facilities management information system (FMIS). Specifically, the study examined whether the new FMIS addresses the old system's weaknesses and meets BIA's management needs, whether BIA has finished validating the accuracy of data transferred from the old…

General Accounting Office, Washington, DC.

94

Advancing integrative “one-health” approaches to global health through multidisciplinary, faculty-led global health field courses  

Directory of Open Access Journals (Sweden)

Funding: The GHI is supported through a combination of university, grants, and philanthropic funding; these field courses do not have specific, separate funding. Students self-fund participation in the courses.

Prof. C Olsen, DVM

2015-03-01

95

A comparison of fat mass and skeletal muscle mass estimation in male ultra-endurance athletes using bioelectrical impedance analysis and different anthropometric methods / Comparación de la masa grasa y muscular estimada en atletas varones de ultra-resistencia utilizando la bioimpedancia eléctrica y diferentes métodos antropométricos  

Scientific Electronic Library Online (English)

Full Text Available Se reclutaron a 257 hombres caucasianos que eran atletas de alto rendimiento, antes de competir en diferentes pruebas triatlón de natación, ciclismo y carrera. Se estimaron la masa grasa y la masa de músculo esquelético utilizando un análisis de impedancia bioeléctrica (BIA) y métodos antropométrico [...] s con el fin de investigar si el uso de BIA o de la antropometría sería útil en tales condiciones de campo. La grasa corporal total estimada por BIA fue significativamente mayor en comparación con la antropometría (P Abstract in english Two hundred and fifty seven male Caucasian ultraendurance athletes were recruited, pre-race, before different swimming, cycling, running and triathlon races. Fat mass and skeletal muscle mass were estimated using bioelectrical impedance analysis (BIA) and anthropometric methods in order to investiga [...] te whether the use of BIA or anthropometry would be useful under field conditions. Total body fat estimated using BIA was significantly high (P

B., Knechtle; A., Wirth; P., Knechtle; T., Rosemann; C. A., Rüst; R., Bescós.

1420-14-01

96

Obesity and Its Diagnostic Methods in Turkish Children  

OpenAIRE

Objective: The application of body mass index (BMI) for obesity classification in all population studies has been questioned by the scientific community. It has been found that the bioelectrical impedance analysis (BIA) is an accurate method for screening obesity. This study was conducted to evaluate the accuracies of BMI, skinfold thickness (SFT), leptin and BIA measurements in obesity classification and to find correlations between BIA and the other indicators for obesity. Materials and Met...

Dilek Yilmaz; Gulten Inan; Sacide Karakas; Aslihan Buyukozturk-Karul; Ferah Sonmez

2012-01-01

97

Comparison of fluid volume estimates in chronic hemodialysis patients by bioimpedance, direct isotopic, and dilution methods.  

Science.gov (United States)

Bioimpedance analysis (BIA) is accepted for the assessment of total-body water (TBW), intracellular fluid (ICF) and extracellular fluid (ECF). We aimed to compare precision and accuracy of single and multi-frequency-BIA to direct estimation methods (DEMs) of TBW, ECF, and ICF in hemodialysis patients. Linear regression analysis of volume estimates in 49 patients by single- and multi-frequency-BIA correlated significantly with DEMs. Bland-Altman analysis (BAA) found systemic bias for ECF single-frequency-BIA vs. ECF-DEMs. No other systematic biases were found. Proportional errors were found by BAA of ICF and ECF assessments with single- and multi-frequency bioimpedance spectroscopy compared to the DEMs. Comparisons of indirect methods (IEMs) to DEMs showed no significant differences and proportional errors. Root mean-squared-error analysis suggested slightly better accuracy and precision of ICF single-frequency-BIA vs. DEMs over ICF multi-frequency-BIA and IEMs to DEMs, and slightly better performance for ECF multi-frequency-BIA over both respective other methods. Compared to DEMs, there is slightly better accuracy for ECF multi- over single-frequency-BIA and ICF single- over multi-frequency-BIA. However the margin of differences between direct and indirect methods suggests that none of the analyzed methods served as a true "gold standard", because indirect methods are almost equally precise compared to DEMs. PMID:24067432

Raimann, Jochen G; Zhu, Fansan; Wang, Jack; Thijssen, Stephan; Kuhlmann, Martin K; Kotanko, Peter; Levin, Nathan W; Kaysen, George A

2014-04-01

98

Bioelectrical impedance analysis-part II: utilization in clinical practice.  

Science.gov (United States)

BIA is easy, non-invasive, relatively inexpensive and can be performed in almost any subject because it is portable. Part II of these ESPEN guidelines reports results for fat-free mass (FFM), body fat (BF), body cell mass (BCM), total body water (TBW), extracellular water (ECW) and intracellular water (ICW) from various studies in healthy and ill subjects. The data suggests that BIA works well in healthy subjects and in patients with stable water and electrolytes balance with a validated BIA equation that is appropriate with regard to age, sex and race. Clinical use of BIA in subjects at extremes of BMI ranges or with abnormal hydration cannot be recommended for routine assessment of patients until further validation has proven for BIA algorithm to be accurate in such conditions. Multi-frequency- and segmental-BIA may have advantages over single-frequency BIA in these conditions, but further validation is necessary. Longitudinal follow-up of body composition by BIA is possible in subjects with BMI 16-34 kg/m(2) without abnormal hydration, but must be interpreted with caution. Further validation of BIA is necessary to understand the mechanisms for the changes observed in acute illness, altered fat/lean mass ratios, extreme heights and body shape abnormalities. PMID:15556267

Kyle, Ursula G; Bosaeus, Ingvar; De Lorenzo, Antonio D; Deurenberg, Paul; Elia, Marinos; Manuel Gómez, José; Lilienthal Heitmann, Berit; Kent-Smith, Luisa; Melchior, Jean-Claude; Pirlich, Matthias; Scharfetter, Hermann; M W J Schols, Annemie; Pichard, Claude

2004-12-01

99

The accuracy of hand-to-hand bioelectrical impedance analysis in predicting body composition in college-age female athletes.  

Science.gov (United States)

The purpose of this investigation was to determine the accuracy of hand-to-hand bioelectrical impedance analysis (BIA) for estimating body composition in college-age female athletes using dual-energy X-ray absorptiometry (DEXA) as the criterion measure. Forty National Association for Intercollegiate Athletics college female athletes volunteered to participate in this study. For each participant, total body fat percentage (BF%) and fat-free mass (FFM) were obtained via BIA and DEXA. The mean BF% and FFM values obtained by BIA were compared with the criterion DEXA measure. The DEXA strongly correlated to the BIA for BF% (r = 0.74, R2 = 0.55, SEE = 3.60, and p < 0.01) and FFM (r = 0.84, R2 = 0.71, SEE = 2.45, p < 0.01). However, when compared with the DEXA, the mean values for BIA were significantly lower for BF% (DEXA = 27.6 ± 5.3%, BIA = 22.5 ± 3.5%, p < 0.01) and higher for FFM (DEXA = 47.2 ± 4.5 kg, BIA = 50.6 ± 4.6 kg, p < 0.01). The results of this investigation indicate that hand-to-hand BIA significantly underestimates BF% and overestimated FFM in college-age female athletes when compared with the criterion DEXA. Practitioners should use caution when analyzing body composition with hand-held BIA in a population of athletic women. PMID:20647951

Esco, Michael R; Olson, Michele S; Williford, Henry N; Lizana, Suheil N; Russell, Angela R

2011-04-01

100

IN VITRO DRUG RESISTANCE IN CHILDHOOD MATURE B-CELL ACUTE LYMPHOBLASTIC LEUKEMIA  

OpenAIRE

Pomimo znacznej liczby publikacji po?wi?conych oporno?ci in vitro na cytostatyki u dzieci z ostrymi bia?aczkami, brakuje jakichkolwiek danych o komórkach ostrej bia?aczki limfoblastycznej z dojrza?ych limfocytów B. Jest to najrzadsza posta? ostrej bia?aczki limfoblastycznej u dzieci i obejmuje ok. 1-2% wszystkich rozpozna?. Bia?aczk? t? jest leczy si? wed?ug odr?bnych protoko?ów, wspólnych dla B-ALL i B-NHL. C e l e m p r a c y by?a analiza oporno?ci in vitro na cytostat...

Wis?niewska, Magdalena; Styczyn?ski, Jan; Czyz?ewski, Krzysztof; Pogorza?a, Monika; Kubicka, Ma?gorzata; Ko?odziej, Beata; Kury?o-rafin?ska, Beata; Wysocki, Mariusz

2014-01-01

101

Estimation of confidence intervals of global horizontal irradiance obtained from a weather prediction model  

Science.gov (United States)

Many photovoltaic (PV) systems have been installed in Japan after the introduction of the Feed-in-Tariff. For an energy management of electric power systems included many PV systems, the forecast of the PV power production are useful technology. Recently numerical weather predictions have been applied to forecast the PV power production while the forecasted values invariably have forecast errors for each modeling system. So, we must use the forecast data considering its error. In this study, we attempted to estimate confidence intervals for hourly forecasts of global horizontal irradiance (GHI) values obtained from a mesoscale model (MSM) de-veloped by the Japan Meteorological Agency. In the recent study, we found that the forecasted values of the GHI of the MSM have two systematical forecast errors; the first is that forecast values of the GHI are depended on the clearness indices, which are defined as the GHI values divided by the extraterrestrial solar irradiance. The second is that forecast errors have the seasonal variations; the overestimation of the GHI forecasts is found in winter while the underestimation of those is found in summer. The information of the errors of the hourly GHI forecasts, that is, confidence intervals of the forecasts, is of great significance for planning the energy management included a lot of PV systems by an electric company. On the PV systems, confidence intervals of the GHI forecasts are required for a pinpoint area or for a relatively large area control-ling the power system. For the relatively large area, a spatial-smoothing method of the GHI values is performed for both the observations and forecasts. The spatial-smoothing method caused the decline of confidence intervals of the hourly GHI forecasts on an extreme event of the GHI forecast (a case of large forecast error) over the relatively large area of the Tokyo electric company (approximately 68 % than for a pinpoint forecast). For more credible estimation of the confidence intervals, it is required to consider the location of the installed PV systems or its capacity over the region.

Ohtake, Hideaki; Gari da Silva Fonseca, Joao, Jr.; Takashima, Takumi; Oozeki, Takashi; Yamada, Yoshinori

2014-05-01

102

A Comparison Between Heliosat-2 and Artificial Neural Network Methods for Global Horizontal Irradiance Retrievals over Desert Environments  

Science.gov (United States)

Global horizontal irradiance (GHI) retrievals at the surface of any given location could be used for preliminary solar resource assessments. More accurately, the direct normal irradiance (DNI) and diffuse horizontal irradiance (DHI) are also required to estimate the global tilt irradiance, mainly used for fixed flat plate collectors. Two different satellite-based models for solar irradiance retrievals have been applied over the desert environment of the United Arab Emirates (UAE). Both models employ channels of the SEVIRI instrument, onboard the geostationary satellite Meteosat Second Generation, as their main inputs. The satellite images used in this study have a temporal resolution of 15-min and a spatial resolution of 3-km. The objective of this study is to compare between the GHI retrieved using the Heliosat-2 method and an artificial neural network (ANN) ensemble method over the UAE. The high-resolution visible channel of SEVIRI is used in the Heliosat-2 method to derive the cloud index. The cloud index is then used to compute the cloud transmission, while the cloud-free GHI is computed from the Linke turbidity factor. The product of the cloud transmission and the cloud-free GHI denotes the estimated GHI. A constant underestimation is observed in the estimated GHI over the dataset available in the UAE. Therefore, the cloud-free DHI equation in the model was recalibrated to fix the bias. After recalibration, results over the UAE show a root mean square error (RMSE) value of 10.1% and a mean bias error (MBE) of -0.5%. As for the ANN approach, six thermal channels of SEVIRI were used to estimate the DHI and the total optical depth of the atmosphere (?). An ensemble approach is employed to obtain a better generalizability of the results, as opposed to using one single weak network. The DNI is then computed from the estimated ? using the Beer-Bouguer-Lambert law. The GHI is computed from the DNI and DHI estimates. The RMSE for the estimated GHI obtained over an independent dataset over the UAE is 7.2% and the MBE is +1.9%. The results obtained by the two methods have shown that both the recalibrated Heliosat-2 and the ANN ensemble methods estimate the GHI at a 15-min resolution with high accuracy. The advantage of the ANN ensemble approach is that it derives the GHI from accurate DNI and DHI estimates. The DNI and DHI estimates are valuable when computing the global tilt irradiance. Also, accurate DNI estimates are beneficial for preliminary site selection for concentrating solar powered plants.

Ghedira, H.; Eissa, Y.

2012-12-01

103

A practical guide to bioelectrical impedance analysis using the example of chronic obstructive pulmonary disease  

Directory of Open Access Journals (Sweden)

Full Text Available Abstract Bioelectrical impedance analysis (BIA is a simple, inexpensive, quick and non-invasive technique for measuring body composition. The clinical benefit of BIA can be further enhanced by combining it with bioelectrical impedance vector analysis (BIVA. However, there is a substantial lack of information on the practical aspects of BIA/BIVA for those primarily interested in learning how to use and interpret this method in practice. The purpose of this article is to provide some guidance on the use of BIA/BIVA with special attention to practical considerations. This report reflects the authors' practical experience with the use of single-frequency BIA in combination with BIVA, particularly in COPD patients. First, the method and principles of BIA/BIVA are briefly described. Then, a practice-oriented approach to the interpretation and analysis of characteristic examples of altered nutritional and fluid status as seen with BIA/BIVA in COPD patients (e.g. malnutrition in obese and underweight patients with COPD, water retention is presented. As our examples show BIA/BIVA is an attractive and easy-to-learn tool for quick nutritional assessment and is therefore of great clinical benefit in daily practice.

Mattiucci-Guehlke Muriel

2011-04-01

104

25 CFR 170.427 - How may an IRRTIP be amended?  

Science.gov (United States)

...170.427 How may an IRRTIP be amended? (a) A tribe may amend the IRRTIP by changing its TTIP on or before July 15 and submitting the changed TTIP to BIA for inclusion in the IRRTIP. BIA's regional office will review all submitted...

2010-04-01

105

25 CFR 170.423 - How are projects placed on the IRRTIP?  

Science.gov (United States)

... (a) BIA selects projects from the TTIP or tribal priority list for inclusion on...project from the tribal priority list or TTIP; (2) BIA includes this project...authority to the consortium to develop the TTIP and tribal control schedule;...

2010-04-01

106

Assessment of appendicular skeletal muscle mass by bioimpedance in older community-dwelling Korean adults.  

Science.gov (United States)

It is crucial to investigate age-related body composition changes in geriatric medicine. Bioelectrical impedance analysis (BIA) is easy to perform, non-invasive, relatively inexpensive, and portable. However, the accuracy of measurement by BIA is questionable. To develop and cross-validate the predictive equation for estimated appendicular skeletal muscle mass (ASM) using BIA in older community-dwelling Korean adults, we include two cohorts: study participants aged 65-80 years in the Ansung cohort for the Korean Health and Genome Study (men, n=285; women, n=435) used as equation-generating group, and Korean Longitudinal Study of Health Aging (KLoSHA) as cross-validation group (men, n=202; women, n=208). Dual energy X-ray absorptiometry (DXA) and BIA were performed in both cohorts. Using multiple linear regression analysis, we drew a predictive equation for DXA-measured ASM by BIA resistance. From DXA and BIA measurements in the Ansung cohort, we generated the estimated equation ASM (kg)=[(Ht(2)/R×0.104)+(age×-0.050)+(gender×2.954)+(weight×0.055)]+5.663 where Ht is height in centimeters; R is BIA resistance in 250?; for gender, men=1 and women=0; and age is in years. We validated this equation in the KLoSHA. The r(2) of the estimated ASM was 0.890. This BIA equation provides valid estimates of ASM in older Korean adults. PMID:24309033

Kim, Jung Hee; Choi, Sung Hee; Lim, Soo; Kim, Ki Woong; Lim, Jae Young; Cho, Nam H; Park, Kyong Soo; Jang, Hak Chul

2014-01-01

107

76 FR 43986 - Endangered and Threatened Species; Take of Anadromous Fish  

Science.gov (United States)

...Affairs (BIA) on behalf of the Nez Perce Tribe (NPT). The Idaho Department of Fish...application from the BIA on behalf of the NPT for an ESA section 10(a)(1...propagation (hatchery) program at the Nez Perce Tribal Hatchery and associated...

2011-07-22

108

76 FR 80403 - Agency Information Collection Activities; Proposed collection; Comments Request: Alien's Change...  

Science.gov (United States)

...Proposed collection; Comments Request: Alien's Change of Address Form: 33/BIA Board...2) Title of the Form/Collection: Alien's Change of Address Forms 33/BIA Board...administrative action or of any decisions in an alien's case. (5) An estimate of the...

2011-12-23

109

76 FR 64377 - Agency Information Collection Activities: Proposed Collection; Comments Requested: Alien's Change...  

Science.gov (United States)

...Proposed Collection; Comments Requested: Alien's Change of Address Forms: 33/BIA...2) Title of the Form/Collection: Alien's Change of Address Forms: 33/BIA...administrative action or of any decisions in an alien's case. (5) An estimate of the...

2011-10-18

110

Exogenous recombinant human growth hormone effects during suboptimal energy and zinc intake  

Directory of Open Access Journals (Sweden)

Full Text Available Abstract Background Energy and Zinc (Zn deficiencies have been associated with nutritional related growth retardation as well as growth hormone (GH resistance. In this study, the relationship between suboptimal energy and/or Zn intake and growth in rats and their response to immunoreactive exogenous recombinant human GH (GHi, was determined. Results Rats treated with GHi and fed ad-libitum energy and Zn (100/100 had increased IGFBP-3 (p Conclusion These results suggest that GHi enhances weight gain in rats with suboptimal energy and Zn intake but does not modify energy expenditure or physical activity index. Suboptimal Zn intake did not exacerbate the reduced growth or decrease in energy expenditure observed with energy restriction.

Duro Debora

2005-04-01

111

Sub-Hour Solar Data for Power System Modeling From Static Spatial Variability Analysis: Preprint  

Energy Technology Data Exchange (ETDEWEB)

High penetration renewable integration studies need high quality solar power data with spatial-temporal correlations that are representative of a real system. This paper will summarize the research relating sequential point-source sub-hour global horizontal irradiance (GHI) values to static, spatially distributed GHI values. This research led to the development of an algorithm for generating coherent sub-hour datasets that span distances ranging from 10 km to 4,000 km. The algorithm, in brief, generates synthetic GHI values at an interval of one-minute, for a specific location, using SUNY/Clean Power Research, satellite-derived, hourly irradiance values for the nearest grid cell to that location and grid cells within 40 km.

Hummon, M.; Ibanez, E.; Brinkman, G.; Lew, D.

2012-12-01

112

Model for correcting global solar irradiance measured with rotating shadowband radiometer  

Science.gov (United States)

Global horizontal irradiance (GHI) measured with rotating shadowband radiometer (RSR) is not accurate enough due to thermal sensitivity and nonuniform spectral response of the photovoltaic detector equipped inside. The purpose of this work is to develop a multiple regressive model to correct the errors posed by the temperature and spectrum. The ratio of the reference global horizontal irradiance (RGHI) to the RSR measured GHI is defined as correction factor, based on which, the model is built via device temperature, air mass, and solar zenith angle. Evaluated from various statistical tests such as coefficient of correlation R2, mean bias deviation, root mean square deviation, t-statistic, skewness, and kurtosis, results show that the corrected RSR GHI can be comparable with the high-quality RGHI, which indicates the validity of the model.

Xing, Hongyan; Chong, Wei; Sha, Yizhuo; Lv, Wenhua

2012-04-01

113

Novel nonsense mutation (p.Y113X) in the human growth hormone receptor gene in a Brazilian patient with Laron syndrome / Nova mutação nonsense (p.Y113X) no gene do receptor do hormônio do crescimento em um paciente brasileiro com síndrome de Laron  

Scientific Electronic Library Online (English)

Full Text Available INTRODUÇÃO: Até o momento, aproximadamente 60 diferentes mutações envolvendo o gene do receptor do GH (GHR) foram descritas em pacientes com a síndrome de insensibilidade ao GH (GHI). Neste artigo, descrevemos uma nova mutação nonsense do GHR. MÉTODOS: O paciente foi avaliado aos 6 anos de idade par [...] a baixa estatura associada ao fenótipo clínico da GHI. Níveis de GH, IGF-1 e GHBP foram determinados. Os produtos de PCR dos éxons 2-10 foram seqüenciados. RESULTADOS: O paciente apresentou níveis elevados de GH (26 µg/L), baixos de IGF-1 (22.5 ng/ml) e indetectáveis de GHBP. O seqüenciamento do éxon 5 do GHR revelou uma duplicação da adenina no nucleotídeo 338 da sequência de codificação do GHR (c.338dupA) em homozigose. CONCLUSÃO: Descrevemos uma nova mutação que causa um GHR truncado e uma perda da função do receptor devido à perda de aminoácidos compreendendo as regiões transmembrana e intracelular do receptor, levando a GHI. Abstract in english BACKGROUND: To date, about sixty different mutations within GH receptor (GHR) gene have been described in patients with GH insensitivity syndrome (GHI). In this report, we described a novel nonsense mutation of GHR. METHODS: The patient was evaluated at the age of 6 yr, for short stature associated [...] to clinical phenotype of GHI. GH, IGF-1, and GHBP levels were determined. The PCR products from exons 2-10 were sequenced. RESULTS: The patient had high GH (26 µg/L), low IGF-1 (22.5 ng/ml) and undetectable GHBP levels. The sequencing of GHR exon 5 disclosed adenine duplication at nucleotide 338 of GHR coding sequence (c.338dupA) in homozygous state. CONCLUSION: We described a novel mutation that causes a truncated GHR and a loss of receptor function due to the lack of amino acids comprising the transmembrane and intracellular regions of GHR protein, leading to GHI.

Erik Trovão, Diniz; Alexander A. L., Jorge; Ivo J. P., Arnhold; Arlan L., Rosenbloom; Francisco, Bandeira.

1264-12-01

114

The use of bioelectrical impedance analysis for body composition in epidemiological studies  

DEFF Research Database (Denmark)

BACKGROUND/OBJECTIVES: Bioelectrical impedance analysis (BIA) is a relatively simple, inexpensive and non-invasive technique to measure body composition and is therefore suitable in field studies and larger surveys. SUBJECTS/METHODS: We performed an overview of BIA-derived body fat percentages (BF%) from 55 published studies of healthy populations aged 6-80 years. In addition, the relationship between body mass index (BMI) and body composition is documented in the context of BIA as a good alternative to closely differentiate which composition of the body better relates to the risk of cardiovascular diseases (CVDs)and all-cause mortality. RESULTS AND CONCLUSIONS: BIA-estimated percentage of BF varies greatly with population and age. BIA-estimated BF% is directly and closely related to various health outcomes such as CVDs, which is in contrast to BMI where both high and low BMIs are associated with increased risk of developing chronic diseases. Studies, among others using BIA, suggest that low BMI may reflectlow muscle and high BMI fat mass (FM). BIA-derived lean and FM is directly associated with morbidity and mortality. To the contrary, BMI is rather of limited use for measuring BF% in epidemiological studies.

Böhm, A; Heitmann, B L

2013-01-01

115

Bioelectrical impedance analysis--part I: review of principles and methods.  

Science.gov (United States)

The use of bioelectrical impedance analysis (BIA) is widespread both in healthy subjects and patients, but suffers from a lack of standardized method and quality control procedures. BIA allows the determination of the fat-free mass (FFM) and total body water (TBW) in subjects without significant fluid and electrolyte abnormalities, when using appropriate population, age or pathology-specific BIA equations and established procedures. Published BIA equations validated against a reference method in a sufficiently large number of subjects are presented and ranked according to the standard error of the estimate. The determination of changes in body cell mass (BCM), extra cellular (ECW) and intra cellular water (ICW) requires further research using a valid model that guarantees that ECW changes do not corrupt the ICW. The use of segmental-BIA, multifrequency BIA, or bioelectrical spectroscopy in altered hydration states also requires further research. ESPEN guidelines for the clinical use of BIA measurements are described in a paper to appear soon in Clinical Nutrition. PMID:15380917

Kyle, Ursula G; Bosaeus, Ingvar; De Lorenzo, Antonio D; Deurenberg, Paul; Elia, Marinos; Gómez, José Manuel; Heitmann, Berit Lilienthal; Kent-Smith, Luisa; Melchior, Jean-Claude; Pirlich, Matthias; Scharfetter, Hermann; Schols, Annemie M W J; Pichard, Claude

2004-10-01

116

Determination of acetylsalicylic acid in tablets with salicylate ion selective electrode in a Batch Injection Analysis system  

Directory of Open Access Journals (Sweden)

Full Text Available The feasibility of the use of a Batch Injection Analysis (BIA system for potentiometric determination of acetylsalicylic acid in tablets, with a membrane ion selective electrode, was investigated. There is no significant difference between the results obtained by the proposed method and those obtained by the Standard British Pharmacopaeia method12 at the 95% confidence level. Values of 4% and 2.5% for R.S.D. were obtained by the application of the BIA-potentiometric method and for the injections respectively. About 90 determinations per hour can be performed with the proposed BIA potentiometric method.

Fernandes Julio Cesar B.

1998-01-01

117

A Comparison Study of Portable Foot-to-Foot Bioelectrical Impedance Scale to Measure Body Fat Percentage in Asian Adults and Children  

OpenAIRE

Objective. To compare the measurements of body fat percentage (BF%) using the foot-to-foot bioelectrical impedance analysis (FTF-BIA) with the direct segmental multifrequency BIA (DSM-BIA). Methods. There were 36 men and 52 women (37.1 ± 14.3 years) with 57% Malays, 30% Chinese, and 13% Indian. For children, there were 45 boys and 26 girls (11.5 ± 2.5 years) with 52% Malay, 15% Chinese, and 33% Indian. Results. Mean height for men was 168.4?cm, 11?cm taller than women. Men were 10?kg ...

Pei Ying Sim; Tin Tin Su; Hazreen Abd Majid; Azmi Mohamed Nahar; Muhammad Yazid Jalaludin

2014-01-01

118

Validating an operational physical method to compute surface radiation from geostationary satellites  

Science.gov (United States)

Models to compute global horizontal irradiance (GHI) and direct normal irradiance (DNI) have been in development over the last three decades. These models can be classified as empirical or physical based on the approach. Empirical models relate ground-based observations with satellite measurements and use these relations to compute surface radiation. Physical models consider the physics behind the radiation received at the satellite and create retrievals to estimate surface radiation. While empirical methods have been traditionally used for computing surface radiation for the solar energy industry, the advent of faster computing has made operational physical models viable. The Global Solar Insolation Project (GSIP) is a physical model that computes DNI and GHI using the visible and infrared channel measurements from a weather satellite. GSIP uses a two-stage scheme that first retrieves cloud properties and uses those properties in a radiative transfer model to calculate GHI and DNI. Developed for polar orbiting satellites, GSIP has been adapted to NOAA's Geostationary Operation Environmental Satellite series and can run operationally at high spatial resolutions. This method holds the possibility of creating high quality datasets of GHI and DNI for use by the solar energy industry. We present an outline of the methodology and results from running the model as well as a validation study using ground-based instruments.

Sengupta, Manajit; Heidinger, Andrew; Miller, Steven

2010-08-01

119

25 CFR 166.207 - What provisions will be contained in a permit?  

Science.gov (United States)

...Conditions for making improvements, if any; (o) A right of entry by the BIA for purposes of inspection or enforcement...discharge of any hazardous material from the permitted premises that occur during the permit term, regardless of...

2010-04-01

120

78 FR 7448 - Final Environmental Impact Statement for the Proposed Spokane Tribe of Indians West Plains Casino...  

Science.gov (United States)

...Environmental Impact Statement for the Proposed Spokane Tribe of Indians West Plains Casino and Mixed Use Project...Indian Affairs (BIA) as lead agency, with the Spokane Tribe of Indians (Tribe), National Indian Gaming Commission (NIGC),...

2013-02-01

121

77 FR 53225 - Draft Environmental Impact Statement for the Proposed Seminole Tribe of Florida Fee-to-Trust...  

Science.gov (United States)

...Environmental Impact Statement for the Proposed Seminole Tribe of Florida Fee-to-Trust, City of Coconut Creek...Affairs (BIA) as lead agency, with the Seminole Tribe of Florida (Tribe), City of Coconut Creek (City), and Broward...

2012-08-31

122

78 FR 15035 - Extension, Without Changes of Agency Information Collection for Indian Self-Determination and...  

Science.gov (United States)

...basis. Both the BIA and IHS award contracts for multiple programs whereas...agencies to administer and evaluate contract programs. Tribal governments...information by submitting Public Law 93-638 contract proposals to the appropriate...

2013-03-08

123

25 CFR 67.5 - Notices.  

Science.gov (United States)

... PREPARATION OF A ROLL OF INDEPENDENT SEMINOLE INDIANS OF FLORIDA...5 Notices. (a) The Director shall give notice to all Area Directors of the BIA and all Superintendents...within the jurisdiction of the Director of the preparation...

2010-04-01

124

76 FR 33340 - Revision of Agency Information Collection for the Indian Child Welfare Assistance Annual Report...  

Science.gov (United States)

...the draft revised form from, Dr. Linda Ketcher, Office of Indian...Washington, DC 20240. FOR FURTHER INFORMATION CONTACT: Dr. Linda Ketcher (202) 513-7610. SUPPLEMENTARY INFORMATION: I. Abstract The BIA is...

2011-06-08

125

25 CFR Appendix B to Subpart B - Sources of Tribal Transportation Training and Education Opportunities  

Science.gov (United States)

...development 14. Indian Employment, Training, and Related...CTER—Council for Tribal Employment Rights 18. BIA Indian...STIPDG and NSTISS Student Internship Programs (Summer Transportation Internship Program for Diverse...

2010-04-01

126

77 FR 60041 - Heating, Cooling, and Lighting Standards for Bureau-Funded Dormitory Facilities  

Science.gov (United States)

...ID BIA-2012-0001] RIN 1076-AF10 Heating, Cooling, and Lighting Standards for...effective on May 24, 2012, addressing heating, cooling, and lighting standards for...handbook) dated March 30, 2007, respecting heating, ventilation, air conditioning,...

2012-10-02

127

78 FR 54669 - Draft Environmental Impact Statement for the Proposed RES Americas Moapa Solar Energy Center...  

Science.gov (United States)

...the Proposed RES Americas Moapa Solar Energy Center, Clark County, Nevada...the proposed RES Americas Moapa Solar Energy Center on the Moapa River Indian...action is the BIA approval of a solar energy ground lease and agreements...

2013-09-05

128

Body Composition Tests  

Science.gov (United States)

... IMPEDANCE ANALYSIS (BIA) BODY MASS INDEX (BMI) COMPUTERIZED TOMOGRAPHY (CT OR CAT SCAN) DUAL ENERGY X-RAY ABSORPTIOMETRY ( ... your BMI” at http://nhlbisupport.com/bmi/ Computerized tomography (CT or CAT scan) Tomography means looking at slices ...

129

75 FR 47621 - Final Environmental Impact Statement for the North Fork Rancheria's Proposed 305-Acre Trust...  

Science.gov (United States)

...BIA) as lead agency, with the North Fork Rancheria of Mono Indians (Tribe), California Department of Transportation (Caltrans), Madera Irrigation District, City of Madera, National Indian Gaming Commission (NIGC), and U.S. Environmental...

2010-08-06

130

76 FR 9789 - Office of Urban Indian Health Programs; Announcement Type: Limited Competition, Continuation...  

Science.gov (United States)

...Phoenix, etc. BIA Relocation offered job training and placement, and was viewed...with individual, couples, Traumatic Stress Beck Depression cognitive behavioral group, and family Disorder (PTSD) Inventory, coping therapy intervention...

2011-02-22

131

77 FR 26785 - Implementation of Indian Reservation Roads Program and Streamlining the Federal Delivery of...  

Science.gov (United States)

...INFORMATION: Federally recognized tribes are invited to attend consultation and informational sessions regarding: A joint BIA and FWHA recommendation for changing how the Proposed Roads and Access Roads will contribute to the calculation of the RNDF for IRR...

2012-05-07

132

Budget impact analysis.  

Science.gov (United States)

A budget impact analysis (BIA) is used to assess whether the adoption of a new health technology is affordable, given the resource and budget constraints of the context. Increasingly, BIAs are coming to be viewed as an important-if not essential-part of health technology assessment (HTA). BIA data is often examined in conjunction with cost-effectiveness analysis (CEA) data to help inform decisions makers when developing reimbursement policies within the resource constraints of their health care system. This article presents a review of existing BIA guidelines from around the world and makes some initial recommendations for the development of Thai BIA guidelines, as part of the newly-developed Economic Evaluation guidelines for Thailand. Initial recommendations include guidelines on appropriate analytic framework design, study design, perspective, scenarios for comparison, target population, costing and resource use, uncertainty analysis, and discounting. PMID:24964701

Leelahavarong, Pattara

2014-05-01

133

Distribution and ecology of Biatoridium monasteriense J. Lahm ex Körb in Poland  

Directory of Open Access Journals (Sweden)

Full Text Available A new site of Biatoridium monasteriense was discovered during a lichenological investigation in Bia?owie?a National Park. The paper presents information on the distribution of this species in Poland.

Anna ?ubek

2012-03-01

134

25 CFR 103.30 - What standard of care must a lender meet?  

Science.gov (United States)

...these standards, BIA may reduce or eliminate entirely the amount payable under its...then in descending order of importance: (1...kinds of insurance, in amounts reasonably necessary...and any guarantor or co-maker of the...

2010-04-01

135

25 CFR 46.10 - Eligible activities.  

Science.gov (United States)

...INTERIOR EDUCATION ADULT EDUCATION PROGRAM General Provisions...appropriated for the BIA's Adult Education Program may be used to support...2) Enable Indian adults to continue their education through the secondary...

2010-04-01

136

78 FR 4867 - Renewal of Agency Information Collection for Energy Resource Development Program Grants  

Science.gov (United States)

...the information collection to Catherine Freels, U.S. Department of the Interior...Tennessee 37929; email: Catherine.Freels@bia.gov. FOR FURTHER INFORMATION CONTACT: Catherine Freels, (865) 545-4315, extension...

2013-01-23

137

77 FR 45301 - Establishment of the Osage Negotiated Rulemaking Committee  

Science.gov (United States)

...rulemaking by attending Committee meetings, submitting...and speaking at Committee meetings during...Constitution and role of the BIA in managing...relevant to the nomination and appointment of members to the Committee. In any...

2012-07-31

138

Initiatives to Reduce Earthquake Risk of Developing Countries  

Science.gov (United States)

The seventeen-year-and-counting history of the Palo Alto-based nonprofit organization GeoHazards International (GHI) is the story of many initiatives within a larger initiative to increase the societal impact of geophysics and civil engineering. GHI's mission is to reduce death and suffering due to earthquakes and other natural hazards in the world's most vulnerable communities through preparedness, mitigation and advocacy. GHI works by raising awareness in these communities about their risk and about affordable methods to manage it, identifying and strengthening institutions in these communities to manage their risk, and advocating improvement in natural disaster management. Some of GHI's successful initiatives include: (1) creating an earthquake scenario for Quito, Ecuador that describes in lay terms the consequences for that city of a probable earthquake; (2) improving the curricula of Pakistani university courses about seismic retrofitting; (3) training employees of the Public Works Department of Delhi, India on assessing the seismic vulnerability of critical facilities such as a school, a hospital, a police headquarters, and city hall; (4) assessing the vulnerability of the Library of Tibetan Works and Archives in Dharamsala, India; (5) developing a seismic hazard reduction plan for a nonprofit organization in Kathmandu, Nepal that works to manage Nepal's seismic risk; and (6) assisting in the formulation of a resolution by the Council of the Organization for Economic Cooperation and Development (OECD) to promote school earthquake safety among OECD member countries. GHI's most important resource, in addition to its staff and Board of Trustees, is its members and volunteer advisors, who include some of the world's leading earth scientists, earthquake engineers, urban planners and architects, from the academic, public, private and nonprofit sectors. GHI is planning several exciting initiatives in the near future. One would oversee the design and construction of an earthquake- and tsunami-resistant structure in Sumatra to house a tsunami museum, a community training center, and offices of a local NGO that is preparing Padang for the next tsunami. This facility would be designed and built by a team of US and Indonesian academics, architects, engineers and students. Another initiative would launch a collaborative research program on school earthquake safety with the scientists and engineers from the US and the ten Islamic countries that comprise the Economic Cooperation Organization. Finally, GHI hopes to develop internet and satellite communication techniques that will allow earthquake risk managers in the US to interact with masons, government officials, engineers and architects in remote communities of vulnerable developing countries, closing the science and engineering divide.

Tucker, B. E.

2008-12-01

139

Estimativa da massa muscular esquelética em mulheres idosas: validade da impedância bioelétrica Validity of bioelectrical impedance analysis for the estimation of skeletal muscle mass in elderly women  

OpenAIRE

O presente estudo tem como objetivos: a) verificar a concordância entre os métodos da impedância bioelétrica (BIA) e da absortometria radiológica de dupla energia (DXA) para a estimativa da massa muscular esquelética (MME); e b) analisar o poder preditivo de variáveis antropométricas e da BIA para a predição da MME em idosas. Foram avaliadas 120 mulheres (60 a 81 anos), residentes na região Sul do Brasil. Mensuraram-se as variáveis antropométricas (massa corporal e estatura); a r...

Cassiano Ricardo Rech; Eline Salomons; Luiz Rodrigo Augustemak de Lima; Edio Luiz Petroski; Maria Fátima Glaner

2010-01-01

140

Foot-to-foot bioelectrical impedance accurately tracks direction of adiposity change in overweight and obese 7- to 13-year-old children.  

Science.gov (United States)

Body composition measurements are valuable when evaluating pediatric obesity interventions. We hypothesized that foot-to-foot bioelectrical impedance analysis (BIA) will accurately track the direction of adiposity change, but not magnitude, in part due to differences in fat patterning. The purposes of this study were to examine the accuracy of body composition measurements of overweight and obese children over time using dual-energy x-ray absorptiometry (DXA) and BIA and to determine if BIA accuracy was affected by fat patterning. Eighty-nine overweight or obese children (48 girls, 41 boys, age 7-13 years) participating in a randomized controlled trial providing a family-centered, lifestyle intervention, underwent DXA and BIA measurements every 3 months. Bland-Altman plots showed a poor level of agreement between devices for baseline percent body fat (%BF; mean, 0.398%; +2SD, 8.685%; -2SD, -7.889%). There was overall agreement between DXA and BIA in the direction of change over time for %BF (difference between visits 3 and 1: DXA -0.8 ± 0.5%, BIA -0.7 ± 0.5%; P = 1.000) and fat mass (FM; difference between visits 3 and 1: DXA 0.7 ± 0.5 kg, BIA 0.6 ± 0.5 kg; P = 1.000). Bioelectrical impedance analysis measurements of %BF and FM at baseline were significantly different in those with android and gynoid fat (%BF: 35.9% ± 1.4%, 32.2% ± 1.4%, P obese children; inaccuracy in the magnitude of BIA measurements may be a result of fat patterning differences. PMID:25697463

Kasvis, Popi; Cohen, Tamara R; Loiselle, Sarah-Ève; Kim, Nicolas; Hazell, Tom J; Vanstone, Catherine A; Rodd, Celia; Plourde, Hugues; Weiler, Hope A

2015-03-01

141

Reliability of bioimpedance analysis compared with other adiposity measurements in children: the FLVS II Study  

OpenAIRE

OBJECTIVE: To evaluate the reproducibility of the measurement of% body fat by bipedal biometrical impedance analysis (BIA) compared with anthropometric measurements of adiposity in children and the correlations between these methods in children and adults.METHODS: A cross-sectional study in a total of 1080 adults and children enrolled in 1999 in the Fleurbaix-Laventie Ville Sant?I (FLVS II) population-based study in northern France. The reproducibility of anthropometrical and BIA methods was ...

Kettaneh, Adrien; Heude, Barbara; Lommez, Agne?s; Borys, Jean-michel; Ducimetie?re, Pierre; Charles, Marie-aline

2005-01-01

142

Reliability of bioimpedance analysis compared with other adiposity measurements in children: the FLVS II Study.  

OpenAIRE

OBJECTIVE: To evaluate the reproducibility of the measurement of% body fat by bipedal biometrical impedance analysis (BIA) compared with anthropometric measurements of adiposity in children and the correlations between these methods in children and adults.METHODS: A cross-sectional study in a total of 1080 adults and children enrolled in 1999 in the Fleurbaix-Laventie Ville Sant?I (FLVS II) population-based study in northern France. The reproducibility of anthropometrical and BIA methods was ...

Kettaneh, Adrien; Heude, Barbara; Lommez, Agne?s; Borys, Jean-michel; Ducimetie?re, Pierre; Charles, Marie-aline

2005-01-01

143

Comparação da gordura corporal de mulheres idosas segundo antropometria, bioimpedância e DEXA  

Scientific Electronic Library Online (English)

Full Text Available Verificar a concordância e comparar o percentual de gordura corporal (%GC) através das medidas de dobras cutâneas (DC), bioimpedância (BIA) e DEXA. Foram avaliadas vinte mulheres voluntárias (62 a 79 anos), utilizando-se duas equações distintas para DC (19, 20) e BIA (23) e avaliação por DEXA. As es [...] timativas do %GC foram comparadas através de análise de variância para medidas repetidas (ANOVA- Bonferroni), a correlação foi verificada pelo coef. de Pearson e a concordância pelo procedimento de Bland & Altman (25). O %GC obtido pela BIA apresentou baixa correlação (r0,05) entre os métodos e/ou equações de BIA(RJL-CompCorp) vs. DC-Jackson (19). Para todas as outras comparações, as diferenças foram significativas (p Abstract in english Comparison of body fat using anthropometry, bioelectrical impedance and DEXA in elderly women. Verify correspondence and compare percentage body fat (%BF) estimates by skinfold thickness (SKT), bioelectrical impedance analysis (BIA) and DEXA. Twenty voluntaries women (aged 62 - 79 yr) were assessed. [...] The body fat was estimated using two different equations of SKT(Jackson (19); Durning and Womersley, (20)), BIA using two-predictions formulas (23) and DEXA. To compare mean values of %BF was used analysis of variance for repeated measures (ANOVA _ Bonferroni), the correlation of the inter-method was verified by Pearson correlation coefficients (r), and correspondence between prediction formulas was tested by using the approach by Bland and Altman (25). The %BF assessed by BIA (23) shown poor correlation (r0,05) between methods and/or equations by BIA (RJL-CompCorp) vs. DC-Jackson (19). There were observed significant differences (p

Aline, Rodrigues Barbosa; José Maria, Santarém; Wilson Jacob, Filho; Eduardo, Souza Meirelles; Maria de Fátima, Nunes Marucci.

2001-03-01

144

Body Fat Equations and Electrical Bioimpedance Values in Prediction of Cardiovascular Risk Factors in Eutrophic and Overweight Adolescents  

OpenAIRE

The aim of this study was to analyze body fat anthropometric equations and electrical bioimpedance analysis (BIA) in the prediction of cardiovascular risk factors in eutrophic and overweight adolescents. 210 adolescents were divided into eutrophic group (G1) and overweight group (G2). The percentage of body fat (% BF) was estimated using 10 body fat anthropometric equations and 2 BIA. We measured lipid profiles, uric acid, insulin, fasting glucose, homeostasis model assessment-insulin resista...

Franciane Rocha Faria; Eliane Rodrigues Faria; Roberta Stofeles Cecon; Amp Xfa Nior, Djalma Ad Amp Xe O. Barbosa J.; Sylvia do Carmo Castro Franceschini; Maria do Carmo Gouveia Peluzio; Andréia Queiroz Ribeiro; Pedro Israel Cabral de Lira; Paulo Roberto Cecon; Silvia Eloiza Priore

2013-01-01

145

The Estimation of the Fat Free Mass Index in Athletes.  

Directory of Open Access Journals (Sweden)

Full Text Available Purpose: The purpose of this investigation was to compare a practical measurement of fat free mass index (FFMI from bioelectrical impedance analysis (BIA to the dual energy X-ray absorptiometry (DEXA value in collegiate athletes.Methods: Thirty-three male baseball players and 16 female gymnasts volunteered to participate in this study during their respective pre-season. Subjects visited the laboratory once and had their measurements taken in the following order: weight, height, DEXA, and Omron HBF-500.Results: The BIA device investigated was not a valid estimate of FFMI when compared to the DEXA. The TE was 0.93 kg/ m2 for males and 0.78 kg/ m2 for females. There were also significant mean differences between the BIA prediction and the DEXA value for males (BIA=20.6 kg/m2 vs. DEXA=21.1 kg/m2, P=0.007 and females (BIA=16.2 kg/m2 vs. DEXA=17.5 kg/m2, P=0.001.Conclusions: The BIA device investigated in this study did not provide a valid estimate of FFMI in male and female collegiate athletes. Although there was a general tendency for the BIA to underestimate FFMI compared to DEXA, 98% of the estimates were within plus or minus 2 kg/ m2. Therefore, while slightly biased, BIA may provide a reasonable (± 2 kg/ m2 estimate of nutritional status for practitioners who are unable able to afford more expensive equipment.

Thomas J. Pujol,

2012-09-01

146

Bioelectrical impedance and visceral fat: a comparison with computed tomography in adults and elderly; Bioimpedancia eletrica e gordura visceral: uma comparacao com a tomografia computadorizada em adultos e idosos  

Energy Technology Data Exchange (ETDEWEB)

Objective: To evaluate the association between electrical bioimpedance analysis (BIA) and visceral fat (VF) in adult and elderly patients. Subjects and methods: This was a cross-sectional study, with a sample of 191 subjects (52% women, 49% elderly) stratified by sex, age and body mass. Computerized tomography (VF area) and BIA (percentage of total body fat (%TBF-BIA), phase angle, reactance and resistance) data were generated. Statistical analysis was based on Pearson's Correlation Coefficient, Anova, Pearson's Chi-square, and ROC curves. Results: VF areas {>=} 130 cm{sup 2} were more prevalent among the elderly and among men. Adult females showed a stronger correlation between GV and %TBF-BIA. The other groups showed similar results and statistically significant correlations. Correlations between GV and phase angle were weak and not statistically significant. ROC Curves analyzes showed the following %TBF-BIA, which identified excess VF: for male subjects: 21.5% (adults) and 24.25% (elderly); for female subjects: 35.05% (adults) and 38.45% (elderly) with sensitivity of 78.6%, 82.1%, 83.3%, and 66.7%, and specificity of 70.6%, 62.5%, 79.1%, and 69%, respectively. Conclusion: BIA was found to have satisfactory sensitivity and specificity to predict VF; however, other devices and other techniques should be investigated to improve VF prediction. (author)

Eickemberg, Michaela [Universidade Federal da Bahia (UFBA), Salvador, BA (Brazil); Roriz, Anna Karla Carneiro [Universidade Federal da Bahia (UFBA), Salvador, BA (Brazil); Fontes, Gardenia Abreu Vieira [Universidade Federal da Bahia (UFBA), Salvador, BA (Brazil); Sampaio, Lilian Ramos [Universidade Federal de Sao Paulo (Unifesp), Sao Paulo, SP (Brazil)

2013-05-01

147

?ng d?ng công ngh? A/O k?t h?p màng vi l?c ?? x? lý n??c th?i sinh ho?t ? Hà N?i  

OpenAIRE

M?c tiêu c?a nghiên c?u là ?? xu?t ???c m?t công ngh? hi?u qu? và phù h?p ?? x? lý n??c th?i sinh h?at ? các ?ô th? c?a Vi?t nam, là lo?i n??c th?i ???c thu gom t? h? th?ng thoát n??c chung có n?ng ?? ch?t h?u c? th?p (COD 120-200 mg/l) nh?ng hàm l??ng ch?t dinh d??ng nh? Nit?, Ph?t pho khá cao (T-N: 10-40 mg/L). Chúng tôi ?ã nghiên c?u và v?n hành ch?y th? mô hình x? l?...

Tran, Thi Viet Nga; Tran, Hoai Son

2012-01-01

148

Quantitative digital morphometry reveals low expression of desmoglein 3 protein in basal cell carcinomas: relevance to pemphigus vulgaris pathogenesis' Zmniejszona ekspresja bia?ka desmogleiny 3, ujawniona ilo?ciow? morfometri? cyfrow?, w rakach podstawnokomórkowych a patogeneza p?cherzycy zwyk?ej.  

Directory of Open Access Journals (Sweden)

Full Text Available Introduction: Basal cell carcinoma (BCC is the most common type of skin cancer and its incidence appears to be increasing. Objective: Reasons to undertake the study of desmoglein 3 protein (DSG3 expression in BCC were twofold: (i DSG3-linked pemphigus vulgaris (PV, a life-threatening autoimmune blistering dermatosis, can coexist with malignancy, (ii hair follicles, which physiologically express DSG3, apparently are involved in both PV pathogenesis (mature follicular cells and BCC pathogenesis (stem cells of the bulge region of hair follicle. Material and methods: DSG3 expression was evaluated in BCC-affected areas in patients with BCC (22 specimens; BCC tumor, in non-BCC-affected epidermis in patients with BCC (21 specimens; control 1 and in more benign tumors than BCC (12 seborrheic keratosis specimens and 10 keratosis senilis specimens; control 2. The immunohistochemical staining on frozen sections was performed using monoclonal murine anti-DSG3 antibody. The digital microscopic image analysis with quantitative morphometric software was then used to measure the intensity of positive immunostaining signals of the DSG3 in the area of interest (tumor-affected, tumor-free. Results: There was significantly lower expression of DSG3 in BCC tumor compared to both control 1 and control 2. There was no significant difference of DSG3 expression in control 1 and control 2. Conclusions: Thus, it seems that DSG3 might have some role in BCC pathogenesis as its decreased expression in BCC-affected epidermis might reflect just locally invasive behavior of that tumor. Apparently, factors independent from DSG3 are capable to keep BCC cells in clusters, but are incapable to do the same as far as keratinocytes in PV are concerned.

Marian Dmochowski

2009-12-01

149

Efficiency of resource use in small-scale white shrimp (Penaeus vannamei production in Lamongan Regency, East Java Province, Indonesia Wydajno?? wykorzystania zasobów w produkcji bia?ej krewetki (Penaeus vannamei na ma?? skal? w regencji Lamongan, prowincji Wschodnia Jawa w Indonezji  

Directory of Open Access Journals (Sweden)

Full Text Available This study carried out to determine the efficiency of recourses used in white shrimp (Pe-naeus Vannamei production in Lamongan Regency, East Java Province, Indonesia. The simple random sampling technique used to select 125 small-scale white shrimp farmers from six-study areas in Lamongan Regency. The white shrimp production function was es-timated using Ordinary Least Square (OLS technique. The results indicated that Double Log production function had the best fit in explaining the relationship between output of white shrimp and inputs used. The coefficient of determination (R2 = 0.846 indicated that the eighty-four point six percent of variation in output of white shrimp was explained by the independent variables in the model. Findings showed that labor, fertilizer, feed and stocking density are significant determinants of production inputs. Moreover, the estimates of the ra-tio of the value of marginal product (VMP to marginal factor cost (MFC revealed that the non-optimal combination of inputs among the white shrimp farmers, it showed that the aq-uaculture farms resources were inefficiently utilized for labor, feed and stocking density by 1.94, 1.93 and 171.4 respectively, while fertilizer showed otherwise by 0.11 or over uti-lized.

Riski A. Lestariadi

2012-12-01

150

A comparison of fat mass and skeletal muscle mass estimation in male ultra-endurance athletes using bioelectrical impedance analysis and different anthropometric methods Comparación de la masa grasa y muscular estimada en atletas varones de ultra-resistencia utilizando la bioimpedancia eléctrica y diferentes métodos antropométricos  

Directory of Open Access Journals (Sweden)

Full Text Available Two hundred and fifty seven male Caucasian ultraendurance athletes were recruited, pre-race, before different swimming, cycling, running and triathlon races. Fat mass and skeletal muscle mass were estimated using bioelectrical impedance analysis (BIA and anthropometric methods in order to investigate whether the use of BIA or anthropometry would be useful under field conditions. Total body fat estimated using BIA was significantly high (P Se reclutaron a 257 hombres caucasianos que eran atletas de alto rendimiento, antes de competir en diferentes pruebas triatlón de natación, ciclismo y carrera. Se estimaron la masa grasa y la masa de músculo esquelético utilizando un análisis de impedancia bioeléctrica (BIA y métodos antropométricos con el fin de investigar si el uso de BIA o de la antropometría sería útil en tales condiciones de campo. La grasa corporal total estimada por BIA fue significativamente mayor en comparación con la antropometría (P < 0,001. Cuando se compararon los resultados entre BIA y antropometría, se encontraron niveles de concordancia bajos a moderados. Estos resultados concuerdan con las diferencias halladas con el análisis Bland-Altman, lo que indica que la ecuación antropométrica de Ball et al. posee el mayor grado de concordancia (desviación = -3,0 ± 5,8 kg con BIA, con Stewart et al. (desviación = -6,4 ± 6,3 kg, Faulkner (desviación = -4,7 ± 5,8 kg y Wilmore-Siri (desviación = -4,8 ± 6,2 kg. La estimación de la masa de músculo esquelético fue significativamente superior con BIAS que con antropometría (P < 0,001. Los resultados de la ICC y del método Bland-Altman muestran que la ecuación antropométrica de Lee et al. (desviación = -5,4 ± 5,3 kg produjo el mayor grado de concordancia. El método combinado de Janssen et al. entre antropometría y BIA mostró el menor grado de concordancia (desviación = -12,5 ± 5,7 kg. Hubo una diferencia estadísticamente significativa entre los resultados derivados de la ecuación de Lee et al. y de la de Janssen et al. (P < 0,001. En resumen, la determinación de la composición corporal en atletas de alto rendimiento utilizando BIA produjo valores significativamente mayores de masa grasa y músculo esquelético en comparación con las ecuaciones antropométricas.

B. Knechtle

2011-12-01

151

Utilização da impedância bioelétrica para estimativa da massa muscular esquelética em homens idosos / Use of bioelectrical impedance for the estimation of skeletal muscle mass in elderly men  

Scientific Electronic Library Online (English)

Full Text Available SciELO Venezuela | Language: Portuguese Abstract in portuguese O presente estudo tem como objetivos: a) verificar a concordância entre os métodos da impedância bioelétrica (BIA) e da absortometria radiológica de dupla energia (DEXA), para a estimativa da massa muscular esquelética (MME); b) analisar o poder preditivo das variáveis antropométricas e de BIA para [...] predição da MME em idosos. Foram avaliados 60 homens idosos (61 a 80 anos), residentes na região Sul do Brasil. Mensuraram-se as variáveis antropométricas (massa corporal e estatura), as variáveis de resistência e hidratação dos tecidos livres de gordura foram medidas pela técnica da BIA tetrapolar (Biodinamics - BF-310), realizou-se também um scan de corpo inteiro através da DEXA (LUNAR PRODIGY DF + 14319 Radiation e software 7.52.002 DPX-L). A diferença entre os métodos foi verificada pelo teste “t”, análise dos resíduos e o coeficiente de correlação. O valor preditivo das variáveis antropométricas e de BIA foi verificado pela regressão Linear Múltipla. Observou-se que a BIA superestimou em média 0,6 kg (dp= 1,59) a MME, quando comparada com a DEXA, contudo não houve diferença estatística (p Abstract in english The aim of the present study was twofold: a) to determine the agreement between bioelectrical impedance analysis (BIA) and dual energy X-ray absorptiometry (DEXA) for the estimation of skeletal muscle mass (SMM), and b) to analyze the predictive power of anthropometric variables and BIA for the pred [...] iction of SMM in the elderly. Sixty elderly men (61 to 80 years) from the southern region of Brazil were studied. Anthropometric variables (body weight and height) were measured, the resistance and hydration of fat-free tissues variables were determined by tetrapolar BIA (BF-310, Biodynamics). A whole body DEXA scan was also performed (Lunar Prodigy DF + 14319 Radiation and 7.52.002 DPX-L software). Differences between methods were analyzed using the t-test, analysis of residues and correlation coefficient. The predictive value of the anthropometric variables and BIA was evaluated by multiple linear regression. BIA overestimated SMM on average by 0.60 kg (sd=1.59) when compared to DEXA, however, no statistical difference was observed (p>0.05). There was a strong correlation between methods (r=0.90; p

Luiz Rodrigo, Augustemak de Lima; Cassiano Ricardo, Rech; Edio Luiz, Petroski.

2008-12-01

152

Composición corporal en niños preescolares: comparación entre métodos antropométricos simples, bioimpedancia y absorciometría de doble haz de rayos X / Body composition by simple anthropometry, bioimpedance and DXA in preschool children: interrelationships among methods  

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish Abstract in spanish Objetivo. Comparar la composición corporal estimada por dos métodos antropométricos simples y por impedanciometría (BIA, por sus siglas en inglés) y absorciometría de doble haz de rayos X (DXA, por sus siglas en inglés) y estudiar las correlaciones existentes entre ellos, en una población preescolar [...] de Argentina. Población, material y métodos. Se estudió transversalmente una población clínicamente sana, de edad comprendida entre 4 y 6 años, de 230 niños (118 varones y 112 niñas), que concurrían a Jardines Integrales de La Matanza, Argentina. Se determinó el índice de masa corporal (IMC), la circunferencia de cintura (Cci) y el contenido de grasa corporal, expresado como porcentaje, por BIA (Maltron BF- 900) y por DXA (densitómetro Lunar DPX-L, software pediátrico). Resultados. En IMC y Cci no se observaron diferencias estadísticamente significativas entre ambos sexos, pero sí en el porcentaje de grasa corporal por BIA o DXA. La correlación entre BIA y ambos métodos antropométricos fue moderada (r de Pearson= 0,43-0,53), al igual que entre DXA y Cci (r= 0,66), mientras que las demás correlaciones fueron fuertes (r= 0,71-0,83). Las medidas obtenidas por BIA y DXA no concordaron (prueba de Bland Altman); sin embargo, las diferencias se distribuyeron en forma homogénea a lo largo del eje horizontal e independientemente de las medias. BIA reprodujo valores más bajos de porcentaje de grasa corporal que DXA (p Abstract in english Objective. To examine the interrelationships of body composition variables derived from simple anthropometry, bioelectrical impedance (BIA) and dualenergy X-ray absorptiometry (DXA). Population, material and methods. A total of 230 healthy preschool children (118 males and 112 females) age 4-6 years [...] , attending a day care center, were examined to determine body mass index (BMI) and waist circumference (WC). Percentage of body fat content (%BF) was predicted by BIA (Maltron BF- 900) and DXA (Lunar DPX-L, pediatric software). Results. BMI and WC did not show significant differences among sex, while %BF by BIA or DXA did. BIA measures were lower than DXA´s (p

Patricia N, Rodríguez; Enrique F, Bermúdez; Gabriela S, Rodríguez; María A, Spina; Susana N, Zeni; Silvia M, Friedman; Ramón A, Exeni.

2008-04-01

153

Etamicastat, a new dopamine-ß-hydroxylase inhibitor, pharmacodynamics and metabolism in rat.  

Science.gov (United States)

Despite the importance of sympathetic nervous system in pathophysiological mechanisms of cardiac heart failure and essential hypertension, therapy specifically targeting the sympathetic nervous system is currently underutilized. Etamicastat is a novel dopamine-ß-hydroxylase (DBH) inhibitor that is oxidized into BIA 5-965 and deaminated followed by oxidation to BIA 5-998, which represents 13% of total etamicastat and quantified metabolites. However, the primary metabolic pathway of etamicastat in rats was found to be the N-acetylation (BIA 5-961), which represents 44% of total etamicastat and quantified metabolites. Trace amounts of BIA 5-961 de-sulfated and S-glucuronide were also detected. All the main metabolites of etamicastat inhibited DBH with IC50 values of 306 (228, 409), 629 (534, 741), 427 (350, 522) nM for BIA 5-965, BIA 5-998 and BIA 5-961, respectively. However, only etamicastat (IC50 of 107 (94; 121) nM) was able to reduce catecholamine levels in sympathetic nervous system innervated peripheral tissues, without effect upon brain catecholamines. Quantitative whole body autoradiography revealed a limited transfer of etamicastat related radioactivity to brain tissues and the mean recovery of radioactivity was ~90% of the administered radioactive dose, eliminated primarily via renal excretion over 5 days. The absolute oral bioavailability of etamicastat was 64% of the administered dose. In conclusion, etamicastat is a peripheral selective DBH inhibitor mainly N-acetylated in the aminoethyl moiety and excreted in urine. Etamicastat main metabolites inhibit DBH, but only etamicastat demonstrated unequivocal pharmacological effects as a DBH inhibitor with impact upon the activity of the sympathetic nervous system under in vivo conditions. PMID:25058908

Loureiro, Ana I; Bonifácio, Maria João; Fernandes-Lopes, Carlos; Igreja, Bruno; Wright, Lyndon C; Soares-da-Silva, Patrício

2014-10-01

154

Estimation of Body Composition Depends on Applied Device in Patients Undergoing Major Abdominal Surgery.  

Science.gov (United States)

Background: Bioelectrical impedance analysis (BIA) is a method used to estimate body compartments such as fat-free mass (FFM) and fat mass (FM). Two BIA devices, a single-frequency BIA (SF-BIA) device and a bioimpedance spectroscopy (BIS) approach, were compared to evaluate their reliability and to study whether their estimations resulted in similar classifications of body composition. Materials and Methods: In a prospective observational study, body composition was estimated by SF-BIA and BIS in 123 adult patients scheduled for major abdominal surgery. Measurement agreement for the continuous variables FFM and FM were analyzed by using the intraclass correlation coefficient (ICC), the mean differences, and their limits of agreement. Measurement differences were also visualized by Bland-Altman plots. For the dichotomized FFM index (FFMI) and FM index (FMI), interobserver agreement was calculated using Cohen ? statistics; the McNemar test was performed to compare the paired proportions. Results: Agreement for the continuous variables was almost perfect for FM (.86; 95% confidence interval [CI], .80-.90) and substantial for FFM (.78; 95% CI, .70-.84). For the dichotomous variables, the agreement was substantial for FMI (.67; 95% CI, .51-.83) and slight for FFMI (.19; 95% CI, .01-.37). BIS classified a larger proportion having a low FFMI and a high FMI. Conclusion: There were good ICCs between SF-BIA and BIS for FFM and FM. However, the mean differences were substantial, whereas the classification of body composition based on FFMI and FMI was influenced by the device. Therefore, BIA devices are not interchangeable. PMID:25107953

Haverkort, Elizabeth B; Binnekade, Jan M; de van der Schueren, Marian A E; Gouma, Dirk J; de Haan, Rob J

2014-08-01

155

Seasonal and geographical variation of Linke turbidity factor and its effect on global horizontal irradiance estimation: UAE case study  

Science.gov (United States)

In a clear-sky condition, solar radiation travelling through the Earth's atmosphere encounters atmospheric attenuation caused by several factors. Scattering of solar radiation is mainly caused by air molecules, water vapor, water droplets and dust. On the other hand, the absorption of solar radiation is usually related to the presence of O3, water vapor and CO2 layers in the upper atmosphere. Linke turbidity factor (TL) is commonly used to model the attenuation of solar radiation in the atmosphere. TL is the key parameter used in the Heliosat model, which is developed to estimate the global horizontal irradiance (GHI) at the surface of the earth. TL is calculated by the following equation: T_L=?/?_R where ? is the optical thickness of the whole atmosphere, and ?R is the optical thickness of the Rayleigh atmosphere, i.e. the clear and dry atmosphere. The problem with TL is its dependence on the air mass (m). Therefore, TL is normalized to an air mass of 2 in order to reduce the daily variance. In this study, the monthly TL(m=2) is computed over 7 ground-based stations available in the UAE (figure 1). Spatial and temporal analysis was performed to assess the seasonal and the geographical distribution of TL over the UAE. The computed TL(m=2) values are then applied in the Heliosat model to compare between the measured and modeled GHI values. The model treats the atmospheric and cloud transmittances separately. First, clear-sky direct normal irradiance (DNI) and diffused horizontal irradiance (DHI) values are computed using TL(m=2), solar zenith angle, air mass, sun-earth distance correction, solar constant and the Rayleigh optical depth, from that the clear-sky GHI is determined. Next, the cloud index is derived from the HRV channel available from the SEVIRI instrument, and from that the cloud transmission is computed. The product of the cloud transmission and the clear-sky GHI produces the modeled GHI. The comparison between TL calculated over the seven stations show higher turbidity for the 4 inland stations (stations 4-7) in the summer compared to coastal and near-coastal stations (stations 1-3). This difference could be explained by the high dust generation in desert areas surrounding inland stations, in summer dry and hot weather. A preliminary comparison has been performed between the modeled and the measured GHI values over four inland stations (stations 4-7). The obtained results show RMSE and r2 values ranging between 16.7-18% and 0.95-0.96, respectively.

Eissa, Y. A.; Ghedira, H.

2011-12-01

156

Estimativa da gordura corporal através de equipamentos de bioimpedância, dobras cutâneas e pesagem hidrostática / Comparison of body fat estimation by bioelectric impedance, skinfold thickness, and underwater weighing  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese A estimativa do percentual de gordura (%G) pela bioimpedância (BIA) tem como vantagem a simplicidade da medida. Contudo, a confiabilidade da BIA tem sofrido críticas. O objetivo deste estudo foi comparar a estimativa do %G através das técnicas de bioimpedância (RJL-101; Byodinamics A-310, Maltron BF [...] -900 e BF-906), de dobras cutâneas (DC) e da pesagem hidrostática (PH). Observaram-se 25 indivíduos, homogeneizados segundo raça (branca), gênero (masculino) e idade (18 a 36 anos). Para a medida de BIA foi utilizada a padronização proposta por Lukaski et al. (1985, 1986). Para as DC foram utilizadas as equações de å 3 DC e å 7 DC (Jackson, Pollock, 1978). Os valores de %G e de volume residual para PH foram preditos, respectivamente, pelas equações de Siri (1961) e Goldman e Becklake (1959). A análise estatística compreendeu: a) comparação entre os métodos através da ANOVA com medidas repetidas seguida de testes post-hoc de Tukey; b) correlação de Pearson (r); e c) cálculo do erro padrão de estimativa (SEE) das técnicas em relação à PH. Os resultados indicaram que: a) as medidas de BIA não diferiram significativamente, entre si, para o %G estimado; b) As medidas dos aparelhos A-310 e BF-906 não coincidiram com a PH (p Abstract in english The main advantage of the bioelectric impedance method (BIA) in the determination of body fat (%BF) is the simplicity of the procedure. However, its accuracy and reliability have been criticized. The purpose of this study was to compare the %BF obtained by BIA (RJL-101; Biodynamics A-310, Maltron BF [...] -900 e BF-906), by skinfold thickness (ST), and by underwater weighing (UW). Twenty-five subjects, divided in homogenous groups according to age (18 to 36 years), sex (men), and race (white) participated in the study. BIA measures were taken using the Lukaski et al. standardization (1985,1986). ST was taken by using the equation of 3 and 7 skinfolds (Jackson, Pollock, 1978). The values of %BF and residual volume for the UW were estimated by the Siri (1961) and Goldman and Becklake (1959) equations. Statistical analysis was calculated by: a) repeated measures ANOVA followed by the Tukey post-hoc test; b) Pearson (r) correlation; c) standard error of estimate (SEE) of the BIA and ST compared to UW. The results indicated that: a) there were no significant differences for %BF measures obtained by the BIA devices; b) the %BF obtained by the A-310 and BF-906 devices did not match with the UW measures (p

Maurício Nunes, Rodrigues; Sidney Cavalcante da, Silva; Walace David, Monteiro; Paulo de Tarso Veras, Farinatti.

2001-08-01

157

Estimativa da massa muscular esquelética em mulheres idosas: validade da impedância bioelétrica / Validity of bioelectrical impedance analysis for the estimation of skeletal muscle mass in elderly women  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese O presente estudo tem como objetivos: a) verificar a concordância entre os métodos da impedância bioelétrica (BIA) e da absortometria radiológica de dupla energia (DXA) para a estimativa da massa muscular esquelética (MME); e b) analisar o poder preditivo de variáveis antropométricas e da BIA para a [...] predição da MME em idosas. Foram avaliadas 120 mulheres (60 a 81 anos), residentes na região Sul do Brasil. Mensuraram-se as variáveis antropométricas (massa corporal e estatura); a resistência e hidratação dos tecidos livres de gordura foram medidas pela técnica da BIA tetrapolar (Biodinamics - BF-310), e pela DXA de corpo inteiro (Lunar Prodigy DF + 14319 Radiation e software 7.52.002 DPX-L). A diferença entre os métodos foi verificada pelo teste t pareado, análise dos resíduos e o coeficiente de correlação. O valor preditivo das variáveis antropométricas e de BIA foi verificado pela regressão linear múltipla, adotando nível de significância de p 0,01). Observou-se que a BIA subestimou em média 0,8kg (IC95%: -3,7; 2,0kg) a MME, quando comparada com a DXA. Foi observada alta correlação entre os métodos (r² = 0,75; p Abstract in english The objectives of the present study were: a) to determine the agreement between bioelectrical impedance analysis (BIA) and dual-energy X-ray absorptiometry (DXA) for the estimation of skeletal muscle mass (SMM), and b) to analyze the predictive power of anthropometric variables and BIA for the predi [...] ction of SMM in elderly women. A total of 120 women (60 to 81 years), living in the southern region of Brazil, were studied. Anthropometric variables (body weight and height) were measured. Resistance and hydration of fat-free tissues were measured by tetrapolar BIA (Biodynamics, BF-310) and by whole-body DXA (Lunar Prodigy DF + 14319 Radiation and DPX-L software, version 7.52.002). Differences between methods were determined using the paired t-test, analysis of residuals and correlation coefficient. The predictive value of the anthropometric variables and BIA was evaluated by multiple linear regression, adopting a level of significance of p

Cassiano Ricardo, Rech; Eline, Salomons; Luiz Rodrigo Augustemak de, Lima; Edio Luiz, Petroski; Maria Fátima, Glaner.

2010-04-01

158

Implementing the global health security agenda: lessons from global health and security programs.  

Science.gov (United States)

The Global Health Security Agenda (GHSA) describes a vision for a world that is safe and secure from infectious disease threats; it underscores the importance of developing the international capacity to prevent, detect, and respond to pandemic agents. In February 2014, the United States committed to support the GHSA by expanding and intensifying ongoing efforts across the US government. Implementing these goals will require interagency coordination and harmonization of diverse health security elements. Lessons learned from the Global Health Initiative (GHI), the President's Emergency Program for AIDS Relief (PEPFAR), and the Cooperative Threat Reduction (CTR) program underscore that centralized political, technical, and fiscal authority will be key to developing robust, sustainable, and integrated global health security efforts across the US government. In this article, we review the strengths and challenges of GHI, PEPFAR, and CTR and develop recommendations for implementing a unified US global health security program. PMID:25812424

Paranjape, Suman M; Franz, David R

2015-01-01

159

Surface clear-sky shortwave radiative closure intercomparisons in the Weather Research and Forecasting model  

Science.gov (United States)

The ability of the Rapid Radiative Transfer Model for GCMs (RRTMG) and Goddard shortwave (SW) radiative schemes to reproduce global (GHI), direct (DNI), and diffuse (DIF) fluxes at the surface in clear-sky conditions is examined within the Weather Research and Forecasting (WRF) modeling framework. The models were forced using measurements of precipitable water and aerosol optical properties from five AERONET sites and were evaluated against high-quality observations of GHI, DNI, and DIF at four nearby or coincident sites of the SURFRAD network and one at the Atmospheric Radiation Measurement Central Facility in the contiguous US. In addition, the performance has been intercompared against the Dudhia broadband SW parameterization together with a regressive model to calculate DNI and DIF and the top-class SMARTS2 SW spectral model. The role of aerosols has been investigated by running the models with and without aerosols. All of them have shown outstanding skill at predicting GHI within the range of the expected observational error, regardless of whether aerosol information is provided as input. When aerosol information is not provided, DNI and DIF are affected by strong biases. In contrast, providing observed aerosols as input solves the bias issue for DNI and nearly does for DIF using the RRTMG scheme. The RRTMG has also proven to have high potential skill for long-term assessment of clear-sky GHI, DNI, and DIF irradiance, as long as reliable aerosol inputs are provided. Considering its simplicity, the Dudhia scheme has also shown a remarkable ability for solar resource assessment in clear-sky conditions.

Ruiz-Arias, José A.; Dudhia, Jimy; Santos-Alamillos, Francisco J.; Pozo-Vázquez, David

2013-09-01

160

Analysis and Prediction of Energy Production in Concentrating Photovoltaic (CPV) Installations  

OpenAIRE

A method for the prediction of Energy Production (EP) in Concentrating Photovoltaic (CPV) installations is examined in this study. It presents a new method that predicts EP by using Global Horizontal Irradiation (GHI) and the Photovoltaic Geographical Information System (PVGIS) database, instead of Direct Normal Irradiation (DNI) data, which are rarely recorded at most locations. EP at four Spanish CPV installations is analyzed: two are based on silicon solar cells and the other two on multi-...

Allen Barnett; Xiaoting Wang; Go?mez-gil, Francisco J.

2012-01-01

161

Surface Radiation from GOES: A Physical Approach; Preprint  

Energy Technology Data Exchange (ETDEWEB)

Models to compute Global Horizontal Irradiance (GHI) and Direct Normal Irradiance (DNI) have been in development over the last 3 decades. These models can be classified as empirical or physical, based on the approach. Empirical models relate ground based observations with satellite measurements and use these relations to compute surface radiation. Physical models consider the radiation received from the earth at the satellite and create retrievals to estimate surface radiation. While empirical methods have been traditionally used for computing surface radiation for the solar energy industry the advent of faster computing has made operational physical models viable. The Global Solar Insolation Project (GSIP) is an operational physical model from NOAA that computes GHI using the visible and infrared channel measurements from the GOES satellites. GSIP uses a two-stage scheme that first retrieves cloud properties and uses those properties in a radiative transfer model to calculate surface radiation. NREL, University of Wisconsin and NOAA have recently collaborated to adapt GSIP to create a 4 km GHI and DNI product every 30 minutes. This paper presents an outline of the methodology and a comprehensive validation using high quality ground based solar data from the National Oceanic and Atmospheric Administration (NOAA) Surface Radiation (SURFRAD) (http://www.srrb.noaa.gov/surfrad/sitepage.html) and Integrated Surface Insolation Study (ISIS) http://www.srrb.noaa.gov/isis/isissites.html), the Solar Radiation Research Laboratory (SRRL) at National Renewable Energy Laboratory (NREL), and Sun Spot One (SS1) stations.

Habte, A.; Sengupta, M.; Wilcox, S.

2012-09-01

162

CPV Energy Production Analysis  

Science.gov (United States)

This work describes a simple method that predicts the CPV energy production (EP) by using Global Horizontal Irradiation (GHI) data from weather stations and the PVGIS database. To establish and examine this prediction model, we analyze data from four CPV installations of different radiation conditions in Spain. The EP prediction involves two steps. First, since Direct Normal Irradiation (DNI) is not widely measured, it is estimated based on real-time GHI and PVGIS data over an average year. Second, the EP is extrapolated as a linear function of the estimated DNI. This is based on the fact that the real EP data from these CPV installations shows very good linearity with respect to the estimated DNI. Moreover, this characteristic does not change when moving from a low radiation location to a high radiation one. Thus, our proposed model uses GHI data from nearby weather stations and the PVGIS database and predicts the performance of CPV installations at any location. Our prediction closely matches the real EP. For the installations we have studied, the difference between the predicted and the real annual EP is less than 2% and the average difference between the predicted and the real monthly EP is in the range of 5-16%.

Gómez-Gil, Francisco J.; Wang, Xiaoting; Barnett, Allen

2011-12-01

163

Modeling the Cumulative Effects of Social Exposures on Health: Moving beyond Disease-Specific Models  

Directory of Open Access Journals (Sweden)

Full Text Available The traditional explanatory models used in epidemiology are “disease specific”, identifying risk factors for specific health conditions. Yet social exposures lead to a generalized, cumulative health impact which may not be specific to one illness. Disease-specific models may therefore misestimate social factors’ effects on health. Using data from the Canadian Community Health Survey and Canada 2001 Census we construct and compare “disease-specific” and “generalized health impact” (GHI models to gauge the negative health effects of one social exposure: socioeconomic position (SEP. We use logistic and multinomial multilevel modeling with neighbourhood-level material deprivation, individual-level education and household income to compare and contrast the two approaches. In disease-specific models, the social determinants under study were each associated with the health conditions of interest. However, larger effect sizes were apparent when outcomes were modeled as compound health problems (0, 1, 2, or 3+ conditions using the GHI approach. To more accurately estimate social exposures’ impacts on population health, researchers should consider a GHI framework.

Heather L. White

2013-03-01

164

Modeling the cumulative effects of social exposures on health: moving beyond disease-specific models.  

Science.gov (United States)

The traditional explanatory models used in epidemiology are "disease specific", identifying risk factors for specific health conditions. Yet social exposures lead to a generalized, cumulative health impact which may not be specific to one illness. Disease-specific models may therefore misestimate social factors' effects on health. Using data from the Canadian Community Health Survey and Canada 2001 Census we construct and compare "disease-specific" and "generalized health impact" (GHI) models to gauge the negative health effects of one social exposure: socioeconomic position (SEP). We use logistic and multinomial multilevel modeling with neighbourhood-level material deprivation, individual-level education and household income to compare and contrast the two approaches. In disease-specific models, the social determinants under study were each associated with the health conditions of interest. However, larger effect sizes were apparent when outcomes were modeled as compound health problems (0, 1, 2, or 3+ conditions) using the GHI approach. To more accurately estimate social exposures' impacts on population health, researchers should consider a GHI framework. PMID:23528813

White, Heather L; O'Campo, Patricia; Moineddin, Rahim; Matheson, Flora I

2013-04-01

165

Amplification of the uvrA gene product of Escherichia coli to 7% of cellular protein by linkage to the p/sub L/ promoter of pKC30  

International Nuclear Information System (INIS)

Researchers have constructed a hybrid pKC30-uvrA plasmid (pGHY5003) in which transcription of the uvrA gene can be induced under p/sub L/ control to amplify the uvrA gene product to 7% of cellular protein. To construct pGHY5003, researchers developed a genetic selection using the basal level of expression (300C) from p/sub L/ in thermosensitive cI857 lysogens to isolate appropriately tailored repair genes inserted at the Hpa I site of pKC30 from recombinant DNA mixtures with a variety of products. In addition, a post-uv-irradiation radiolabeling method was adapted to screen inserts for temperature-inducible polypeptide synthesis directed by transcription under p/sub L/ control rapidly. This should prove generally useful for isolating genes inserted at the Hpa I site of plasmid pKC30 with the following characteristics: (1) genetically functional hybrid plasmids selected from a large population of exonucleolytically tailored fragments ligated into Hpa I of pKC30 and (2) production of high-level amplification for the gene product of interest by screening for post-uv-irradiation temperature inducibility of polypeptides synthesized from hybrid plasmids. The level of amplification obtained for the uvrA gene product from pGHY5003 is approximately 10,000-fold higher than estimates of the level of uvrA protein in logarithmic phase Escherichia coli

166

Abundances of PAHs in the ISM: Confronting Observations with Experimental Results  

CERN Document Server

We present recent UV laboratory spectra of various polycyclic aromatic hydrocarbons (PAHs) and explore the potential of these molecules as carriers of the DIBs. From a detailed comparison of gas-phase and Ne-matrix absorption spectra of anthracene, phenanthrene, pyrene, 2,3-benzofluorene, benzo[ghi]perylene, and hexabenzocoronene with new interstellar spectra, we infer upper limits in the abundance of these PAHs in the interstellar medium. Upper limits in the column densities of anthracene of $0.8 - 2.8 \\times 10^{12}$\\ cm$^{-2}$ and of pyrene and 2,3-benzofluorene ranging from $2 - 8 \\times 10^{12}$\\ cm$^{-2}$ are inferred. Upper limits in the column densities of benzo[ghi]perylene are $0.9 - 2.4 \\times 10^{13}$ and $10^{14}$ cm$^{-2}$ for phenanthrene. The measurements indicate fractional abundances of anthracene, pyrene, and 2,3-benzofluorene of a few times $10^{-10}$. Upper limits in the fractional abundance of benzo[ghi]perylene of a few times $10^{-9}$ and of phenanthrene of few times $10^{-8}$ are infe...

Gredel, R; Rouille, G; Steglich, M; Huisken, F; Henning, Th

2011-01-01

167

Bioelectric impedance overestimates the body fat in overweight and underestimates in Brazilian obese women: a comparation with Segal equation 1 / Impedancia bioeléctrica sobrestima la grasa corporal con sobrepeso y subestima en mujeres brasileñas obesas: una comparación con la ecuación Segal  

Scientific Electronic Library Online (English)

Full Text Available SciELO Spain | Language: English Abstract in spanish Introducción: El sobrepeso y la obesidad son factores de riesgo para la aparición de enfermedades cardiovasculares y la antropometría es importante como herramienta clínica para la planificación y la formulación de políticas de salud a nivel de la población. Así el objetivo de este trabajo fue compa [...] rar el simple porcentage de grasa corporal (%GC) derivada directamente por médio del análisis de impedância bioeléctrica (BIA) con el derivada de la Segal et al (1988) la ecuación que utiliza el valor de la resistência BIA, em lãs mujeres obesas y con sobrepeso. Métodos: Este estudio, realizado con 86 mujeres adultas (50,5 ± 11,0 años de edad). El peso corporal y la altura se mide y calcula el índice de masa corporal (IMC). %GC fue evaluado por BIA (Biodynamics® model 450) y la ecuación de Segal. Resultados: %GC derivados de BIA% (38,0 ± 4,6) y Segal et al (1988) (38,7 ± 8,1%) fue similar (p = 0,85). Sin embargo, cuando las mujeres se distribuyeron en dos grupos según su IMC, el sobrepeso (n = 40; IMC= 27,3 ± 1,2 kg/m²) y obesidad (n= 46; IMC= 36,2 ± 5,1 kg/m²), los dos métodos que se presentan los resultados de diferencias significativas (p = 0,000). El %GC de las mujeres con sobrepeso fue de 34,6 ± 3,6% por la BIA y el 30,3 ± 2,1% cuando se calcula por la ecuación Segal. En las mujeres obesas, el BF% fue 41,0 ± 3,0% y el 46,0 ± 2,6%, respectivamente. Conclusión: BIA sobrestimado %GC en sobrepeso (+14,2%; +3,0 kg) y subestimado en obesos (-10,9; -4,4 kg) las mujeres. Abstract in english Introduction: Overweight and obesity are risk factors to appearance of cardiovascular diseases and anthropometry is important as clinical tool for planning and health policymaking at population level. Thus, aim of this work was to compare the simple body fat percentage (%BF) obtained straight by bio [...] eletric impedance (BIA) to the one obtained by the equation of Segal et al (1988), which uses the BIA resistance value, overweight among adult women. Methods: This study conducted with 86 adult women (50.5 ± 11.0 years old). Body weight and height were measured and estimated the body mass index (BMI). %BF was assessed by BIA (Biodynamics® model 450) and Segal equation. Results: %BF derived from BIA (38.0 ± 4.6%) and Segal et al (1988) (38.7 ± 8.1%) were similar (p=0.85). However, when the women were distributed, in two groups based on their BMI, overweight (n=40; BMI= 27.3 ± 1.2 kg/m²) and obesity (n=46; BMI= 36.2 ± 5.1 kg/m²), the two methods presented results significant different (p=0.000). The %BF of overweight women was 34.6±3.6% by BIA and 30.3±2.1% when estimated by Segal equation. In obese women, the %BF was 41.0±3.0% and 46.0±2.6%, respectively. Conclusion: BIA overestimated %BF in overweight (+14.2%; +3.0 kg) and underestimated in obese (-10.9%;-4.4 kg) women.

G. D., Pimentel; A. B., Bernhard; M. R. P., Frezza; A. E. M., Rinaldi; R. C., Burini.

2010-10-01

168

Bioelectrical impedance analysis as a laboratory activity: At the interface of physics and the body  

Science.gov (United States)

We present a novel laboratory activity on RC circuits aimed at introductory physics students in life-science majors. The activity teaches principles of RC circuits by connecting ac-circuit concepts to bioelectrical impedance analysis (BIA) using a custom-designed educational BIA device. The activity shows how a BIA device works and how current, voltage, and impedance measurements relate to bioelectrical characteristics of the human body. From this, useful observations can be made including body water, fat-free mass, and body fat percentage. The laboratory is engaging to pre-health and life-science students, as well as engineering students who are given the opportunity to observe electrical components and construction of a commonly used biomedical device. Electrical concepts investigated include alternating current, electrical potential, resistance, capacitance, impedance, frequency, phase shift, device design, and the use of such topics in biomedical analysis.

Mylott, Elliot; Kutschera, Ellynne; Widenhorn, Ralf

2014-05-01

169

Adipose-derived mesenchymal stem cells markedly attenuate brain infarct size and improve neurological function in rats  

Directory of Open Access Journals (Sweden)

Full Text Available Abstract Background The therapeutic effect of adipose-derived mesenchymal stem cells (ADMSCs on brain infarction area (BIA and neurological status in a rat model of acute ischemic stroke (IS was investigated. Methods Adult male Sprague-Dawley (SD rats (n = 30 were divided into IS plus intra-venous 1 mL saline (at 0, 12 and 24 h after IS induction (control group and IS plus intra-venous ADMSCs (2.0 × 106 (treated interval as controls (treatment group after occlusion of distal left internal carotid artery. The rats were sacrificed and brain tissues were harvested on day 21 after the procedure. Results The results showed that BIA was larger in control group than in treatment group (p Conclusions ADMSC therapy significantly limited BIA and improved sensorimotor dysfunction after acute IS.

Sun Cheuk-Kwan

2010-06-01

170

Ichthyometry and electrical bioimpedance analysis to estimate the body composition of tambatinga / Ictiometria e bioimpedância elétrica para estimativa da composição corporal do tambatinga  

Scientific Electronic Library Online (English)

Full Text Available Analisar composição corporal é relevante para caracterizar necessidades nutricionais e fase de terminação de peixes. Objetivou-se estudar a relação entre variáveis ictiométricas (peso, comprimentos total e padrão, densidade e rendimentos), bromatológicas (gordura, proteína, cinza e umidade) e aquela [...] s da análise por bioimpedância ou BIA (resistência, reatância, ângulo de fase e índices de composição), no híbrido tambatinga (Colossoma macropomum x Piaractus brachypomus). Em um viveiro não fertilizado, 520 juvenis foram cultivados com ração comercial. Com idade de 136 dias após a eclosão dos ovos, 37,69 g de peso, 12,96 cm de comprimento total, 15 peixes, colhidos ao acaso, foram anestesiados (eugenol) e submetidos à primeira de quatorze avaliações quinzenais (BIA e biometria). Após eutanásia foram dissecados e pesados: carcaça inteira com cabeça, filé e pele (CICFP), filé com pele (FCP) e resto da carcaça com cabeça (CCC). Juntos, FCP e CCC foram moídos e homogeneizados para análise bromatológica. Estimativas da composição corporal e de rendimentos do tambatinga, com modelos incluindo variáveis ictiométricas e da BIA, apresentaram coeficientes de correlação entre 0,81 (para o rendimento do FCP) e 1,00 (para cinzas totais). Analogamente, modelos com a inclusão apenas de variáveis da BIA mostram coeficientes de correlação entre 0,81 (rendimento do FCP e do CCC) e 0,98 (para cinzas totais). Portanto, no tambatinga, a técnica da BIA possibilita a estimativa do rendimento de filé com pele e composição corporal (umidade, gordura, cinza e proteína). Os melhores modelos agregam variáveis ictiométricas e da BIA. Abstract in english Body composition analysis is relevant to characterize the nutritional requirements and finishing phase of fish. The aim of this study was to investigate the relationship between ichthyometric (weight, total and standard length, density and yields), bromatological (fat, protein, ash and water content [...] ) and bioelectrical-impedance-analysis (BIA) (resistance, reactance, phase angle and composition indexes) variables in the hybrid tambatinga (Colossoma macropomum × Piaractus brachypomus). In a non-fertilized vivarium, 520 juveniles were housed and fed commercial rations. Then, 136 days after hatching (DAH), 15 fish with an average weight of 37.69 g and average total length of 12.96 cm were randomly chosen, anesthetized (eugenol) and subjected to the first of fourteen fortnightly assessments (BIA and biometry). After euthanasia, the following parts were weighed: whole carcass with the head, fillet, and skin (WC); fillet with skin (FS); and the remainder of the carcass with the head (CH). Together, FS and CH were ground and homogenized for the bromatological analyses. Estimates of the body composition and yields of tambatinga, with models including ichthyometric and BIA variables, showed correlation coefficients ranging from 0.81 (for the FS yield) to 1,00 (for the total ash). Similarly, models that included only BIA variables had correlation coefficients ranging from 0.81 (FS and CH yields) to 0.98 (for the total ash). Therefore, in tambatinga, the BIA technique allows the estimation of the yield of the fillet with skin and the body composition (water content, fat, ash, and protein). The best models combine ichthyometric and BIA variables.

Francisco Teixeira, Andrade; Márvio Lobão Teixeira de, Abreu; João Batista, Lopes; Agustinho Valente de, Figueiredo; Maria de Nazaré Bona Alencar, Araripe; Antônio Hosmylton Carvalho, Ferreira.

2014-06-01

171

Reliability of non-lethal assessment methods of body composition and energetic status exemplified by applications to eel (Anguilla anguilla) and carp (Cyprinus carpio)  

DEFF Research Database (Denmark)

tNon-lethal assessments of proximate body composition of fish can help unravelling the physiologicaland condition-dependent mechanisms of individual responses to ecological challenges. Common non-lethal methods designed to index nutrient composition in fish include the relative condition factor (Kn),bioelectric impedance-based assessments of body composition (BIA), and microwave-based “fat” meters(FM). Previous studies have revealed mixed findings as to the reliability of each of these. We compared theperformance of Kn, BIA and FM at different temperatures to predict energetic status of the whole bodiesof live eel (Anguilla anguilla) and carp (Cyprinus carpio) and the dorsal white muscle of carp. Homogenizedfish flesh was used for calibration. Relative dry mass was strongly correlated with relative fat content(R2up to 96.7%) and energy density (R2up to 99.1%). Thus, calibrations were only conducted for relativedry mass as an index of energetic status of a fish. FM readings were found to predict relative dry mass ofwhole body in eel (R2= 0.707) and carp (R2= 0.676), and dorsal white muscle of carp (R2= 0.814) well. Bycontrast, BIA measurements and Knwere much less suited to identify variation in relative dry mass. BIA-based models were also temperature-dependent. As a result, a regression model calibrated at 10?C andapplied to BIA measurements at 20?C was found to underestimate energetic status of a fish. By contrast,no effects of temperature on FM calibration results were found. Based on our study, the FM approach isthe most suitable method to non-lethally estimate energetic status in both, carp and eel, whereas BIA is oflimited use for energetic measurements in the same species, in contrast to other reports in the literature

Klefoth, Thomas; Skov, Christian

2013-01-01

172

Microcystin assimilation and detoxification by Daphnia spp. in two ecosystems of different cyanotoxin concentrations  

Directory of Open Access Journals (Sweden)

Full Text Available Microcystins (MCs, the main group of cyanotoxins, can induce oxidative stress in the cells of aquatic animals. This study evaluated the sensitivity of daphniids – from two ecosystems characterised by different trophic states and habitat levels of cyanobacteria abundance – to microcystin toxicity by analysing oxidative stress parameters and MC detoxification ability. As a study site, we chose the eutrophic Sulejow reservoir, which has regular annual toxic cyanobacterial blooms, and the mesotrophic lake Bia?e, where low abundances of cyanobacteria have only recently appeared. We found much higher accumulations of MCs in tissues of Daphnia spp. in lake Bia?e, despite low toxin concentrations in this ecosystem compared with the Sulejow reservoir. Simultaneously, high levels of lipid peroxidation (LPO and a significant decrease in glutathione (GSH were observed in daphniid cells in lake Bia?e, while LPO levels were generally lower and GSH concentration more stable in the Sulejow reservoir. Catalase activity, which reflects more efficient oxidative protection, was always significantly higher in the reservoir than in lake Bia?e. These results demonstrate that generations of daphniids from the Sulejow reservoir had more effective antioxidant systems protecting them against the accumulation of cyanobacterial toxins; thereby, they are less susceptible to toxic effects than the daphniids from lake Bia?e. However, the presence of conjugate forms of microcystins (MC-GSH and MC-Cys in tissues of the studied animals indicated the ability for MC detoxification by daphniids from the Sulejow reservoir and lake Bia?e. Nevertheless, the high effectiveness of antioxidant systems in daphniids coexisting with cyanobacteria for a long time in the Sulejow reservoir indicates the importance of a selective pressure exerted by toxic cyanobacterial strains that favours the most resistant daphniid genotypes.

Marzena Wielanek

2013-02-01

173

Ethnic Variability in Body Size, Proportions and Composition in Children Aged 5 to 11 Years: Is Ethnic-Specific Calibration of Bioelectrical Impedance Required?  

Science.gov (United States)

Background Bioelectrical Impedance Analysis (BIA) has the potential to be used widely as a method of assessing body fatness and composition, both in clinical and community settings. BIA provides bioelectrical properties, such as whole-body impedance which ideally needs to be calibrated against a gold-standard method in order to provide accurate estimates of fat-free mass. UK studies in older children and adolescents have shown that, when used in multi-ethnic populations, calibration equations need to include ethnic-specific terms, but whether this holds true for younger children remains to be elucidated. The aims of this study were to examine ethnic differences in body size, proportions and composition in children aged 5 to 11 years, and to establish the extent to which such differences could influence BIA calibration. Methods In a multi-ethnic population of 2171 London primary school-children (47% boys; 34% White, 29% Black African/Caribbean, 25% South Asian, 12% Other) detailed anthropometric measurements were performed and ethnic differences in body size and proportion were assessed. Ethnic differences in fat-free mass, derived by deuterium dilution, were further evaluated in a subsample of the population (n?=?698). Multiple linear regression models were used to calibrate BIA against deuterium dilution. Results In children <11 years of age, Black African/Caribbean children were significantly taller, heavier and had larger body size than children of other ethnicities. They also had larger waist and limb girths and relatively longer legs. Despite these differences, ethnic-specific terms did not contribute significantly to the BIA calibration equation (Fat-free mass?=?1.12+0.71*(height2/impedance)+0.18*weight). Conclusion Although clear ethnic differences in body size, proportions and composition were evident in this population of young children aged 5 to 11 years, an ethnic-specific BIA calibration equation was not required. PMID:25478928

Lee, Simon; Bountziouka, Vassiliki; Lum, Sooky; Stocks, Janet; Bonner, Rachel; Naik, Mitesh; Fothergill, Helen; Wells, Jonathan C. K.

2014-01-01

174

Benzylisoquinoline alkaloid metabolism: a century of discovery and a brave new world.  

Science.gov (United States)

Benzylisoquinoline alkaloids (BIAs) are a structurally diverse group of plant specialized metabolites with a long history of investigation. Although the ecophysiological functions of most BIAs are unknown, the medicinal properties of many compounds have been exploited for centuries. These include the narcotic analgesics codeine and morphine, the antimicrobial agents sanguinarine and berberine, and the antitussive and anticancer drug noscapine. BIA biosynthesis involves a restricted number of enzyme types that catalyze landmark coupling reactions and subsequent functional group modifications. A pathogenesis-related (PR)10/Bet v1 'Pictet-Spenglerase', several O-methyl-, N-methyl- and O-acetyltransferases, cytochromes P450, FAD-dependent oxidases, non-heme dioxygenases and NADPH-dependent reductases have been implicated in the multistep pathways leading to structurally diverse alkaloids. A small number of plant species, including opium poppy (Papaver somniferum) and other members of the Ranunculales, have emerged as model systems to study BIA metabolism. The expansion of resources to include a wider range of plant species is creating an opportunity to investigate previously uncharacterized BIA pathways. Contemporary knowledge of BIA metabolism reflects over a century of research coupled with the development of key innovations such as radioactive tracing, enzyme isolation and molecular cloning, and functional genomics approaches such as virus-induced gene silencing. Recently, the emergence of transcriptomics, proteomics and metabolomics has expedited the discovery of new BIA biosynthetic genes. The growing repository of BIA biosynthetic genes is providing the parts required to apply emerging synthetic biology platforms to the development of production systems in microbes as an alternative to plants as a commecial source of valuable BIAs. PMID:23385146

Hagel, Jillian M; Facchini, Peter J

2013-05-01

175

Comparison of body composition methods in overweight and obese Brazilian women / Comparação de métodos da composição corporal em mulheres brasileiras com sobrepeso e obesidade  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: English Abstract in portuguese OBJETIVO: Verificar a concordância dos métodos de impedância bioelétrica (BIA) usando três equações diferentes, e medida das pregas cutâneas (PC) com absorciometria de raios-X de dupla energia (DEXA), para análise da composição corporal de mulheres com sobrepeso e obesidade. SUJEITOS E MÉTODOS: Em 3 [...] 4 mulheres (43,8 ± 10.9 anos; índice de massa corporal [IMC] 32,1 ± 4,3 kg/m²) foram avaliados: percentual de gordura total (%GT), massa gorda (MG) e massa magra (MM) por DEXA, PC, BIA-Fab (equação do fabricante), BIA-Segal e BIA-Gray (equações para obesidade). Foram utilizados: análise de regressão, método de Bland-Altman e coeficiente de correlação intraclasse (CCI). RESULTADOS: A concordância absoluta entre DEXA e BIA-Fab foi fraca para todas as medidas (BF% -6,8% ± 3,7%, FM -3,1 ± 3,6 kg, FFM 5,7 ± 2,8 kg). BIA-Segal apresentou boa concordância absoluta com DEXA para %GT (1,5% ± 1,5%), MG (1,0 ± 3,2 kg) e MM (1,5 ± 2,6 kg), mas com amplos limites de concordância. BIA-Gray teve boa concordância absoluta com DEXA para MG (2,3 ± 4,1 kg) e pequenos vieses para %GT (0,05% ± 4,4%) e MM (0,2 ± 2,9 kg), mas com amplos limites de concordância. BIA-Gray e DEXA tiveram maior CCI entre métodos. Houve boa concordância absoluta entre DEXA e PC para %GT (-2,3% ± 5,8%), MG (0,09 ± 4,7 kg) e MM (2,4 ± 4,4 kg), mas com amplos limites de concordância e pouca reprodutibilidade no CCI, entre DEXA e PC para %GT. CONCLUSÃO: A BIA, utilizando equação específica para obesidade, foi o método que melhor concordou com DEXA, para estimar %GT, MG e MM em mulheres com sobrepeso e obesidade. Abstract in english OBJECTIVE: The purpose of this study was to compare skinfold thickness (SKF) and bioelectrical impedance analysis (BIA) of body composition using three different equations against dual-energy X-ray absorptiometry (DXA) in overweight and obese Brazilian women. SUBJECTS AND METHOD: Thirty-four women ( [...] age 43.8 ± 10.9 years; body mass index [BMI] 32.1 ± 4.3 kg/m²) had percentage body fat (BF%), fat mass (FM) and fat-free mass (FFM) estimated by DXA, SKF and BIA (BIA-man: manufacturer's equation; and predictive obesity-specific equations of Segal and of Gray). Regression analysis, Bland-Altman plot analysis and intra-class correlation coefficient (ICC) were used to compare methods. RESULTS: Absolute agreement between DXA and BIA-man was poor for all measures of body composition (BF% -6.8% ± 3.7%, FM -3.1 ± 3.6 kg, FFM 5.7 ± 2.8 kg). BIA-Segal equation showed good absolute agreement with DXA for BF% (1.5% ± 1.5%), FM (1.0 ± 3.2 kg) and FFM (1.5 ± 2.6 kg), albeit the limits of agreement were wide. BIA-Gray equation showed good absolute agreement with DXA for FM (2.3 ± 4.1 kg), and smaller biases for BF% (0.05% ± 4.4%) and FFM (0.2 ± 2.9 kg), although wide limits of agreement. BIA-Gray and DXA showed the highest ICC among the pairs of methods. A good absolute agreement was observed between DXA and SKF for BF% (-2.3% ± 5.8%), FM (0.09 ± 4.7 kg), and FFM (2.4 ± 4.4 kg), although limits of agreement were wider and ICC between DXA and SKF for BF% indicated poor degree of reproducibility. CONCLUSION: These findings show that both BIA-Segal and BIA-Gray equations are suitable for BF%, FM and FFM estimations in overweight and obese women.

Valeria Bender, Braulio; Valéria Cristina Soares, Furtado; Maria das Graças, Silveira; Maria Helena, Fonseca; José Egídio, Oliveira.

2010-06-01

176

Batch-injection stripping voltammetry (tube-less flow-injection analysis) of trace metals with on-line sample pretreatment  

OpenAIRE

The most essential limitation of batch-injection analysis (BIA) methodology compared to other flow methods (CFA, FIA, SIA) is the lack of possibility of on-line sample processing in the measuring system. Some procedures of on-line sample pretreatment in BIA are possible by changing the plastic tip of the automatic micropipette used for sample injection into a flow-through reactor, e.g. by packing it with a bed of a solid sorbent. This concept is employed in the voltammetric stripping determin...

Trojanowicz, Marek; Kozminski, Przemyslaw; Dias, Humberto; Brett, Christopher M. A.

2005-01-01

177

Percentage of Body Fat Assessment Using Bioelectrical Impedance Analysis and Dual-Energy X-ray Absorptiometry in a Weight Loss Program for Obese or Overweight Chinese Adults  

OpenAIRE

The current study aimed to compare the estimates of body fat percentage (%BF) by performing bioelectrical impedance analysis (BIA) and dual energy X-ray absorptiometry (DXA) in a sample of obese or overweight Chinese adults who participated in a weight-loss randomized control trial stratified by gender to determine whether or not BIA is a valid measurement tool. Among 189 adults [73 males, 116 females; age ?=?41 to 74 years; mean body mass index (BMI) ?=?27.3 kg/m2], assessments of %B...

Li, Yi-chun; Li, Chia-ing; Lin, Wen-yuan; Liu, Chiu-shong; Hsu, Hua-shui; Lee, Cheng-chun; Chen, Fei-na; Li, Tsai-chung; Lin, Cheng-chieh

2013-01-01

178

Phase sensitive spectral domain interferometry for label free biomolecular interaction analysis and biosensing applications  

Science.gov (United States)

Biomolecular interaction analysis (BIA) plays vital role in wide variety of fields, which include biomedical research, pharmaceutical industry, medical diagnostics, and biotechnology industry. Study and quantification of interactions between natural biomolecules (proteins, enzymes, DNA) and artificially synthesized molecules (drugs) is routinely done using various labeled and label-free BIA techniques. Labeled BIA (Chemiluminescence, Fluorescence, Radioactive) techniques suffer from steric hindrance of labels on interaction site, difficulty of attaching labels to molecules, higher cost and time of assay development. Label free techniques with real time detection capabilities have demonstrated advantages over traditional labeled techniques. The gold standard for label free BIA is surface Plasmon resonance (SPR) that detects and quantifies the changes in refractive index of the ligand-analyte complex molecule with high sensitivity. Although SPR is a highly sensitive BIA technique, it requires custom-made sensor chips and is not well suited for highly multiplexed BIA required in high throughput applications. Moreover implementation of SPR on various biosensing platforms is limited. In this research work spectral domain phase sensitive interferometry (SD-PSI) has been developed for label-free BIA and biosensing applications to address limitations of SPR and other label free techniques. One distinct advantage of SD-PSI compared to other label-free techniques is that it does not require use of custom fabricated biosensor substrates. Laboratory grade, off-the-shelf glass or plastic substrates of suitable thickness with proper surface functionalization are used as biosensor chips. SD-PSI is tested on four separate BIA and biosensing platforms, which include multi-well plate, flow cell, fiber probe with integrated optics and fiber tip biosensor. Sensitivity of 33 ng/ml for anti-IgG is achieved using multi-well platform. Principle of coherence multiplexing for multi-channel label-free biosensing applications is introduced. Simultaneous interrogation of multiple biosensors is achievable with a single spectral domain phase sensitive interferometer by coding the individual sensograms in coherence-multiplexed channels. Experimental results demonstrating multiplexed quantitative biomolecular interaction analysis of antibodies binding to antigen coated functionalized biosensor chip surfaces on different platforms are presented.

Chirvi, Sajal

179

Comparison of body composition methods in overweight and obese Brazilian women Comparação de métodos da composição corporal em mulheres brasileiras com sobrepeso e obesidade  

Directory of Open Access Journals (Sweden)

Full Text Available OBJECTIVE: The purpose of this study was to compare skinfold thickness (SKF and bioelectrical impedance analysis (BIA of body composition using three different equations against dual-energy X-ray absorptiometry (DXA in overweight and obese Brazilian women. SUBJECTS AND METHOD: Thirty-four women (age 43.8 ± 10.9 years; body mass index [BMI] 32.1 ± 4.3 kg/m² had percentage body fat (BF%, fat mass (FM and fat-free mass (FFM estimated by DXA, SKF and BIA (BIA-man: manufacturer's equation; and predictive obesity-specific equations of Segal and of Gray. Regression analysis, Bland-Altman plot analysis and intra-class correlation coefficient (ICC were used to compare methods. RESULTS: Absolute agreement between DXA and BIA-man was poor for all measures of body composition (BF% -6.8% ± 3.7%, FM -3.1 ± 3.6 kg, FFM 5.7 ± 2.8 kg. BIA-Segal equation showed good absolute agreement with DXA for BF% (1.5% ± 1.5%, FM (1.0 ± 3.2 kg and FFM (1.5 ± 2.6 kg, albeit the limits of agreement were wide. BIA-Gray equation showed good absolute agreement with DXA for FM (2.3 ± 4.1 kg, and smaller biases for BF% (0.05% ± 4.4% and FFM (0.2 ± 2.9 kg, although wide limits of agreement. BIA-Gray and DXA showed the highest ICC among the pairs of methods. A good absolute agreement was observed between DXA and SKF for BF% (-2.3% ± 5.8%, FM (0.09 ± 4.7 kg, and FFM (2.4 ± 4.4 kg, although limits of agreement were wider and ICC between DXA and SKF for BF% indicated poor degree of reproducibility. CONCLUSION: These findings show that both BIA-Segal and BIA-Gray equations are suitable for BF%, FM and FFM estimations in overweight and obese women.OBJETIVO: Verificar a concordância dos métodos de impedância bioelétrica (BIA usando três equações diferentes, e medida das pregas cutâneas (PC com absorciometria de raios-X de dupla energia (DEXA, para análise da composição corporal de mulheres com sobrepeso e obesidade. SUJEITOS E MÉTODOS: Em 34 mulheres (43,8 ± 10.9 anos; índice de massa corporal [IMC] 32,1 ± 4,3 kg/m² foram avaliados: percentual de gordura total (%GT, massa gorda (MG e massa magra (MM por DEXA, PC, BIA-Fab (equação do fabricante, BIA-Segal e BIA-Gray (equações para obesidade. Foram utilizados: análise de regressão, método de Bland-Altman e coeficiente de correlação intraclasse (CCI. RESULTADOS: A concordância absoluta entre DEXA e BIA-Fab foi fraca para todas as medidas (BF% -6,8% ± 3,7%, FM -3,1 ± 3,6 kg, FFM 5,7 ± 2,8 kg. BIA-Segal apresentou boa concordância absoluta com DEXA para %GT (1,5% ± 1,5%, MG (1,0 ± 3,2 kg e MM (1,5 ± 2,6 kg, mas com amplos limites de concordância. BIA-Gray teve boa concordância absoluta com DEXA para MG (2,3 ± 4,1 kg e pequenos vieses para %GT (0,05% ± 4,4% e MM (0,2 ± 2,9 kg, mas com amplos limites de concordância. BIA-Gray e DEXA tiveram maior CCI entre métodos. Houve boa concordância absoluta entre DEXA e PC para %GT (-2,3% ± 5,8%, MG (0,09 ± 4,7 kg e MM (2,4 ± 4,4 kg, mas com amplos limites de concordância e pouca reprodutibilidade no CCI, entre DEXA e PC para %GT. CONCLUSÃO: A BIA, utilizando equação específica para obesidade, foi o método que melhor concordou com DEXA, para estimar %GT, MG e MM em mulheres com sobrepeso e obesidade.

Valeria Bender Braulio

2010-06-01

180

Capacidade preditiva de diferentes equipamentos de bioimpedância elétrica, com e sem preparo prévio, na avaliação de adolescentes / Predictive capacity of different bioelectrical impedance analysis devices, with and without protocol, in evaluation of adolescents  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Languages: English, Portuguese Abstract in portuguese OBJETIVO: determinar a capacidade preditiva de quatro equipamentos distintos de bioimpedância elétrica (BIA) na avaliação de adolescentes, com e sem a realização de protocolo. MÉTODOS: estudo transversal realizado com 215 adolescentes de 10 a 14 anos, de ambos os sexos, avaliados através da antropom [...] etria e da composição corporal pelo DEXA e por quatro equipamentos distintos de BIA, com e sem protocolo. Foram utilizados os testes estatísticos: Kolmogorov-Smirnov, do Qui-quadrado, t-Student ou Mann-Whitney, Kruskal-Wallis, Wilcoxon e Índice Kappa. Foram construídas curvas ROC e calculados os valores de sensibilidade, especificidade e preditivos positivo e negativo. RESULTADOS: dos adolescentes, 44,2% apresentaram excesso de gordura corporal. A BIA tetrapolar, equipada com oito eletrodos táteis, demonstrou-se mais sensível e com resultados mais próximos ao DEXA (AUC = 0,964 com protocolo e AUC = 0,973 sem protocolo, p 0,05). CONCLUSÃO: a BIA é um instrumento capaz de predizer distrofias relacionadas à gordura corporal de adolescentes. Na impossibilidade de realização do protocolo, seus resultados podem ser úteis em estudos populacionais. Abstract in english OBJECTIVE: this study was performed to determine the predictive capacity of four different bioelectrical impedance analysis (BIA) devices in the assessment of adolescents, with and without a protocol. METHODS: a cross-sectional study was performed with 215 adolescents aged 10 to 14 years, of both ge [...] nders, evaluated through anthropometry and body composition by dual energy X-ray absorptiometry (DXA) and by four different BIA devices, with and without a protocol. The following tests were used: Kolmogorov-Smirnov's, chi-squared, Student's t or Mann-Whitney's, Kruskal-Wallis's, Wilcoxon's, and kappa index. The ROC curves were constructed and the sensitivity, specificity, and positive and negative predictive values were calculated. RESULTS: of the 215 adolescents, 44.2% had excessive body fat. The tetrapolar BIA device equipped with eight tactile electrodes showed more sensitivity and results that were closer to those obtained by DXA (area under the ROC curve [AUC] = 0.964 with protocol and AUC = 0.973 without protocol, p 0.05). CONCLUSION: BIA is capable of predicting alterations in adolescents' body composition. When it is impossible to perform the assessment with a protocol, its results may be useful in population studies.

Vivian Siqueira Santos, Gonçalves; Eliane Rodrigues de, Faria; Sylvia do Carmo Castro, Franceschini; Silvia Eloiza, Priore.

2013-12-01

181

Estimativa da massa muscular esquelética em mulheres idosas: validade da impedância bioelétrica Validity of bioelectrical impedance analysis for the estimation of skeletal muscle mass in elderly women  

Directory of Open Access Journals (Sweden)

Full Text Available O presente estudo tem como objetivos: a verificar a concordância entre os métodos da impedância bioelétrica (BIA e da absortometria radiológica de dupla energia (DXA para a estimativa da massa muscular esquelética (MME; e b analisar o poder preditivo de variáveis antropométricas e da BIA para a predição da MME em idosas. Foram avaliadas 120 mulheres (60 a 81 anos, residentes na região Sul do Brasil. Mensuraram-se as variáveis antropométricas (massa corporal e estatura; a resistência e hidratação dos tecidos livres de gordura foram medidas pela técnica da BIA tetrapolar (Biodinamics - BF-310, e pela DXA de corpo inteiro (Lunar Prodigy DF + 14319 Radiation e software 7.52.002 DPX-L. A diferença entre os métodos foi verificada pelo teste t pareado, análise dos resíduos e o coeficiente de correlação. O valor preditivo das variáveis antropométricas e de BIA foi verificado pela regressão linear múltipla, adotando nível de significância de p 0,01. Observou-se que a BIA subestimou em média 0,8kg (IC95%: -3,7; 2,0kg a MME, quando comparada com a DXA. Foi observada alta correlação entre os métodos (r² = 0,75; p The objectives of the present study were: a to determine the agreement between bioelectrical impedance analysis (BIA and dual-energy X-ray absorptiometry (DXA for the estimation of skeletal muscle mass (SMM, and b to analyze the predictive power of anthropometric variables and BIA for the prediction of SMM in elderly women. A total of 120 women (60 to 81 years, living in the southern region of Brazil, were studied. Anthropometric variables (body weight and height were measured. Resistance and hydration of fat-free tissues were measured by tetrapolar BIA (Biodynamics, BF-310 and by whole-body DXA (Lunar Prodigy DF + 14319 Radiation and DPX-L software, version 7.52.002. Differences between methods were determined using the paired t-test, analysis of residuals and correlation coefficient. The predictive value of the anthropometric variables and BIA was evaluated by multiple linear regression, adopting a level of significance of p < 0.05. No significant difference in the estimation of SMM was observed between methods (p < 0.01. BIA underestimated SMM in mean of 0.8 kg (95%CI: -3.7; 2.0 kg when compared to DXA. Correlation between methods was high (r² = 0.75; p < 0.01. Regression analysis demonstrated that the ratio between the square of height and resistance (HEIGHT²/R explained 80% of the variation in SMM when adjusted to body weight and age, regardless of body fat, lean tissue hydration or body mass index. Thus, the BIA equation tested here is a valid tool for the estimation of SMM in elderly women and its value is best predicted by the regression model including HEIGHT²/R adjusted to body weight and age.

Cassiano Ricardo Rech

2010-04-01

182

Look-up table of quadrics applied to corneal topography [Presentation  

OpenAIRE

Spanish Ministerio de Ciencia e Innovación through the project FIS2009-05639-ET and BIA2011-22704, the Generalitat Valenciana through the project PROMETEO/2011/021 and the University of Alicante through the project GRE10-09. A.B. Roig thanks Fundación Cajamurcia the grant “Beca de investigación Cajamurcia 2010”.

Espinosa Toma?s, Julia?n; Roig Herna?ndez, Ana Bele?n; Pe?rez Rodri?guez, Jorge; Mas Candela, David; Illueca Contri, Carlos

2012-01-01

183

Look-up table of quadrics applied to corneal topography  

OpenAIRE

Spanish Ministerio de Ciencia e Innovación through the project FIS2009-05639-ET and BIA2011-22704, the Generalitat Valenciana through the project PROMETEO/2011/021 and the University of Alicante through the project GRE10-09. A.B. Roig thanks Fundación Cajamurcia the grant “Beca de investigación Cajamurcia 2010”.

Espinosa Toma?s, Julia?n; Roig Herna?ndez, Ana Bele?n; Pe?rez Rodri?guez, Jorge; Mas Candela, David; Illueca Contri, Carlos

2012-01-01

184

Can abdominal bioelectrical impedance refine the determination of visceral fat from waist circumference?  

International Nuclear Information System (INIS)

Ryo et al (2005 Diabetes Care 28 451–3) reported a new method for measuring the visceral fat area (VFA) by combining abdominal bioelectrical impedance analysis (BIA) with measurement of waist circumference (WC), but very few methodological details were provided. Furthermore, the study did not test the use of WC alone as an indicator of VFA even though others had previously reported a strong correlation. We sought to determine the optimal measurement technique and analysis for measuring VFA by abdominal BIA and WC. 18 volunteers (age 23–64 years) underwent measurement of WC, abdominal impedance (Bodystat 500 four-electrode system) and a single cross-sectional CT scan at the umbilicus. VFA derived using WC3 and measurements of abdominal impedance from electrode pairs sited at the flank predicted the value of VFA measured by CT with correlation r = 0.904 (p 1.9 alone, without involving BIA at all, provided a similar correlation (r = 0.923). Our small preliminary study shows that abdominal BIA is potentially a practicable non-invasive technique for measurement of VFA but casts doubt on whether it adds any value to the use of WC alone. Larger studies are now required to test this finding. (note)

185

BIOELECTRICAL IMPEDANCE VECTOR ANALYSIS IDENTIFIES SARCOPENIA IN NURSING HOME RESIDENTS  

Science.gov (United States)

Loss of muscle mass and water shifts between body compartments are contributing factors to frailty in the elderly. The body composition changes are especially pronounced in institutionalized elderly. We investigated the ability of single-frequency bioelectrical impedance analysis (BIA) to identify b...

186

Body composition in heavy smokers: comparison of segmental bioelectrical impedance analysis and dual-energy X-ray absorptiometry.  

Science.gov (United States)

Smokers tend to have lower body mass index, on one hand, and increased abdominal obesity, on the other hand. Also, low levels of lean mass (LM) and bone mineral content (BMC) were found among older smokers compared with non-smokers. This altered body composition and its consequences raise the need for simple and reliable methods for assessment of body composition in smokers. This study aimed to compare body composition assessment by segmental bioelectrical impedance analysis (sBIA) with the reference method, dual energy X-ray absorptiometry (DEXA). Body composition was measured by sBIA (Tanita BC-545) and DEXA (Hologic) in 49 heavy smokers (>15 cigarettes/day, mean age 43.8±12.0). The comparison included correlations and differences between measurements obtained using the two methods as well as the Blande-Altman analysis. Whole-body fat mass (FM) and LM measured by the two methods were found to be highly correlated (r>0.9, pgood agreement for whole-body FM and LM, but a poor agreement for BMC. The segmental FM percentage and LM were also highly correlated (r>0.9, p<0.001). However, sBIA significantly overestimated LM of the trunk and legs and underestimated the appendicular FM percentage. Verified by DEXA, sBIA provides reliable measures of whole-body LM, FM, and trunk FM in heavy smokers. A lesser degree of agreement was found for BMC, appendicular LM, and FM. PMID:25315614

Rom, O; Reznick, A Z; Keidar, Z; Karkabi, K; Aizenbud, D

2015-01-01

187

75 FR 57976 - Designation of Service Area for Confederated Tribes of the Warm Springs of Oregon  

Science.gov (United States)

...Oregon, Warm Springs, Oregon (Warm Springs Tribe) for financial...SUPPLEMENTARY INFORMATION: The Warm Springs Tribe submitted to BIA...expand the service area for the Warm Springs Tribe to include Hood...the new service area by setting up bi-weekly office hours at...

2010-09-23

188

Electrodeposition of Zirconium from DMSO Solution  

Directory of Open Access Journals (Sweden)

Full Text Available W pracy przedstawiono badania woltamperometryczne procesu elektroosadzania cyrkonu z roztworu DMSO na ró?nych pod?o?ach. Stwierdzono, ?e jest to procees wieloelektronowy zachodz?cy w kilku etapach. Ponadto otrzymano warstwy cyrkonu na tytanie, miedzi, stali kwasoodpornej i niklu. Wytworzony osad katodowy mia? form? bia?ego proszku, na skutek natychmiastowego utlenienia cyrkonu w kontakcie z powietrzem.

Simka W.

2014-06-01

189

American Indian Standards for Arts Education.  

Science.gov (United States)

The Bureau of Indian Affairs (BIA) developed 30 American Indian content standards for arts education, based on the 1994 U.S. national content standards. Like the national standards, they are intended to apply across all grade levels (K-12) and are divided into the four arts disciplines of dance, music, theater, and visual arts. The purpose of…

Bureau of Indian Affairs (Dept. of Interior), Washington, DC. Office of Indian Education Programs.

190

New Deal Experimentation and the Political Economy of the Yankton Sioux, 1930-1934  

Science.gov (United States)

Franklin Delano Roosevelt's election to the presidency in 1932 signaled a mandate for sweeping reform at the federal level to lift the nation out of the economic turbulence of the Great Depression. Under Commissioner of Indian Affairs John Collier, the Bureau of Indian Affairs (BIA) joined other agencies in launching policies to rebuild economic…

Houser, Teresa M.

2011-01-01

191

A Guide to the Rights of the American Indian to Food Programs -- In Federal Schools for American Indian Children and in Public Schools Subsidized by the Bureau of Indian Affairs.  

Science.gov (United States)

Written for all American Indians and Alaska Natives, this guide is designed to provide information relative to the Native American's rights to food programs in Federal schools and in public schools subsidized by the Bureau of Indian Affairs (BIA). Aimed at stimulating Native Americans to assume a more active role in the development and assessment…

Lukaczer, Moses; And Others

192

25 CFR 170.414 - How is the tribal long-range transportation plan used and updated?  

Science.gov (United States)

...updated? The tribal government uses its IRR long-range transportation plan in its development of a tribal priority list or TTIP. To be consistent with State and MPO planning practices, the tribe or BIA (for direct service tribes) should: (a)...

2010-04-01

193

Effect of physical training on body composition in Moscow adolescents.  

Science.gov (United States)

The influence of physical activity on body mass components has been studied using a sample of Moscow children. 195 girls and 259 boys of Russian ethnicity from 12 to 17 years old were investigated cross-sectionally in 2005 in different Moscow schools. According to the level of physical activity they were divided into three groups: 1-those who did not take part in regular physical exercise (44 boys and 50 girls); 2-those who took part in special sports programs in general education schools (82 boys and 82 girls); 3-students of special sports schools with a high sports ranking (133 boys and 63 girls). The program included anthropometric measurements, evaluation of sexual maturation indices, somatotypes, and "functional" traits (diastolic and systolic blood pressure, pulse rate, hand grip, etc). For the study of body composition, bioelectrical impedance analysis (BIA) was used. The estimates of body mass components were also calculated using the anthropometric measurements. For the fat component, the estimates obtained by BIA and the anthropometric methods were highly correlated: r=0.85-0.88. Age changes of BIA measurements and body components were analysed. With multiple regression analysis it was shown that BIA measurements are dependent on a great number of morphological and functional traits, with the most informative sets of traits being selected. The degree of physical activity has a strong effect on body components: the contents of fat-free mass (FFM) and total body water (TBW) significantly increase, and the fat mass (FM) in girls decreases. PMID:17435370

Godina, Elena; Khomyakova, Irena; Purundzhan, Arsen; Tretyak, Anna; Zadorozhnaya, Ludmila

2007-03-01

194

Comprehensive Implementation Processes for Special Education Services in the Bureau of Indian Affairs with Public Law 94-142 Compliances: Conference Proceedings (Albuquerque, New Mexico, November 8-12, 1976).  

Science.gov (United States)

Designed as a reference book, this publication reflects the efforts of almost 100 American Indian parents, educators, diagnosticians, social workers, etc., and representatives from each of the Bureau of Indian Affairs (BIA) Area Offices in attendance at the 1976 conference on the comprehensive implementation process for special education services…

Moore, Jean J., Comp.

195

Indian Education. Hearings Before the Subcommittee on Elementary, Secondary and Vocational Education of the Committee on Education and Labor, House of Representatives, 95th Congress, 1st Session (February 1 and 2, 1977).  

Science.gov (United States)

The Subcommittee focused its 1-2 February 1977 hearings on the educational activity of the Bureau of Indian Affairs (BIA), as the beginning of an effort to obtain an accurate picture of the current state of educational programs dealing with Indians and the development of ways to improve both the programs and their delivery. On 1 February a panel…

Congress of the U.S., Washington, DC. House Committee on Education and Labor.

196

Phoenix Indian School. Oversight Hearings on Phoenix Indian School before the Committee on Interior and Insular Affairs. House of Representatives, One Hundredth Congress, First Session (Phoenix, AZ, February 13, 1987; Washington, DC, July 30, 1987).  

Science.gov (United States)

Since 1891, Phoenix Indian High School has served as a boarding school for Indian students. In February 1987, the Bureau of Indian Affairs (BIA) recommended that the school be closed, and that students be transferred to Sherman Indian School in Riverside, California. Congressional hearings in February and July 1987 received testimony on this…

Congress of the U.S., Washington, DC. House Committee on Interior and Insular Affairs.

197

25 CFR 12.62 - Who decides what uniform an Indian country law enforcement officer can wear and who pays for it?  

Science.gov (United States)

Each local law enforcement program must establish its own uniform requirements for patrol and detention personnel. Uniformed BIA police officers may be paid an annual uniform allowance not to exceed $400. Local programs may provide uniforms and related equipment to officers in lieu of this...

2010-04-01

198

77 FR 39726 - Land Acquisitions: Pueblo of Santa Clara  

Science.gov (United States)

...Indian Affairs, 1001 Indian School Road NW., Albuquerque, NM 87104-2303; Telephone (505) 563-3337, sandy.ray@bia...San Ildefonso Claims Settlement Act of 2005 (Pub. L. 109-286) dated September 27, 2006. The acres are described as...

2012-07-05

199

Biosíntesis de alcaloides bencilisoquinolínicos  

Directory of Open Access Journals (Sweden)

Full Text Available Benzylisoquinoline alkaloid biosynthesis. The benzylisoquinoline alkaloids (BIA are specialized metabolites with an ancient phylogeneticdistribution, but still preserved in modern clades. Some of them, such as morphine, sanguinerine or berberine, are important for modernmedicine. This review discusses the highlights of the current state of the biosynthesis of BIA. There have been studies that show thebiosynthesis of 22 of these nitrogenous metabolites. In their formation there are 43 enzymes grouped into oxidoreductases, transferasesand lyases, which in some cases represent atypical examples of the manner in which the secondary metabolism diversification wasoriginated. Two of these examples are the cytochrome proteins P450 (P450, with catalytic activities for ABI route, or the norcoclaurinesynthase enzyme (NCS, which share substantial identity with defense allergenic proteins. Likewise, there are genetic advances thathave produced the characterization of 30 enzymes, allowing knowledge of regulatory processes. Another interesting aspect is thecompartmentation of the biosynthesis sites and accumulation of BIA, since in several cases they are spatially separated and in differentspecies, or in the same species several types of cells may be involved. This has suggested intra and intercellular transport of alkaloids,precursors and enzymes, and it has been documented berberine transport between the cytoplasm and the vacuoles of storage. The picturefor the biosynthesis of BIA has been constructed with exemplary studies of alkaloids with pharmacological importance.

Christian Anabí Riley-Saldaña

2012-08-01

200

77 FR 41168 - Endangered and Threatened Species; Take of Anadromous Fish  

Science.gov (United States)

...Bureau of Indian Affairs (BIA) on behalf of the Nez Perce Tribe (NPT). The proposed permits would expire on December 31...operations to be permitted would be carried out at the Nez Perce Tribal Hatchery, and at Lyons Ferry, Oxbow, and...

2012-07-12

201

25 CFR 170.117 - How can a tribe determine whether a new use of funds is allowable?  

Science.gov (United States)

...The tribe must also provide a copy of its inquiry to FHWA. (1) In cases involving eligibility questions...Program or 23 U.S.C., BIA will refer an inquiry to FHWA for decision. FHWA must provide a written response to the...

2010-04-01

202

Paleoecological interpretation of a Holocene sand body in the coastal area of Phetchaburi, Gulf of Thailand  

Directory of Open Access Journals (Sweden)

Full Text Available Faunal examination is made of 4 samples, 2 from the Recent Ban Laem Phak Bia sand spit, and 2 from the Holocene sand body of Ban Bang Ket. Fossil and modern assemblages are compared on the basis of overall composition, taxa abundances, and of autoecological investigation on life habit, substrate preference, feeding type, depth range and ecological meaning of the identified species. The Holocene assemblage of Ban Bang Ket, compared to the Recent one of Ban Laem Phak Bia, 1 exhibits generally similar overall composition and ecological structure, 2 contains much of the dominant species characterizing the modern assemblage, and 3includes all taxa that are members of the living molluscan community. On this basis, the molluscan assemblage of Ban Bang Ket results to be the Holocene counterpart of the modern one of Ban Laem Phak Bia, and reflects the same environmental conditions recorded for the latter. Thus, the sand body near Ban Bang Ket is interpreted as a Holocene equivalent of the sand spit of Ban Laem Phak Bia.

Elio Robba

2005-10-01

203

Quantitative analysis of skeletal muscle mass in patients with rheumatic diseases under glucocorticoid therapy - Comparison among bioelectrical impedance analysis, computed tomography, and magnetic resonance imaging.  

Science.gov (United States)

Abstract Objectives. To determine the availability of bioelectrical impedance analysis (BIA), computed tomography (CT), and magnetic resonance imaging (MRI) for measurement of skeletal muscle mass in patients with rheumatic diseases and quantitatively assess skeletal muscle loss after glucocorticoid (GC) treatment. Methods. The data from 22 patients with rheumatic diseases were retrospectively obtained. The muscle mass of body segments was measured with a BIA device in terms of skeletal muscle mass index (SMI). Cross-sectional area (CSA) was obtained from CT and MRI scans at the mid-thigh level using the image analysis program. We further assessed the data of three different measurements before and after GC treatment in 7 patients with rheumatic diseases. Results. SMI of whole body was significantly correlated with estimated muscle volume and mid-thigh muscle CSA with CT and MRI (p body after GC treatment, but not in SMI of each leg. On the other hand, significant correlations between mid-thigh muscle CSA with CT and MRI were found before and after GC treatment (p < 0.01). Conclusions. GC-related skeletal muscle loss could be quantitatively assessed with BIA, CT, or MRI in patients with rheumatic diseases, and CT and MRI appeared to be more accurate than BIA. PMID:25496410

Hosono, Osamu; Yoshikawa, Noritada; Shimizu, Noriaki; Kiryu, Shigeru; Uehara, Masaaki; Kobayashi, Hiroshi; Matsumiya, Ryo; Kuribara, Akiko; Maruyama, Takako; Tanaka, Hirotoshi

2015-03-01

204

Percent body fat estimations in college women using field and laboratory methods: a three-compartment model approach  

Directory of Open Access Journals (Sweden)

Full Text Available Abstract Background Methods used to estimate percent body fat can be classified as a laboratory or field technique. However, the validity of these methods compared to multiple-compartment models has not been fully established. This investigation sought to determine the validity of field and laboratory methods for estimating percent fat (%fat in healthy college-age women compared to the Siri three-compartment model (3C. Methods Thirty Caucasian women (21.1 ± 1.5 yrs; 164.8 ± 4.7 cm; 61.2 ± 6.8 kg had their %fat estimated by BIA using the BodyGram™ computer program (BIA-AK and population-specific equation (BIA-Lohman, NIR (Futrex® 6100/XL, a quadratic (SF3JPW and linear (SF3WB skinfold equation, air-displacement plethysmography (BP, and hydrostatic weighing (HW. Results All methods produced acceptable total error (TE values compared to the 3C model. Both laboratory methods produced similar TE values (HW, TE = 2.4%fat; BP, TE = 2.3%fat when compared to the 3C model, though a significant constant error (CE was detected for HW (1.5%fat, p ? 0.006. The field methods produced acceptable TE values ranging from 1.8 – 3.8 %fat. BIA-AK (TE = 1.8%fat yielded the lowest TE among the field methods, while BIA-Lohman (TE = 2.1%fat and NIR (TE = 2.7%fat produced lower TE values than both skinfold equations (TE > 2.7%fat compared to the 3C model. Additionally, the SF3JPW %fat estimation equation resulted in a significant CE (2.6%fat, p ? 0.007. Conclusion Data suggest that the BP and HW are valid laboratory methods when compared to the 3C model to estimate %fat in college-age Caucasian women. When the use of a laboratory method is not feasible, NIR, BIA-AK, BIA-Lohman, SF3JPW, and SF3WB are acceptable field methods to estimate %fat in this population.

Dalbo Vincent J

2007-11-01

205

Study and classification of the abdominal adiposity throughout the application of the two-dimensional predictive equation Garaulet et al., in the clinical practice Estudio y clasificación de la adiposidad abdominal mediante la aplicación de la ecuación predictiva bidimensional de Garaulet et al., en la práctica clínica  

Directory of Open Access Journals (Sweden)

Full Text Available Introduction: The excess of visceral abdominal adipose tissue is one of the major concerns in obesity and its clinical treatment. Objective: To apply the two-dimensional predictive equation proposed by Garaulet et al. to determine the abdominal fat distribution and to compare the results with the body composition obtained by multi-frequency bioelectrical impedance analysis (M-BIA. Subjects/methods: We studied 230 women, who underwent anthropometry and M-BIA. The predictive equation was applied. Multivariate lineal and partial correlation analyses were performed with control for BMI and % body fat, using SPSS 15.0 with statistical significance P Introducción: El exceso de tejido adiposo abdominal visceral es una de las mayores preocupaciones en la obesidad y su tratamiento clínico. Objetivo: Aplicar la ecuación predictiva bidimensional propuesta por Garaulet et al., para determinar la distribución de la grasa abdominal y comparar los resultados con la composición corporal obtenida mediante el análisis de impedancia bioeléctrica multi-frecuencia (M-BIA. Sujetos/métodos: Estudiamos a 230 mujeres a las que se sometió a antropometría y M-BIA. Se aplicó la ecuación predicitiva. Se realizaron correlaciones lineales multivariadas y parciales controlando el IMC y el % de grasa corporal, utilizando SPSS 15.0 con significación estadística P < 0,05. Resultados: En global, se consideró que las mujeres tenían una distribución subcutánea de la grasa abdominal. La grasa troncal, regional y la masa muscular se asociaron negativamente con VA/SApredicted, mientras que le índice visceral obtenido mediante M-BIA se correlacionó positivamente con VA/SApredicted. Discusión/conclusión: La ecuación predictiva puede ser útil en la práctica clínica para obtener una clasificación segura, barata y precisa de la obesidad abdominal.

C. M.ª Piernas Sánchez

2010-04-01

206

A stochastic post-processing method for solar irradiance forecasts derived from NWPs models  

Science.gov (United States)

Solar irradiance forecast is an important area of research for the future of the solar-based renewable energy systems. Numerical Weather Prediction models (NWPs) have proved to be a valuable tool for solar irradiance forecasting with lead time up to a few days. Nevertheless, these models show low skill in forecasting the solar irradiance under cloudy conditions. Additionally, climatic (averaged over seasons) aerosol loading are usually considered in these models, leading to considerable errors for the Direct Normal Irradiance (DNI) forecasts during high aerosols load conditions. In this work we propose a post-processing method for the Global Irradiance (GHI) and DNI forecasts derived from NWPs. Particularly, the methods is based on the use of Autoregressive Moving Average with External Explanatory Variables (ARMAX) stochastic models. These models are applied to the residuals of the NWPs forecasts and uses as external variables the measured cloud fraction and aerosol loading of the day previous to the forecast. The method is evaluated for a set one-moth length three-days-ahead forecast of the GHI and DNI, obtained based on the WRF mesoscale atmospheric model, for several locations in Andalusia (Southern Spain). The Cloud fraction is derived from MSG satellite estimates and the aerosol loading from the MODIS platform estimates. Both sources of information are readily available at the time of the forecast. Results showed a considerable improvement of the forecasting skill of the WRF model using the proposed post-processing method. Particularly, relative improvement (in terms of the RMSE) for the DNI during summer is about 20%. A similar value is obtained for the GHI during the winter.

Lara-Fanego, V.; Pozo-Vazquez, D.; Ruiz-Arias, J. A.; Santos-Alamillos, F. J.; Tovar-Pescador, J.

2010-09-01

207

Source apportionment of elevated wintertime PAHs by compound-specific radiocarbon analysis  

Directory of Open Access Journals (Sweden)

Full Text Available Natural abundance radiocarbon analysis facilitates distinct source apportionment between contemporary biomass/biofuel (14C "alive" versus fossil fuel (14C "dead" combustion. Here, the first compound-specific radiocarbon analysis (CSRA of atmospheric polycylic aromatic hydrocarbons (PAHs was demonstrated for a set of samples collected in Lycksele, Sweden a small town with frequent episodes of severe atmospheric pollution in the winter. Renewed interest in residential wood combustion means than this type of seasonal pollution is of increasing concern in many areas. Five individual/paired PAH isolates from three pooled fortnight-long filter collections were analyzed by CSRA: phenanthrene, fluoranthene, pyrene, benzo[b+k]fluoranthene and indeno[cd]pyrene plus benzo[ghi]perylene; phenanthrene was the only compound also analyzed in the gas phase. The measured ?14C for PAHs spanned from ?138.3‰ to 58.0‰. A simple isotopic mass balance model was applied to estimate the fraction biomass (fbiomass contribution that was constrained to a range of 71% for indeno[cd]pyrene+benzo[ghi]perylene to 87% for the gas phase phenanthrene and particulate fluoranthene, respectively. Indeno[cd]pyrene plus benzo[ghi]perylene, known to be enhanced in gasoline-powered motor vehicle exhaust compared to diesel exhaust, had the lowest contribution of biomass combustion of the measured PAHs by 9%. The total organic carbon (TOC, defined as carbon remaining after removal of inorganic carbon fbiomass was estimated to be 77%, which falls within the range for PAHs. This CSRA data of atmospheric PAHs demonstrate the non-uniformity of biomass combustion contribution to different PAHs even in a location with limited local emission sources and illustrates that regulatory efforts would not evenly reduce all PAHs.

R. J. Sheesley

2008-12-01

208

Parameterization of instantaneous global horizontal irradiance: Cloudy-sky component  

Science.gov (United States)

Radiation calculations in global numerical weather prediction (NWP) and climate models are usually conducted in 3-hourly time interval in order to reduce the computational cost. This treatment can lead to an incorrect solar radiation at the Earth's surface which could be one of the error sources in modeled convection and precipitation. In order to improve the simulation of the diurnal cycle of solar radiation a fast scheme has been developed based on detailed radiative transfer calculations for a wide range of atmospheric conditions and can be used to determine the surface solar radiation at each model integration time step with affordable costs. This scheme is divided into components for clear-sky and cloudy-sky conditions. The clear-sky component has been described in a companion paper. The cloudy-sky component is introduced in this paper. The input variables required by this scheme are all available in NWP and climate models or can be obtained from satellite observations. Therefore, the scheme can be used in a global model to determine the surface GHI. It can also be used as an offline scheme to calculate the surface GHI using data from satellite measurements. SUNFLUX scheme has been tested using observations obtained from three Atmospheric Radiation Measurements (ARM) stations established by the U. S. Department of Energy. The results show that a half hourly mean relative error of GHI under all-sky conditions is less than 7%. An important application of the scheme is in global climate models. The radiation sampling error due to infrequent radiation calculations is investigated using the SUNFLUX and ARM observations. It is found that errors in the surface net solar irradiance are very large, exceeding 800 W m-2at many non-radiation time steps due to ignoring the effects of clouds. Use of the SUNFLUX scheme can reduce these errors to less than 50 W m-2.

Sun, Z.; Liu, J.; Zeng, X.; Liang, H.

2012-07-01

209

Health policy for the poor: An exploration on the take-up of means-tested health benefits in Turkey.  

Science.gov (United States)

Recent healthcare reform in Turkey aims at achieving universal coverage with the introduction of General Health Insurance (GHI). As part of GHI, the state assumes the provision of health insurance coverage to those unable to afford the public health insurance premiums conditional on a means-testing procedure where the official threshold is set as one-third of the gross minimum wage. This article aims at exploring in Turkey the prevalence of non-take up of means-tested health insurance for the poor and the consequent financial burdens for those poor segments outside the coverage. Based upon Statistics of Income and Living Conditions micro data, the non-take-up rate is estimated to be around 44%, where the prevalence of non-take-up is lower yet still high, i.e. around 30%, for households with very low incomes as well as those with elderly or ill members. The results from a separate health expenditure survey on urban poor, which is specifically designed and implemented by the authors, reveal that poor households without health insurance coverage are faced with significant out-of-pocket expenditures. About 5% of those households without coverage were found to have inpatient expenditures that exceeded 20% of their annual disposable household income. Also, among the households without coverage but with at least one inpatient visit over the last two years, the median expenditure was reported as high as 8% of the annual household income as opposed to 0% median value for those with GHI. The results highlight that a large proportion of poor population still lacks public health insurance despite the overarching aim of universal coverage. PMID:25689667

Erus, Burcay; Yakut-Cakar, Burcu; Cali, Sanda; Adaman, Fikret

2015-04-01

210

Analysis and Prediction of Energy Production in Concentrating Photovoltaic (CPV Installations  

Directory of Open Access Journals (Sweden)

Full Text Available A method for the prediction of Energy Production (EP in Concentrating Photovoltaic (CPV installations is examined in this study. It presents a new method that predicts EP by using Global Horizontal Irradiation (GHI and the Photovoltaic Geographical Information System (PVGIS database, instead of Direct Normal Irradiation (DNI data, which are rarely recorded at most locations. EP at four Spanish CPV installations is analyzed: two are based on silicon solar cells and the other two on multi-junction III-V solar cells. The real EP is compared with the predicted EP. Two methods for EP prediction are presented. In the first preliminary method, a monthly Performance Ratio (PR is used as an arbitrary constant value (75% and an estimation of the DNI. The DNI estimation is obtained from GHI measurements and the PVGIS database. In the second method, a lineal model is proposed for the first time in this paper to obtain the predicted EP from the estimated DNI. This lineal model is the regression line that correlates the real monthly EP and the estimated DNI in 2009. This new method implies that the monthly PR is variable. Using the new method, the difference between the predicted and the real EP values is less than 2% for the annual EP and is in the range of 5.6%–16.1% for the monthly EP. The method that uses the variable monthly PR allows the prediction of the EP with reasonable accuracy. It is therefore possible to predict the CPV EP for any location, using only widely available GHI data and the PVGIS database.

Allen Barnett

2012-03-01

211

Performance of Low and Medium Concentrating Systems in Pakistan  

Science.gov (United States)

A comparison study has been conducted in Hattar Pakistan to evaluate the kWhr/kWp yield from four different technologies namely Fixed silicon flat plate, Tracked silicon flat plate, Tracked 4x with one sun silicon cells and Tracked 120x with silicon LGBC cells. Global horizontal (GHI), Global normal (GNI) and Direct normal (DNI) incidence insolation data was measured simultaneously. The effect of dust build up was measured. The fixed flat plate system gave the lowest kWhr/kWp output while the Tracked flat plate and 4x system were broadly similar.

Mughal, Humayun A.

2011-12-01

212

Transfection by genomic DNA of cytochrome P1-450 enzymatic activity and inducibility.  

OpenAIRE

An aryl hydrocarbon hydroxylase (AHH)-deficient gene A- mutant of the mouse line Hepa-1 was treated with calcium phosphate precipitates of DNA from Hepa-1, the rat line H4IIEC3, or an A- -human hybrid in which the A- mutation is complemented by the corresponding human gene. AHH+ transfectants were isolated by selection with benzo[ghi]perylene plus near UV. In addition, a gene A- mutant which also carries a mutation for hypoxanthine phosphoribosyltransferase deficiency was treated with the abo...

Montisano, D. F.; Hankinson, O.

1985-01-01

213

Solar Radiometric Data Quality Assessment of SIRS, SKYRAD and GNDRAD Measurements (Poster)  

Energy Technology Data Exchange (ETDEWEB)

Solar radiation is the driving force for the earth's weather and climate. Understanding the elements of this dynamic energy balance requires accurate measurements of broadband solar irradiance. Since the mid-1990's the ARM Program has deployed pyrheliometers and pyranometers for the measurement of direct normal irradiance (DNI), global horizontal irradiance (GHI), diffuse horizontal irradiance (DHI), and upwelling shortwave (US) radiation at permanent and mobile field research sites. This poster summarizes the basis for assessing the broadband solar radiation data available from the SIRS, SKYRAD, and GNDRAD measurement systems and provides examples of data inspections.

Habte, A.; Stoffel, T.; Reda, I.; Wilcox, S.; Kutchenreiter, M.; Gotseff, P.; Anderberg, M.

2014-03-01

214

THE COST OF FOOD SECURITY VS. THE COST OF 'NO FOOD SECURITY’  

OpenAIRE

Widespread Hunger and Malnutrition is highly prevalent in India. It should be a subject of shame for every Indian. The cost benefit analysis of National Food Security Bill has been attempted in this paper. Is this a necessity for the economy like India where widespread Hunger and malnutrition is a major problem? According to GHI India's rank is 63rd out of 78 countries. Different cost estimates of Food Security Bill and the cost of 'no food security' have been compared.FSB is ...

Harvinder Kaur; Swati Billus

2014-01-01

215

Influence of Cadmium and Mercury on Activities of Ligninolytic Enzymes and Degradation of Polycyclic Aromatic Hydrocarbons by Pleurotus ostreatus in Soil  

OpenAIRE

The white-rot fungus Pleurotus ostreatus was able to degrade the polycyclic aromatic hydrocarbons (PAHs) benzo[a]anthracene, chrysene, benzo[b]fluoranthene, benzo[k]fluoranthene, benzo[a]pyrene, dibenzo[a,h]anthracene, and benzo[ghi]perylene in nonsterile soil both in the presence and in the absence of cadmium and mercury. During 15 weeks of incubation, recovery of individual compounds was 16 to 69% in soil without additional metal. While soil microflora contributed mostly to degradation of p...

Baldrian, Petr; In Wiesche, Carsten; Gabriel, Jir?i?; Nerud, Frantis?ek; Zadraz?il, Frantis?ek

2000-01-01

216

Comparação do percentual de gordura obtido por bioimpedância, ultrassom e dobras cutâneas em adultos jovens / Comparison of the fat percentage obtained by bioimpedance, ultrasound and skinfolds in young adults  

Scientific Electronic Library Online (English)

Full Text Available OBJETIVO: Comparar o ultrassom (US) portátil e a bioimpedância elétrica (BIA) com as dobras cutâneas (DC) para estimar o percentual de gordura corporal em adultos. MÉTODOS: Foram avaliadas 195 militares, sexo masculino, sendo coletados: peso, estatura, percentual de gordura por bioimpedância, dobras [...] cutâneas e ultrassom (US) em nove pontos (tríceps, subescapular, bíceps, peitoral, médio axilar, abdominal, suprailíaca, coxa e panturrilha). Além da estatística descritiva, foram utilizados gráficos de dispersão, o teste Kolmogorov-Smirnov, coeficiente de correlação ? (rho) de Spearman, o Wilcoxon Signed Ranks Test e a regressão linear para a elaboração de uma nova equação para a estimativa do percentual de gordura corporal em adultos jovens (do sexo masculino). RESULTADOS: O grupo apresentou idade média de 23,07 ± 7,55 anos, para peso e estatura os valores da média e desvio padrão foram: 72,65 ± 10,40 kg; 1,74 ± 0,06 metros, respectivamente. Comparando os resultados entre US e DC, verificaram-se correlações significativas para todos os pontos avaliados, sendo a prega da coxa a com maior correlação, seguida pelo peitoral. Comparando-se os três métodos, o US apresentou melhor correlação com a BIA do que com as DC. Pode-se propor uma nova equação de estimativa do percentual de gordura por US, que apresentou uma melhor correlação com o método das DC do que aquela utilizada pelo próprio equipamento. CONCLUSÃO: Foi possível verificar que na população estudada o US e a BIA podem estimar o percentual de gordura corporal com boas correlações com o método da DC. Abstract in english INTRODUCTIONS E OBJECTIVE: To compare portable ultrasound (US) and bioimpedance analysis (BIA) with skinfolds (SF) to estimate body fat percentage in adults. METHODS: 195 military men were assessed and they had their weight, height, body fat by bioimpedance, skinfold in 9 points and ultrasound (US) [...] collected. Linear Regression was used for the development of a new equation for body fat percentage estimation in young adults (males). RESULTS: The group had mean age of 23.07 ± 7.55 years and height and weight with mean and standard deviation of 72.65 ± 10.40 kg, 1.74 ± 0.06 meters, respectively. Comparing the results between the US and SF, there was significant correlation for all points evaluated, with the thigh skinfold presenting the highest correlation, followed by the chest one. When the three methods are compared, the US presented better correlation with the BIA than with SF. A new equation for estimation of fat percentage by US can hence be proposed. CONCLUSIONS: It was noticed that in the studied population, US and BIA can estimate the body fat percentage with good correlations with the SF method.

Eduardo Borba, Neves; Wagner Luis, Ripka; Leandra, Ulbricht; Adriana Maria Wan, Stadnik.

2013-10-01

217

'Health transformation programme' in Turkey: an assessment.  

Science.gov (United States)

The aim of this study is to assess the 'Health Transformation Programme' (HTP) in Turkey announced in 2003. This assessment has been made according to the ultimate performance goals of a health care system, such as improvement in health status, financial risk protection and satisfaction with health care. This study provides a brief history of health policy since 1980, when the Turkish health care system began to transform with the introduction of both structural adjustment and market-oriented reform policy. The main aim of these reforms was increasing efficiency. Reform proposals of the 1990s focused on the introduction of a general health insurance (GHI) system, decentralization, introduction of a family medicine scheme, purchaser-provider split, contracting-out, quasi-markets and improvement of management information systems. Like the reform proposals of the 1990s, HTP has eight components, the major ones being a new role for the Ministry of Health (MoH), introduction of a GHI system, reorganization of health service delivery and human resources development. No component of HTP has yet been sufficiently realized. Therefore, despite some improvements, Turkish people continue to face low health status and a low level of financial risk protection. More research needs to be done for the determination of satisfaction with health services. PMID:21674612

Yasar, Gulbiye Yenimahalleli

2011-01-01

218

The phenazine pyocyanin is a terminal signalling factor in the quorum sensing network of Pseudomonas aeruginosa.  

Science.gov (United States)

Certain members of the fluorescent pseudomonads produce and secrete phenazines. These heterocyclic, redox-active compounds are toxic to competing organisms, and the cause of these antibiotic effects has been the focus of intense research efforts. It is largely unknown, however, how pseudomonads themselves respond to - and survive in the presence of - these compounds. Using Pseudomonas aeruginosa DNA microarrays and quantitative RT-PCR, we demonstrate that the phenazine pyocyanin elicits the upregulation of genes/operons that function in transport [such as the resistance-nodulation-cell division (RND) efflux pump MexGHI-OpmD] and possibly in redox control (such as PA2274, a putative flavin-dependant monooxygenase), and downregulates genes involved in ferric iron acquisition. Strikingly, mexGHI-opmD and PA2274 were previously shown to be regulated by the PA14 quorum sensing network that controls the production of virulence factors (including phenazines). Through mutational analysis, we show that pyocyanin is the physiological signal for the upregulation of these quorum sensing-controlled genes during stationary phase and that the response is mediated by the transcription factor SoxR. Our results implicate phenazines as signalling molecules in both P. aeruginosa PA14 and PAO1. PMID:16879411

Dietrich, Lars E P; Price-Whelan, Alexa; Petersen, Ashley; Whiteley, Marvin; Newman, Dianne K

2006-09-01

219

Pre- and syn-Ross orogenic granitoids at Drake Head and Kartografov Island, Oates Coast, northern Victoria Land, East Antarctica  

International Nuclear Information System (INIS)

The majority of the Oates Coast, northern Victoria Land granitoids, typified by those at Drake Head and Kartografov Island (Harald Bay), are monzogranites with lesser granodiorites and minor quartz-monzodiorite and syenogranite. All are plagioclase-K-feldspar-biotite granitoids with additional muscovite, garnet and/or hornblende, and are subalkaline and peraluminous. Berg Granite typifies the early Ordovician, Granite Harbour Instrusive (GHI) suite of the Ross Orogen at the Oates Coast. Granitoids from Kartografov Island have higher amounts of Fe+Mg+Ti and an ambiguous Rb-Sr geochronology: they could be either pre-Ross Orogeny in age, or syn-Ross Orogeny and representing a lower structural level of GHI. The Drake Head granite gneiss has a fractionated leuco-granite composition similar to Berg Granite, and is intruded by granite and granodiorite. Rb-Sr ages indicate that all are Neoproterozoic, although the granite gneiss result is probably an errorchron age, reflecting its less uniform nature (granodiorite:649 ± 30 Ma, initial ratio 0.7065 +/- 6; granite gneiss: 682 ± 140 Ma, initial ratio 0.7107 ± 50). These late Neoproterozoic granitoids provide a source for distinctive detrital zircon age components in extensive early Paleozoic turbidites of Australia-New Zealand-Antarctica. (author). 24 refs., 5 figs., 1 tab

220

Direct mutagenicity of the polycylic aromatic hydrocarbon-containing fraction of smoked and charcoal-broiled foods treated with nitrite in acid solution.  

Science.gov (United States)

The polycyclic aromatic hydrocarbons (PAH) containing fractions of smoked and charcoal-broiled foods, namely, Sheat fish (Kytopterus apogon), Mimrow (Crossocheilus reba), Freshwater catfish (Clarias batrachus), chicken wings, rice pork sausage and pork, in addition to naphthalene, acenaphthene, anthracene, phenanthrene, fluoranthene, pyrene, benz[a]anthracene, naphthacene, benzo[a]pyrene, benzo[e]pyrene, 9,10-dimethyl-1,2-benzanthracene, dibenz[ah]anthracene, benzo[ghi]perylene and coronene, were evaluated for their mutagenic potential using Salmonella typhimurium strains TA98 and TA100 in the absence of metabolic activation after being treated with nitrite (500 mM) for 4 hr at 37 degrees C and in acid solution pH 3.0-3.5. The presence of N-nitroso compounds was also determined. Results showed that nitrite could convert most samples to direct-acting mutagens towards both strains except for fluoranthene and benzo[ghi]perylene, which exhibit mutagenicity only with TA98. It was demonstrated that treatment of PAHs with nitrite in acid solution produced some non-N-nitroso direct-acting mutagens, suggesting that they might belong to nitro-PAHs. Therefore, the consumption of charcoal-broiled and smoked foods simultaneously with nitrite is not recommended. PMID:9146734

Kangsadalampai, K; Butryee, C; Manoonphol, K

1997-02-01

221

Genetic variation of dry matter and nitrogen accumulation of double haploid wheat lines  

International Nuclear Information System (INIS)

The study considers the genotype peculiarities in the dynamics of dry matter and nitrogen accumulation in plant parts during the different stages of 10 DH wheat lines characterized as initial breeding material of high quality. These were obtained from 2 crosses - 7-P2 - 11 x H-81/32-4 and 7-P2 - 11 x H-81/32-24. Considerable genotype variations were established both between the lines and the parental forms, and in comparison to the standard quality variety Slavyanka-196. Lines 41-191 and 41-344 are of special interest because of their high grain yield and high intensity of biomass accumulation (kg/dka/day) and high intensity of nitrogen uptake (g/dka/day) mainly in the second half of the grain filling period. These fines stand out among the new DH fines with their high protein yields. In line 41-181 the ratio NHI/GHI changes positively with a high degree of certainty in both phases of grain maturity. This line is characterized with the highest value of nitrogen (mg) in vegetation mass per unit mature grain. A positive correlation was established between the NHI/GHI ratio and protein content in grain. Line 41-344 is the most economic one with regard to nitrogen formation per 100 kg grain with the lowest expense for formation of the respective quantity of straw. Refs. 5 (author)

222

A wintertime study of PAHs in fine and coarse aerosols in São Paulo city, Brazil  

Science.gov (United States)

The Polycyclic aromatic hydrocarbons PAHs (naphthalene, acenaphthylene, acenaphthene, phenanthrene, fluoranthene, pyrene, benzo(a)anthracene, chrysene, benzo(b)fluoranthene, benzo(k)fluoranthene, benzo(a)pyrene, indeno(1,2,3-cd)pyrene and benzo(ghi)perylene) concentrations in fine (PM 2.5) and coarse (PM 2.5-10) atmospheric particulate matter were measured at São Paulo city, Brazil. The dominant PAH compounds were indeno(1,2,3-cd)pyrene, benzo(ghi)perylene and benzo(b)fluoranthene for both the fractions. The calculated ratios of some specific PAHs were in close agreement with those attributed to direct emissions of car exhaust. The factor analysis for PM 2.5 produced four factors: Factor 1 was attributed to diesel emissions, Factor 2 was attributed to stationary combustion source, Factor 3 was attributed to vehicular emissions and Factor 4 to natural gas combustion and biomass burning. For PM 2.5-10, Factor 1 was attributed to vehicular emissions and Factor 2 was attributed to a mixture of combustion sources such as natural gas combustion, incineration emissions and oil combustion. Also, vehicular emissions were assumed to be the major source of PAHs in the São Paulo city atmosphere.

Bourotte, Christine; Forti, Maria-Cristina; Taniguchi, Satie; Bícego, Marcia Caruso; Lotufo, Paulo Andrade

223

A Guidebook to Help Coastal Sumatran Communities Prepare for Tsunamis  

Science.gov (United States)

One way to save lives in future tsunamis in coastal Sumatran communities - where more than one million people live and where tsunamis can strike less than one half hour after the triggering earthquake - is to help these communities prepare themselves. To this end, GeoHazards International (GHI) has developed, with a team of advisors from the fields of earth science, civil engineering, emergency response management and social science, a tsunami preparedness guidebook that summarizes state-of-the-art research and worldwide experience in community tsunami preparedness. This guidebook (available at no cost on www.geohaz.org) introduces essential information about tsunamis, tsunami risk mapping, evacuation planning, community education, tsunami warning systems, and the reduction of damage that tsunamis can cause. It describes how to plan and conduct effective tsunami safety programs. Particular emphasis is placed on methods to evacuate quickly and safely all areas that could be flooded. Each section of the guidebook points to sources that provide supplementary, detailed information that may be important to particular communities. The guidebook is aimed at any person - a concerned citizen, government official, business leader, or member of a community organization - who is willing to become an advocate for local tsunami safety. Scientific expertise is not needed. GHI now seeks assistance in distributing this guidebook and in working with grassroots and international organizations to help Sumatran coastal communities use it to prepare for the next tsunami.

Samant, L.; Tobin, L. T.; Tucker, B. E.

2007-12-01

224

Optimization and determination of polycyclic aromatic hydrocarbons in biochar-based fertilizers.  

Science.gov (United States)

The agronomic benefit of biochar has attracted widespread attention to biochar-based fertilizers. However, the inevitable presence of polycyclic aromatic hydrocarbons in biochar is a matter of concern because of the health and ecological risks of these compounds. The strong adsorption of polycyclic aromatic hydrocarbons to biochar complicates their analysis and extraction from biochar-based fertilizers. In this study, we optimized and validated a method for determining the 16 priority polycyclic aromatic hydrocarbons in biochar-based fertilizers. Results showed that accelerated solvent extraction exhibited high extraction efficiency. Based on a Box-Behnken design with a triplicate central point, accelerated solvent extraction was used under the following optimal operational conditions: extraction temperature of 78°C, extraction time of 17 min, and two static cycles. The optimized method was validated by assessing the linearity of analysis, limit of detection, limit of quantification, recovery, and application to real samples. The results showed that the 16 polycyclic aromatic hydrocarbons exhibited good linearity, with a correlation coefficient of 0.996. The limits of detection varied between 0.001 (phenanthrene) and 0.021 mg/g (benzo[ghi]perylene), and the limits of quantification varied between 0.004 (phenanthrene) and 0.069 mg/g (benzo[ghi]perylene). The relative recoveries of the 16 polycyclic aromatic hydrocarbons were 70.26-102.99%. PMID:25546393

Chen, Ping; Zhou, Hui; Gan, Jay; Sun, Mingxing; Shang, Guofeng; Liu, Liang; Shen, Guoqing

2015-03-01

225

Development of Optical Fiber Technology in Poland, International Journal of Electronics and Telecommunication, vol. 57, no 2, pp.191-197, July 2011  

CERN Document Server

In this paper, the authors, chairmen of the 13th Conference on Optical Fibers and Their Applications OFA2011, and editors of the conference proceedings summarize the development of optical fiber technology in Poland (during the period of 2009- 2011) on the basis of papers presented there and consecutively published in this volume. The digest is thus not full but covers the periodically presented material every 18 months during the meetings on optical fibers in Bia?ystok-Bia?owie?za and Lublin- Krasnobród. OFC systems are developed for HEP experiments and accelerators. OFC systems are also developed for virtual atomic clocks. EuCARD information presentation was organized during this meeting. Keywords— optical fibers, optical communication systems, photonic sources and detectors, photonic sensors, integrated optics, photonics applications, photonic materials.

Dorosz, J

2011-01-01

226

Prediction of beef carcass salable yield and trimmable fat using bioelectrical impedance analysis.  

Science.gov (United States)

Bioelectrical impedance technology (BIA) is capable of providing an objective method of beef carcass yield estimation with the rapidity of yield grading. Electrical resistance (Rs), reactance (Xc), impedance (I), hot carcass weight (HCW), fat thickness between the 12th and 13th ribs (FT), estimated percentage kidney, pelvic, and heart fat (KPH%), longissimus muscle area (LMA), length between electrodes (LGE) as well as three derived carcass values that included electrical volume (EVOL), reactive density (XcD), and resistive density (RsD) were determined for the carcasses of 41 commercially fed cattle. Carcasses were subsequently fabricated into salable beef products reflective of industry standards. Equations were developed to predict percentage salable carcass yield (SY%) and percentage trimmable fat (FT%). Resulting equations accounted for 81% and 84% of variation in SY% and FT%, respectively. These results indicate that BIA technology is an accurate predictor of beef carcass composition. PMID:20374809

Zollinger, B L; Farrow, R L; Lawrence, T E; Latman, N S

2010-03-01

227

Study of the potential of a voice synthesizer in the educational process of a child with ataxia  

Directory of Open Access Journals (Sweden)

Full Text Available This case study examines the use of Information and Communication Technologies (ICT in supporting Bia (a fictitious name, a child with Ataxia, included in a Support Unit for the education of students with multiple disabilities of a school in Braga, Northern Portugal. Bia presented total incapacity in speech and severe difficulties in fine motor coordination. Thus, this study presents the relationship between special educational needs and ICT through their interconnection. In addition, this research addresses and describes the intervention in terms of ICT and its integration into the curriculum and Bias’s learning process. The integration process is reported in order to provide supporting products for augmentative and alternative communication.

Ana Teresa Oliveira

2014-04-01

228

Quantitative detection for plant virus's RNA-loading by dot-blot  

International Nuclear Information System (INIS)

A new method, RNA dot blot combined with direct determination of the radioactivity by BIO-Imaging Analyzer (dRH-dBIA) was used for detecting RNA of plant virus in infected plant tissue. This method was used for the influence of RNA-loading level of tobacco mosaic virus (TMV) in tobacco leave tissues after treatment of a plant hormone relatives (n-Propyl dihydro-jasmonate, PDJ) in the concentration range of 0.001-10 ppm. The results indicate that after PDJ application onto tobacco leaves for 3 days all PDJ treatments cause increase of TMV RNA-loading level except 0.001 ppm treatment, and the higher the concentration, the more obvious increase was observed. This phenomenon was confirmed with semi-leaf lesion spot on Nicotiana glutinosa as a local lesion host. The dRH-dBIA method is applicable in quantitative determination of RNA without obvious artificial influence

229

Anthropometric methods for obesity screening in schoolchildren: the Ouro Preto Study / Métodos de antropometría para la detección de obesidad en escolares: el estudio de Ouro Preto  

Scientific Electronic Library Online (English)

Full Text Available Antecedentes y objetivos: La obesidad infantil está aumentando alarmantemente en las últimas décadas. Para evaluar la utilidad del índice de masa corporal (IMC), el grosor del pliegue cutáneo (GPC), la circunferencia de la cintura (CC), y la impedancia bioeléctrica pie-a-pie (BIA-PP) para el cribado [...] de la obesidad en poblaciones con diversidad de razas utilizando una técnica de impedancia bioeléctrica tetrapolar (BIA-T) como el método de referencia. Métodos y resultados: se realizó un estudio transversal poblacional in la ciudad de Ouro Preto, Brasil, en el 2006. Se distribuyó al azar a escolares de 6-15 años (n = 788), que se seleccionaron en función de la edad y el sexo, estratificados por la proporción de estudiantes en cada colegio de la ciudad. Se utilizó un análisis no paramétrico de curvas ROC para definir la sensibilidad y la especificidad para cada método estudiado empleando el método tetrapolar como referencia. El IMC y la BIA-PP fueron los más idóneos para el cribado de la obesidad en las etapas prepuberales y puberales puesto que presentan un equilibrio mejor entre la sensibilidad y la especificidad y un menor fallo de clasificación. Para los niños prepúberes, el BF-GPC-D fue el mejor método de evaluación de la grasa corporal. Conclusión: Los resultados sugieren que la BIA-PP y el IMC son los métodos de elección para el cribado de la obesidad en poblaciones mixtas y que el método de elección para el cribado de la grasa corporal debe realizarse de acuerdo con la madurez sexual de los chicos y chicas. Este estudio demuestra la necesidad de realizar estudios en poblaciones mixtas más amplias para determinar los parámetros antropológicos y examinar la capacidad predictiva de los métodos y los puntos de corte obtenidos aquí en el desarrollo de la obesidad. Abstract in english Background and aims: Childhood obesity is increasing dramatically in last decades. To evaluate the usefulness of body mass index (BMI), skinfold thickness (ST), waist circumference (WC), and foot-to-foot bioelectrical impedance (BIA-FF) for screening for obesity in mixed-race popu lation, using the [...] tetrapolar bioelectrical impedance (BIA-T) technique as reference method. Methods and results: A cross-sectional-based population study was performed in the city of Ouro Preto, Brazil, in 2006. Schoolchildren aged 6-15 years (n = 788) was randomly selected according to age and sex stratified by the proportion of students in each schools of the city. Nonparametric receiver operating characteristic (ROC) analysis was used to define the sensitivity and specificity for each method studied using the tetrapolar method as reference. The BMI and the BIA-FF were the most suitable for adiposity screening in pre-pubertal and pubertal stages because they present a better balance between sensitivity and specificity, and smaller misclassification. For post-pubertal boys, the BF-ST-D was the best body fat assessment method. Conclusion: The results suggest that BIA-FF and BMI are choice methods for obesity screening in mixed population and that the method choice for body fat screening must be done according to sexual maturity of boys and girls. The present study demonstrates the need to perform studies in wider mixed-race population to determine anthropometric parameters and to examine the predictive ability of methods and cut-offs here elucidated in the development of obesity.

A. P. C., Cándido; J. P. S., Alosta; C. T., Oliveira; R. N., Freitas; S. N., Freitas; G. L. L., Machado-Coelho.

2012-02-01

230

Ten best resources for conducting financing and benefit incidence analysis in resource-poor settings.  

Science.gov (United States)

Many low- and middle-income countries are seeking to reform their health financing systems to move towards universal coverage. This typically means that financing is based on people's ability to pay while, for service use, benefits are based on the need for health care. Financing incidence analysis (FIA) and benefit incidence analysis (BIA) are two popular tools used to assess equity in health systems financing and service use. FIA studies examine who pays for the health sector and how these contributions are distributed according to socioeconomic status (SES). BIA determines who benefits from health care spending, with recipients ranked by their relative SES. In this article, we identify 10 resources to assist researchers and policy makers seeking to undertake or interpret findings from financing and benefit incidence analyses in the health sector. The article pays particular attention to the data requirements, computations, methodological challenges and country level experiences with these types of analyses. PMID:25255919

Wiseman, Virginia; Asante, Augustine; Price, Jennifer; Hayen, Andrew; Irava, Wayne; Martins, Joao; Guinness, Lorna; Jan, Stephen

2014-09-24

231

Bulk Inversion Asymmetry effects on the band structure of zincblende heterostructures in an 8-band Effective Mass Approximation model  

OpenAIRE

We have developed an 8-band Effective Mass Approximation model that describes the zero field spin splitting in the band structure of zincblende heterostructures due to bulk inversion asymmetry (BIA). We have verified that our finite difference Hamiltonian transforms in almost all situations according to the true $D_{2d}$ or $C_{2v}$ symmetry of [001] heterostructures. This makes it a computationally efficient tool for the accurate description of the band structure of heteros...

Cartoixa, X.; Ting, D. Z. -y; Mcgill, T. C.

2002-01-01

232

Imperfect information and labor market bias against small and medium-sized enterprises: a Korean case  

OpenAIRE

We examine the labor market’s bias against small and medium-sized enterprises focusing on the Seoul Digital Industrial Complex case. We adopt Heckman’s approach to control selection bias, and use primary data from questionnaire surveys conducted at both firm and employee levels. We find that conventional firm-specific factors, such as wages, fringe benefits, and weekly work hours, primarily explain the labor market bias, but imperfect information is also positively associated with the bia...

Park, Soonae; Kim, Byung-yeon; Jang, Wonchang; Nam, Kyung-min

2014-01-01

233

Changes in body fluid and energy compartments during prolonged hunger strike Alterações nos compartimentos hídricos e energéticos do organismo durante a greve de fome  

OpenAIRE

Prolonged total food deprivation in non-obese adults is rare, and few studies have documented body composition changes in this setting. In a group of eight hunger strikers who refused alimentation for 43 days, water and energy compartments were estimated, aiming to assess the impact of progressive starvation. Measurements included body mass index (BMI), triceps skinfold (TSF), arm muscle circumference (AMC), and bioimpedance (BIA) determinations of water, fat, lean body mass (LBM), and total ...

Joel Faintuch; Francisco Garcia Soriano; José Paulo Ladeira; Mariano Janiszewski; Irineu Tadeu Velasco; Gama-rodrigues, Joaquim J.

2000-01-01

234

Changes in body fluid and energy compartments during prolonged hunger strike  

OpenAIRE

Prolonged total food deprivation in non-obese adults is rare, and few studies have documented body composition changes in this setting. In a group of eight hunger strikers who refused alimentation for 43 days, water and energy compartments were estimated, aiming to assess the impact of progressive starvation. Measurements included body mass index (BMI), triceps skinfold (TSF), arm muscle circumference (AMC), and bioimpedance (BIA) determinations of water, fat, lean body mass (LBM), and total ...

Faintuch Joel; Soriano Francisco Garcia; Ladeira José Paulo; Janiszewski Mariano; Velasco Irineu Tadeu; Gama-Rodrigues Joaquim J.

2000-01-01

235

Ethnic Differences in Body Composition and Obesity Related Risk Factors: Study in Chinese and White Males Living in China  

OpenAIRE

The purpose of this cross-sectional observational study was to identify ethnic differences in body composition and obesity-related risk factors between Chinese and white males living in China. 115 Chinese and 114 white male pilots aged 28-63 years were recruited. Fasting body weight, height and blood pressure were measured following standard procedures. Whole-body and segmental body composition were measured using an 8-contact electrode bioimpedance analysis (BIA) system. Fasting serum glucos...

Fan, Jinhui; Zhang, Gong; Wu, Jiang; Ji, Yong; Li, Songlin; Li, Yunping; Wang, Doug; Lee, Simin Gharib; Wang, Lei

2011-01-01

236

Diagnostic Value of Bioelectrical Impedance Analysis versus Body Mass Index for Detection of Obesity among Students  

OpenAIRE

Purpose:Obesity is a common nutritional problem in both developed and developing countries. The aim of this study was to determine the prevalence of overweightness and obesity using both bioelectrical impedance analysis (BIA) and body mass index (BMI).Methods:In this cross-sectional study, 288 healthy college students were selected. Socio-economic status questionnaires were completed and subjects' anthropometric features were measured by a trained nurse. BMI was calculated and body fat mass (...

Najaf Zare; Seyed-Taghi Heydari; Seyed-Mohammad-Taghi Ayatollahi

2011-01-01

237

Comparison of Nutritional Parameters among Adult and Elderly Hemodialysis Patients  

OpenAIRE

Aim: The aim of this study was to compare the nutritional biochemical parameters, prealbumin levels, and bioimpedance analysis parameters of adult and elderly hemodialysis (HD) patients.Methods: This prospective cross-sectional study included 50 adult HD patients (42.0 % female). Nutritional status was assessed by post-dialysis multifrequency bioimpedance analysis (BIA), serum prealbumin and other nutritional biochemical parameters.Results: Mean age of patients was 57.4±15.1 years (range...

G Lperi Elik, Bahar Oc

2011-01-01

238

Combined synchrotron X-rays and image correlation analyses of biaxially deformed W/Cu nanocomposite thin films on Kapton  

OpenAIRE

Abstract In-situ biaxial tensile tests within the elastic domain were conducted with W/Cu nanocomposite thin films deposited on a polyimide cruciform substrate thanks to a biaxial testing machine developed on the DiffAbs beamline at SOLEIL synchrotron. The mechanical behavior of the nanocomposite was characterized at the micro-scale and the macro-scale using simultaneously synchrotron X-ray diffraction and digital image correlation techniques. Strain analyses for equi-biaxial and non equi-bia...

Djaziri, Soundes; Renault, Pierre-olivier; Hild, Franc?ois; Le Bourhis, Eric; Goudeau, Philippe; Thiaudie?re, Dominique; Faurie, Damien

2011-01-01

239

Validity of a new abdominal bioelectrical impedance device to measure abdominal and visceral fat: comparison with MRI  

OpenAIRE

Abdominal fat, and in particular, visceral adipose tissue (VAT), is the critical fat depot associated with metabolic aberrations. At present, VAT can only be accurately measured by computed tomography or magnetic resonance imaging (MRI). This study was designed to compare a new abdominal bioelectrical impedance (BIA) device against total abdominal adipose tissue (TAAT) and VAT area measurements made from an abdominal MRI scan, and to assess its reliability and accuracy. One-hundred twenty par...

Browning, Lm; Mugridge, O.; Chatfield, Md; Dixon, Ak; Aitken, Sw; Joubert, I.; Prentice, Am; Jebb, Sa

2010-01-01

240

Nature of Solar Radiation as Encouraged to Produce an Increment of Dissolved Oxygen and Hydrogen Peroxide in Oxidation Ponds for Community Wastewater Treatment at H.M.The King’s LERD Project Site in Phetchaburi Province, Thailand  

OpenAIRE

H.M.The King’s initiative nature by nature process for community wastewater treatment has been conducted since 1990 at Laem Phak Bia sub district, Ban Laem district, Phetchaburi province, Thailand on UTM 1442240 to 1443480 N and 0619271 to 0619271 E. The fresh food markets and households were the point sources of Phetchaburi municipal wastewater that flowing newly construction sewage system in order to receive them to four sub stations on both sides of Phetchaburi river before pumping to Kl...

Thanit Pattamapitoon; Pramote Sirirote; Pannee Pakkong; Kasem Chunkao

2013-01-01

241

Current trends in obesity: body composition assessment, weight regulation, and emerging techniques in managing severe obesity  

OpenAIRE

The global obesity epidemic is an ever-growing concern, with approximately a third of North Americans fitting the criteria for obesity. It is therefore important to assess obesity and be able to classify its severity. The Body Mass Index (BMI) classification is the most widely used tool for assessing obesity. However, due to inaccuracies in BMI in measuring body composition in the obese population, other tools like anthropometry, bioelectrical Impedance Analysis (BIA) and Quantitative Magneti...

Switzer, Noah J.; Mangat, Harshdeep S.; Karmali, Shahzeer

2013-01-01

242

Evaluating pedestrian priority street potential in Yaletown, Vancouver, B.C.  

OpenAIRE

This capstone project evaluates the potential for a pedestrian priority street in Yaletown through the analysis of two case studies – New Road (Brighton, England) and Strædet (Copenhagen, Denmark). Interviews with members of the Yaletown Business Improvement Association (BIA) were conducted to determine concerns with both the current state of the 1100 block of Mainland St. as well as with a possible pedestrian priority scheme for the block. Five concerns were identified and subsequently us...

Macphee, Ian James

2008-01-01

243

Office of Trust Services Geospatial Support  

Science.gov (United States)

The Office of Trust Services Geospatial Services (OTSGS) provides GIS training to BIA offices and employees of Federally Recognized Tribal Entities. There is no tuition cost for this training. Expenses for transportation, hotel accommodations, and meals are the responsibility of the participant. Training courses are available at the OTSGS Training Center in Lakewood, CO and various field locations. Training dates and availability are subject to change at the discretion of OTSGS.

244

Crystallization analysis of AlMg (AG 10) alloy with use of ATND method  

OpenAIRE

The paper presents results of non-ferrous metal crystallization research with use of ATND method. The research was carried out in the Faculty of Chipless Forming Technology, University of Bielsko-Bia?a. The new method of analysis of non-ferrous metals alloy crystallization assures complete picture of generated structural components of the alloy. Structural components defined in the tested alloy using ATND method have been verified by X-ray microanalysis, which unambiguously has confirmed the...

Ciu?ka T.

2007-01-01

245

Assessment of body composition by dual-energy X-ray absorptiometry, bioimpedance analysis and anthropometrics in children : the Physical Activity and Nutrition in Children study  

DEFF Research Database (Denmark)

We compared InBody720 segmental multifrequency bioimpedance analysis (SMF-BIA) with Lunar Prodigy Advance dual-energy X-ray absorptiometry (DXA) in assessment of body composition among 178 predominantly prepubertal children. Segmental agreement analysis of body compartments was carried out, and inter-relationships of anthropometric and other measures of body composition were defined. Moreover, the relations of different reference criteria for excess body fat were evaluated.

Tompuri, Tuomo T; Lakka, Timo A

2013-01-01

246

Eukaryotic initiation factor 5A is a cellular target of the human immunodeficiency virus type 1 Rev activation domain mediating trans- activation  

OpenAIRE

Expression of human immunodeficiency virus type 1 (HIV-1) structural proteins requires the presence of the viral trans-activator protein Rev. Rev is localized in the nucleus and binds specifically to the Rev response element (RRE) sequence in viral RNA. Furthermore, the interaction of the Rev activation domain with a cellular cofactor is essential for Rev function in vivo. Using cross-linking experiments and Biospecific Interaction Analysis (BIA) we identify eukaryotic initiation factor 5A (e...

1993-01-01

247

Análisis de la variación genética en clones de caucho (Hevea brasiliensis) de Asia, Suramérica y Centroamérica usando marcadores RAPD  

OpenAIRE

El caucho natural (Hevea brasiliensis) representa a especies potenciales para reforestación y programas de explo­tación comercial en ciudades tropicales como Colombia. La variabilidad genética de una colección de caucho que se encuentra en la Estación experimental de Paraguaycito en Buenavista, departamento del Quindio en Colom­bia fue estudiada para aumentar el conocimiento en cuanto a las especies y realizar un mejor uso de los árboles disponibles. Un total de 25 clones, seis de Sur...

Ce?sar Augusto, Herna?ndez R.; Afanador Kafuri Lucía; Arango Isaza Rafael; Lobo Arias Mario

2006-01-01

248

Análisis de la variación genética en clones de caucho (Hevea brasiliensis) de Asia, Suramérica y Centroamérica usando marcadores RAPD Analysis of genetic variation in clones of rubber (Hevea brasiliensis) from Asían, South and Central American origin using RAPDs markers  

OpenAIRE

El caucho natural (Hevea brasiliensis) representa a especies potenciales para reforestación y programas de explo­tación comercial en ciudades tropicales como Colombia. La variabilidad genética de una colección de caucho que se encuentra en la Estación experimental de Paraguaycito en Buenavista, departamento del Quindio en Colom­bia fue estudiada para aumentar el conocimiento en cuanto a las especies y realizar un mejor uso de los árboles disponibles. Un total de 25 clones, seis de Sur...

Lobo Arias Mario; Arango Isaza Rafael; Afanador Kafuri Lucía; Ce?sar Augusto, Herna?ndez R.

2006-01-01

249

Comparison of two methods of assessing total body water at sea level and increasing high altitude.  

Science.gov (United States)

Fluid retention is a recognized feature of acute mountain sickness. However, accurate assessment of hydration, including the quantification of body water, has traditionally relied on expensive and non-portable equipment limiting its utility in the field setting. We compared the assessment of total body water (TBW) and their relationship to total body weight using two non-invasive methods using the NICas single-frequency bioimpedance analysis (SF-BIA) system and the BodyStat QuadScan 4000 multifrequency BIA system (MF-BIA). TBW measurements were performed at rest at sea level and at high altitude (HA) at 3833 m postexercise and at rest and thereafter at rest at 4450 m and 5129 m on 47 subjects. The average age was 34.5 ± 9.3 years with an age range of 21-54 years (70.2% male). There were strong correlations between TBW assessment with both methods at sea level (r = 0.90; 95% CI 0.78-0.95: P<0.0001) and at HA (r = 0.92; 0.89-0.94: P<0.0001), however, TBW readings were 0.2 l and 1.91 l lower, respectively, with the NICaS. There was a stronger correlation between TBW and body weight with the QuadScan (r = 0.91; P<0.0001) than with the NICaS (r = 0.83; P<0.0001). The overall agreement between the two TBW methods was good, but the 95% confidence intervals around these agreements were relatively wide. We conclude that there was reasonable agreement between the two methods of BIA for TBW, but this agreement was lower at HA. PMID:24797153

Boos, C J; Holdsworth, D A; Hall, D P; Mellor, A; O'Hara, J; Woods, D R

2014-11-01

250

Crystallization analysis of AlSi7Mg (AK 7) alloy with use of „ATND” method  

OpenAIRE

The paper presents results of non-ferrous metal crystallization research with use of ATND method. The research was carried out in the Faculty of Chipless Forming Technology, University of Bielsko-Bia?a. The new method of analysis of non-ferrous metals alloy crystallization assures complete picture of generated structural components of the alloy. Structural components defined in the tested alloy using ATND method have been verified by X-ray microanalysis, which unambiguously has confirmed the...

Ciuc?ka, T.

2007-01-01

251

Blind Interference Alignment in General Heterogeneous Networks  

OpenAIRE

Heterogeneous networks have a key role in the design of future mobile communication networks, since the employment of small cells around a macrocell enhances the network's efficiency and decreases complexity and power demand. Moreover, research on Blind Interference Alignment (BIA) has shown that optimal Degrees of Freedom (DoF) can be achieved in certain network architectures, with no requirement of Channel State Information (CSI) at the transmitters. Our contribution is a ...

Kalokidou, Vaia; Johnson, Oliver; Piechocki, Robert

2014-01-01

252

Multisite Evaluation of Point of Care CD4 Testing in Papua New Guinea  

OpenAIRE

Laboratory-based CD4 monitoring of HIV patients presents challenges in resource limited settings (RLS) including frequent machine breakdown, poor engineering support and limited cold chain and specimen transport logistics. This study assessed the performance of two CD4 tests designed for use in RLS; the Dynal assay and the Alere PIMA test (PIMA). Accuracy of Dynal and PIMA using venous blood was assessed in a centralised laboratory by comparison to BD FACSCount (BD FACS). Dynal had a mean bia...

Malagun, Malin; Nano, Gideon; Chevallier, Caroline; Opina, Ragagalo; Sawiya, Gola; Kivavia, Joseph; Kalinoe, Albina; Nathaniel, Kathalina; Kaminiel, Oscillah; Millan, John; Carmone, Andrea; Dini, Mary; Palou, Theresa; Topma, Kum; Lavu, Evelyn

2014-01-01

253

Avaliação da perda hídrica durante treino intenso de rugby Evaluación de la pérdida hídrica durante el entrenamiento en rugby Evaluation of water loss during high intensity rugby training  

OpenAIRE

O rugby é um esporte no qual os jogadores passam a maior parte do tempo em atividades aeróbicas, mas há momentos em que se envolvem em atividades anaeróbicas. De acordo com a percentagem de desidratação corporal em relação ao peso, os sintomas fisiológicos podem variar desde sede até insuficiência renal e circulatória. O estudo teve como objetivo verificar a taxa de sudorese de atletas femininas de rugby. Para tanto, as atletas foram pesadas e submetidas a teste BIA antes e após ...

Marianna Marques Perrella; Patrícia Sayuri Noriyuki; Luciana Rossi

2005-01-01

254

DXA, bioelectrical impedance, ultrasonography and biometry for the estimation of fat and lean mass in cats during weight loss  

Directory of Open Access Journals (Sweden)

Full Text Available Abstract Background Few equations have been developed in veterinary medicine compared to human medicine to predict body composition. The present study was done to evaluate the influence of weight loss on biometry (BIO, bioimpedance analysis (BIA and ultrasonography (US in cats, proposing equations to estimate fat (FM and lean (LM body mass, as compared to dual energy x-ray absorptiometry (DXA as the referenced method. For this were used 16 gonadectomized obese cats (8 males and 8 females in a weight loss program. DXA, BIO, BIA and US were performed in the obese state (T0; obese animals, after 10% of weight loss (T1 and after 20% of weight loss (T2. Stepwise regression was used to analyze the relationship between the dependent variables (FM, LM determined by DXA and the independent variables obtained by BIO, BIA and US. The better models chosen were evaluated by a simple regression analysis and means predicted vs. determined by DXA were compared to verify the accuracy of the equations. Results The independent variables determined by BIO, BIA and US that best correlated (p?r2, 19 equations were selected (12 for FM, 7 for LM; however, only 7 equations accurately predicted FM and one LM of cats. Conclusions The equations with two variables are better to use because they are effective and will be an alternative method to estimate body composition in the clinical routine. For estimated lean mass the equations using body weight associated with biometrics measures can be proposed. For estimated fat mass the equations using body weight associated with bioimpedance analysis can be proposed.

Borges Naida C

2012-07-01

255

Bias Adaptation for Vocal Tract Length Normalization  

OpenAIRE

Vocal tract length normalisation (VTLN) is a well known rapid adaptation technique. VTLN as a linear transformation in the cepstral domain results in the scaling and translation factors. The warping factor represents the spectral scaling parameter. While, the translation factor represented by bias term captures more speaker characteristics especially in a rapid adaptation framework without having the risk of over-fitting. This paper presents a complete and comprehensible derivation of the bia...

Saheer, Lakshmi; Yamagishi, Junichi; Garner, Philip N.; Dines, John

2013-01-01

256

Body composition and body fat distribution in relation to later risk of acute myocardial infarction: a Danish follow-up study  

DEFF Research Database (Denmark)

Introduction:Obesity is a modifiable risk factor for acute myocardial infarction (MI), but lean body mass (LBM) may also be an important factor. Low LBM may increase the risk of MI and LBM may modify the effect of obesity on MI. Thus, the inability of the classical anthropometric measures to evaluate LBM may lead to misclassification of MI risk in both lean and obese persons. We investigated the associations between incident MI and bioelectrical impedance analyses (BIA) derived measures of body composition in combination with body mass index (BMI) and anthropometric measures of body fat distribution.Methods and results:From 1993 to 1997, 27¿148 men and 29¿863 women, aged 50 to 64 year, were recruited into the Danish prospective study Diet, Cancer and Health. During 11.9 years of follow-up we identified 2028 cases of incident MI (1487 men and 541 women). BMI, waist circumference (WC), hip circumference and BIA of body composition including body fat mass (BFM), body fat percentage and LBM were measured at baseline. We used Cox proportional hazard models with age as time axis and performed extensive control for confounding. Weight, BMI, classical estimates of abdominal obesity and BIA estimates of obesity showed significant positive associations with incident MI. However, BFM adjusted for WC showed no association. Low LBM was associated with a higher risk of incident MI in both genders, and high LBM was associated with a higher risk in men.Conclusion:Obesity was positively associated with MI. Estimates of obesity achieved by BIA seemed not to add additional information to classical anthropometric measures regarding MI risk. Both high and low LBM may be positively associated with MI.International Journal of Obesity advance online publication, 1 February 2011; doi:10.1038/ijo.2010.278.

Stegger, Jakob; Schmidt, E B

2011-01-01

257

Prediction of fat-free body mass from bioelectrical impedance and anthropometry among 3-year-old children using DXA  

OpenAIRE

For 3-year-old children suitable methods to estimate body composition are sparse. We aimed to develop predictive equations for estimating fat-free mass (FFM) from bioelectrical impedance (BIA) and anthropometry using dual-energy X-ray absorptiometry (DXA) as reference method using data from 99 healthy 3-year-old Danish children. Predictive equations were derived from two multiple linear regression models, a comprehensive model (height2/resistance (RI), six anthropometric measurements) and a s...

Ejlerskov, Katrine T.; Jensen, Signe M.; Christensen, Line B.; Christian Ritz; Michaelsen, Kim F.; Christian Mølgaard

2014-01-01

258

Identifikace somatometrických a volemických zm?n bioimpedan?ními metodami.  

Czech Academy of Sciences Publication Activity Database

Ústí nad Labem : BEST servis, 2011 - (Navrátil, T.; Barek, J.), s. 114-117 ISBN 978-80-254-9634-3. [Moderní elektrochemické metody /31./. Jet?ichovice (CZ), 23.05.2011-27.05.2011] R&D Projects: GA ?R GAP206/11/1638; GA AV ?R IAA400400806; GA MŠk(CZ) LC06063 Institutional research plan: CEZ:AV0Z40400503 Keywords : bioelectrical impendance analysis * multi-frequency BIA * body weight Subject RIV: CG - Electrochemistry

Petr, M.; Kohlíková, E.; Navrátil, Tomáš

259

Estimation of abdominal fat compartments by bioelectrical impedance: The validity of the ViScan measurement system in comparison with MRI.  

OpenAIRE

Abstract Background: Abdominal obesity, more specifically increased intra-abdominal adipose tissue is strongly associated with increased risk of metabolic disease. Bioelectrical impedance analysis (BIA) has been proposed as a potential method of determining individual abdominal fat compartments in the form of the commercially available ViScanTM measurement system (Tanita Corporation, Japan) but has yet to be independently validated. Objective: To investigate the validity of the...

Collins, Adam; Thomas, Elizabeth Louise; Mccarthy, John; Fitzpatrick, Julie; Durighel, Guiliana; Goldstone, Anthony; Bell, Jimmy

2010-01-01

260

La diffusion Brillouin dans les fibres à cristaux photoniques: fondements et applications aux capteurs optiques  

OpenAIRE

Le cadre général dans lequel s'insère ce travail de thèse est celui de l'étude de la diffusion Brillouin dans une nouvelle génération de fibres optiques à cristaux photoniques (PCFs). Ces fibres, qui présentent un arrangement périodique de micro-canaux d'air parallèles le long de la fibre, possèdent en effet des propriétés optiques et acoustiques remarquables et inédites par rapport aux fibres conventionnelles. De fa¸con plus précise, nous montrons dans ce travail, par le bia...

Stiller, Birgit

2011-01-01

261

Food Prices and Body Fatness among Youths  

OpenAIRE

In this paper, we examine the effect of food prices on clinical measures of obesity, including body mass index (BMI) and percentage body fat (PBF) measures derived from bioelectrical impedance analysis (BIA) and dual energy x-ray absorptiometry (DXA), among youths ages 12 through 18. The empirical analyses employ data from various waves of the National Health and Nutrition Examination Survey (NHANES) merged with several food prices measured by county and year. This is the first study to consi...

Grossman, Michael; Tekin, Erdal; Wada, Roy

2013-01-01

262

Comparação entre diferentes métodos para estimativa de gordura corporal de ciclistas brasileiros de elite / Comparison among different methods for the estimation of body fatness in brazilian elite cyclists  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese O objetivo do estudo foi comparar diferentes métodos de estimativa de gordura corporal em ciclistas de elite. A amostra foi composta por 15 atletas de alto nível, do sexo masculino, com idade média de 28,6 anos. Gordura corporal foi estimada pela equação para espessura de dobras cutâneas (EDC), anál [...] ise da bioimpedância elétrica (BIA) e absortometria de radiológica de dupla energia (DEXA) (utilizada como referência). O teste t pareado comparou as diferenças entre os métodos e o coeficiente de correlação intraclasse analisou o relacionamento entre os mesmos. Foi observado que os valores do percentual de gordura corporal estimado pela BIA (p= 0,029), mas não o estimado pela EDC (p= 0,094) diferiram das estimativas da DEXA. Dessa maneira, é possível concluir que EDC apresentou estimativas mais próximas daquelas fornecidas pelo DEXA. Abstract in english The present study aimed at comparing different methods to estimate the body fatness of elite athletes. The sample consisted of 15 male elite athletes with mean age of 28.6 years. The body fatness was estimated by the skinfold (EDC), bioelectric impedance analysis (BIA) and the dual-energy X-ray abso [...] rptiometry (DEXA) (reference). The paired t-tests compared the differences among methods, and the intraclass correlation coefficient analyzed the relationship among them. BIA (p= 0.029) overestimated the body fatness provided by DEXA, but EDC (p= 0.094) did not overestimate. Therefore, it is possible to conclude that EDC presented the body fatness similar to DEXA.

Eduardo Bernardo, Sangali; Eduardo Zapaterra, Campos; Robson Chacon, Castoldi; Rômulo Araújo, Fernandes; Ismael Forte, Freitas Júnior; Pedro, Balikian Junior.

2012-09-01

263

Proposed amendments to the Bankruptcy and Insolvency Act and Companies' Creditors Arrangement Act  

International Nuclear Information System (INIS)

The proposed amendments to the Bankruptcy and Insolvency Act (BIA) and the Companies' Creditors Arrangement Act (CCAA), which would have a significant impact on creditors' rights and remedies when dealing with a petroleum industry insolvency, were explained. An explanation was presented for the structured procedures that should be followed for: (1) Directors' liability, (2) Protection given to trustees and receivers against pre-appointment corporate obligations, and (3) International insolvencies

264

Concordancia entre los porcentajes de grasa corporal estimados mediante el área adiposa del brazo, el pliegue del tríceps y por impedanciometría brazo-brazo / Interchangeability among the Percentages of Body Fat Estimated by Mid-Arm Adipose Area, Triceps Skinfold Thickness and Arm-to-Arm Segmental Bioimpedance Analysis  

Scientific Electronic Library Online (English)

Full Text Available SciELO Public Health | Language: Spanish Abstract in spanish Fundamento: La valoración del estado nutricional a partir de los miembros superiores es útil a nivel clínico. El objetivo de este trabajo es analizar el grado de acuerdo entre los porcentajes de grasa corporal (%GC) estimados mediante el área adiposa del brazo (%GC BRAZO), la ecuación de Siri para e [...] l pliegue del tríceps (%GC TRÍCEPS) y por bioimpedanciometría brazo-brazo (%GC BIA), así como con la ecuación de Siri para cuatro pliegues (%GC SIRI). Métodos: Estudio descriptivo transversal. Se valoró antropométricamente y por impedanciometría (Omron BF 300©) a 145 personas (83 varones, 62 mujeres). La concordancia entre métodos se analizó mediante el coeficiente de correlación intraclase (CCI) y el método de Bland-Altman. Resultados: el CCI entre %GC BRAZO-%GC TRÍCEPS fue de 0,8322 (intervalo de confianza al 95% 0,7672-0,8791); entre %GCB RAZO-%GC BIA de 0,7337 (0,6305-0,8080) y entre %GC TRICEPS-%GC BIA de 0,9290 (0,9015; 0,9488). Con el método de Bland-Altman el intervalo de concordancia entre %GC BRAZO-%GC TRÍCEPS (-11,2; 16,96) y entre %GC BRAZO-%GC BIA (-13,04; 21,76) superó el punto de corte (±10%), pero no entre %G CTRICEPS-%GC BIA (-6,64; 9,6), %GC SIRI-%GC TRÍCEPS (-5,27; 4,52) y %GC SIRI-%GC BIA (-6,31; 8,52). El IMC no influyó en el resultado. Conclusiones: El método utilizado influye en la valoración nutricional realizada a partir de los miembros superiores. El área adiposa del brazo sobreestima el %GC con relación a la ecuación de Siri para el pliegue del tríceps o para cuatro pliegues y a la impedanciometría, y aunque este resultado sugiere que el área adiposa del brazo puede no ser un indicador válido de la adiposidad global, este extremo deberá ser confirmado frente a una técnica patrón. Abstract in english Background: Assessing nutritional status based on the upper limbs is useful at the clinical level. The aim of this study is to evaluate the agreement degree of the body fat percentages (%BF) estimated by the mid-arm adipose area (%BF ARM), the Siri triceps skinfold equation (%BF TRICEPS) and the arm [...] -to-arm segmental bioimpedance analysis (%BF BIA), as well as the Siri four-skinfold equation (%BF SIRI), assessing their interchangeability. Methods: A cross-sectional study. Body fat assessments were made on a total of 145 subjects (83 males, 62 females) anthropometrically and by bioelectrical impedance analysis (Omron BF 300Ó). The agreement between methods were analyzed using the interclass correlation coefficient (ICC) and the Bland-Altman method. Results: The ICC between %BF ARM and %BF TRÍCEPS was 0.8322 (CI 95% 0.7672-0.8791); between %BF ARM-%BF BIA 0.7337 (0.6305-0.8080) and between %BF TRICEPS-%BF BIA 0.9290 (0.9015; 0.9488). For the Bland-Altman method, the agreement interval between %BF ARM-%BF TRÍCEPS (-11.2; 16.96) and between %BF ARM-%BF BIA (-13.04; 21.76) exceeded the cutoff point (±10%), but not between %BF TRICEPS-%BF BIA (-6.64; 9.6), %BF SIRI-%BF TRÍCEPS (-5.27; 4.52) and %BF SIRI-%BF BIA (-6.31; 8.52). The BMI has no bearing on the results. Conclusions: The method utilized influences the nutritional assessment made based on the upper limbs. The mid-arm adipose area method overestimated the %BF with relationship to the Siri triceps skinfold or four-skinfold equation and to the bioelectrical impedance analysis, and although this result suggests that mid-arm adipose area may not be a good indicator of global adiposity, this must be confirmed against a gold standard.

Vicente, Martín Moreno; Juan Benito, Gómez Gandoy; María Jesús, Antoranz González; Agustín, Gómez de la Cámara.

2003-06-01

265

Concordancia entre los porcentajes de grasa corporal estimados mediante el área adiposa del brazo, el pliegue del tríceps y por impedanciometría brazo-brazo / Interchangeability among the Percentages of Body Fat Estimated by Mid-Arm Adipose Area, Triceps Skinfold Thickness and Arm-to-Arm Segmental Bioimpedance Analysis  

Scientific Electronic Library Online (English)

Full Text Available SciELO Spain | Language: Spanish Abstract in spanish Fundamento: La valoración del estado nutricional a partir de los miembros superiores es útil a nivel clínico. El objetivo de este trabajo es analizar el grado de acuerdo entre los porcentajes de grasa corporal (%GC) estimados mediante el área adiposa del brazo (%GC BRAZO), la ecuación de Siri para e [...] l pliegue del tríceps (%GC TRÍCEPS) y por bioimpedanciometría brazo-brazo (%GC BIA), así como con la ecuación de Siri para cuatro pliegues (%GC SIRI). Métodos: Estudio descriptivo transversal. Se valoró antropométricamente y por impedanciometría (Omron BF 300©) a 145 personas (83 varones, 62 mujeres). La concordancia entre métodos se analizó mediante el coeficiente de correlación intraclase (CCI) y el método de Bland-Altman. Resultados: el CCI entre %GC BRAZO-%GC TRÍCEPS fue de 0,8322 (intervalo de confianza al 95% 0,7672-0,8791); entre %GCB RAZO-%GC BIA de 0,7337 (0,6305-0,8080) y entre %GC TRICEPS-%GC BIA de 0,9290 (0,9015; 0,9488). Con el método de Bland-Altman el intervalo de concordancia entre %GC BRAZO-%GC TRÍCEPS (-11,2; 16,96) y entre %GC BRAZO-%GC BIA (-13,04; 21,76) superó el punto de corte (±10%), pero no entre %G CTRICEPS-%GC BIA (-6,64; 9,6), %GC SIRI-%GC TRÍCEPS (-5,27; 4,52) y %GC SIRI-%GC BIA (-6,31; 8,52). El IMC no influyó en el resultado. Conclusiones: El método utilizado influye en la valoración nutricional realizada a partir de los miembros superiores. El área adiposa del brazo sobreestima el %GC con relación a la ecuación de Siri para el pliegue del tríceps o para cuatro pliegues y a la impedanciometría, y aunque este resultado sugiere que el área adiposa del brazo puede no ser un indicador válido de la adiposidad global, este extremo deberá ser confirmado frente a una técnica patrón. Abstract in english Background: Assessing nutritional status based on the upper limbs is useful at the clinical level. The aim of this study is to evaluate the agreement degree of the body fat percentages (%BF) estimated by the mid-arm adipose area (%BF ARM), the Siri triceps skinfold equation (%BF TRICEPS) and the arm [...] -to-arm segmental bioimpedance analysis (%BF BIA), as well as the Siri four-skinfold equation (%BF SIRI), assessing their interchangeability. Methods: A cross-sectional study. Body fat assessments were made on a total of 145 subjects (83 males, 62 females) anthropometrically and by bioelectrical impedance analysis (Omron BF 300Ó). The agreement between methods were analyzed using the interclass correlation coefficient (ICC) and the Bland-Altman method. Results: The ICC between %BF ARM and %BF TRÍCEPS was 0.8322 (CI 95% 0.7672-0.8791); between %BF ARM-%BF BIA 0.7337 (0.6305-0.8080) and between %BF TRICEPS-%BF BIA 0.9290 (0.9015; 0.9488). For the Bland-Altman method, the agreement interval between %BF ARM-%BF TRÍCEPS (-11.2; 16.96) and between %BF ARM-%BF BIA (-13.04; 21.76) exceeded the cutoff point (±10%), but not between %BF TRICEPS-%BF BIA (-6.64; 9.6), %BF SIRI-%BF TRÍCEPS (-5.27; 4.52) and %BF SIRI-%BF BIA (-6.31; 8.52). The BMI has no bearing on the results. Conclusions: The method utilized influences the nutritional assessment made based on the upper limbs. The mid-arm adipose area method overestimated the %BF with relationship to the Siri triceps skinfold or four-skinfold equation and to the bioelectrical impedance analysis, and although this result suggests that mid-arm adipose area may not be a good indicator of global adiposity, this must be confirmed against a gold standard.

Vicente, Martín Moreno; Juan Benito, Gómez Gandoy; María Jesús, Antoranz González; Agustín, Gómez de la Cámara.

2003-06-01

266

Southpoint power plant final environmental impact statement  

International Nuclear Information System (INIS)

This document is the Final Environmental Impact Statement (FEIS) for a proposed lease of acreage on the Fort Mojave Indian Reservation in Mohave County, Arizona for development of a natural gas fired 500 megawatt combined cycle power plant. The Bureau of Indian Affairs (BIA) serves as the federal lead agency and the Fort Mojave Indian Tribe (FMIT) and the Western Area Power Administration (WAPA) are cooperating agencies for the EIS process. The purpose of this document is to provide information to the public and to interested public agencies regarding the environmental consequences of the approval of a long-term lease for the construction and operation of the proposed Southpoint power plant. The FEIS, prepared by Hallock/Gross, Inc. under the direction of the BIA and in cooperation with the FMIT and WAPA, addresses the comparative analysis of alternatives and evaluates the environmental consequences of such alternatives on various resources and addresses public comments. A number of technical reports were used in the preparation of the Draft EIS and FEIS and are available for review as Appendices to this document under separate cover that can be reviewed at the BIA offices which are listed

267

Comparison of two field methods for estimating body fat in different spanish dance disciplines.  

Science.gov (United States)

The purpose of the present study was to investigate percentage body fat (%BF) differences in three Spanish dance disciplines and to compare skinfold and bioelectrical impedance predictions of body fat percentage in the same sample. Seventy-six female dancers, divided into three groups, Classical (n=23), Spanish (n=29) and Flamenco (n=24), were measured using skinfold measurements at four sites: triceps, subscapular, biceps and iliac crest, and whole body multi-frequency bioelectrical impedance (BIA). The skinfold measures were used to predict body fat percentage via Durnin and Womersley's and Segal, Sun and Yannakoulia equations by BIA. Differences in percent fat mass between groups (Classical, Spanish and Flamenco) were tested by using repeated measures analysis (ANOVA). Also, Pearson's product-moment correlations were performed on the body fat percentage values obtained using both methods. In addition, Bland-Altman plots were used to assess agreement, between anthropometric and BIA methods. Repeated measures analysis of variance did not found differences in %BF between modalities (pballet dancers, having a tendency to produce underestimations as %BF increased with Segal and Durnin-Womersley equations compared to Yannakoulia, concluding that these methods are not interchangeable. PMID:25238839

Alvero-Cruz, José Ramón; Marfell-Jones, Mike; Alacid, Fernando; Artero Orta, Pedro; Correas-Gómez, Lorena; Santonja Medina, Fernando; Carnero, Elvis A

2014-01-01

268

Diagnostic Value of Bioelectrical Impedance Analysis versus Body Mass Index for Detection of Obesity among Students  

Directory of Open Access Journals (Sweden)

Full Text Available Purpose:Obesity is a common nutritional problem in both developed and developing countries. The aim of this study was to determine the prevalence of overweightness and obesity using both bioelectrical impedance analysis (BIA and body mass index (BMI.Methods:In this cross-sectional study, 288 healthy college students were selected. Socio-economic status questionnaires were completed and subjects' anthropometric features were measured by a trained nurse. BMI was calculated and body fat mass (BFM and body fat percent (BF% were obtained using BIA method by hand-to-hand Omron BF-500 set.Results:Mean age of the subjects was 21.1?1.7 years. Based on BMI, 2.6% of males and 2.2% of females were obese while 15.7% and 9.6% were diagnosed to be overweight respectively.The correlation between BMI values and BFM were 0.883 and 0.908 in males and females respectively (p < 0.001. Furthermore, BF% had a significant correlation with BMI in both males and females (p < 0.001.Conclusions:Our survey demonstrated a lower prevalence of obesity and overweightness in college students compared with Iranian general population, especially in females. Additionally, BIA method was shown to be closely correlated with and as much valuable as BMI in regard to detection of obesity.

Najaf Zare

2011-11-01

269

Assessment of body fat composition disturbances by bioimpedance analysis in HIV-infected adults.  

Science.gov (United States)

HIV-lipodystrophy syndrome is characterized by different patterns of body fat distribution (BFD) which are identified by clinical and body composition (BC) assessment, including bioimpedance analysis (BIA). Our aim was to compare BC in HIV-infected patients on combination antiretroviral therapy (cART) according to 4 distinct phenotypes of BFD (G1-no lipodystrophy, G2-isolated central fat accumulation, G3-lipoatrophy, G4-mixed forms of lipodystrophy) and assessed factors associated with them. Anthropometry and BIA were performed in 344 HIV-1 patients. G2 and G4 phenotype patients had significantly higher fat mass (FM) but no differences were observed in fat-free mass (FFM) and total body water among the 4 phenotypes. Significant negative associations were found between the presence of lipoatrophy and female gender, body mass index (BMI), waist (WC), hip (HC) and thigh circumferences, and total body FM estimated by BIA. After adjustment for gender, cART duration and BMI, G3 had significant lower WC [odds ratio (OR)=0.84; 0.78- 0.90] and HC (OR=0.88; 0.81-0.96) mean. Independently of gender, cART duration and BMI, G2 remained significantly associated with higher WC (OR=1.11; 1.05-1.18) and HC (OR=1.15; 1.07-1.23) mean, and with FM estimated by BIA [FM as %, OR=1.17 (1.09-1.26); and FM as kg, OR=1.15 (1.06- 1.25)]. There was a significant positive association between G4 and female gender (OR=1.66; 1.01-2.75), BMI (OR=1.10; 1.04-1.17) and WC (OR=1.15; 1.09-1.21). The similar FFM along the BFD spectrum describes the actual BC of these patients without sarcopenia. In a clinical setting, BIA is an easy and useful tool to evaluate fat mass and FFM and gives us a picture of BC that was not possible with anthropometry. PMID:21737998

Freitas, P; Carvalho, D; Santos, A C; Mesquita, J; Correia, F; Xerinda, S; Marques, R; Martinez, E; Sarmento, A; Medina, J L

2011-11-01

270

Abundances of PAHs in the ISM: confronting observations with experimental results  

Science.gov (United States)

Context. The identification of the carriers of the diffuse interstellar bands (DIBs) is the longest standing problem in the study of the interstellar medium. Here we present recent UV laboratory spectra of various polycyclic aromatic hydrocarbons (PAHs) and explore the potential of these molecules as carriers of the DIBs. Whereas, in the near IR range, the PAHs exhibit vibrational bands that are not molecule-specific, their electronic transitions occurring in the UV/vis provide characteristic fingerprints. The comparison of laboratory spectra calibrated in intensity with high signal-to-noise observational data in the UV enables us to establish new constraints on PAH abundances. Aims: From a detailed comparison of the gas-phase and Ne-matrix absorption spectra of anthracene, phenanthrene, pyrene, 2,3-benzofluorene, benzo[ghi]perylene, and hexabenzocoronene with new interstellar spectra, we aim to infer the abundance of these PAHs in the interstellar medium. Methods: We present spectra of PAHs measured at low temperature in the gas phase and in an Ne matrix, and present methods to derive absolute absorption cross sections for the matrix and gas phase spectra. We have obtained high signal to noise (S/N > 100) absorption spectra toward five lines of sight with reddenings of EB-V = 1-1.6 mag. The spectra cover the 3050-3850 Å wavelength region where the PAHs studied here show prominent absorption features. Results: From the observations, we infer upper limits in the fractional abundances of the PAHs studied here. Upper limits in the column densities of anthracene of 0.8-2.8 × 1012 cm-2 and of pyrene and 2,3-benzofluorene ranging from 2-8 × 1012 cm-2 are inferred. Upper limits in the column densities of benzo[ghi]perylene are 0.9-2.4 × 1013 and 1014 cm-2 for phenanthrene. The measurements indicate fractional abundances of anthracene, pyrene, and 2,3-benzofluorene of a few times 10-10. Upper limits in the fractional abundance of benzo[ghi]perylene of a few times 10-9 and of phenanthrene of few times 10-8 are inferred. Toward CPD -32°1734, we found near 3584 Å an absorption line of OH+, which was discovered in the interstellar medium only very recently. Conclusions: The fractional abundances of PAHs inferred here are up to two orders of magnitude lower than estimated total PAH abundances in the interstellar medium. This indicates that either neutral PAHs are not abundant in translucent molecular clouds or that a PAH population with a wide variety of molecules is present. Based on observations collected at the European Southern Observatory, Chile (079.C-0597(A)).

Gredel, R.; Carpentier, Y.; Rouillé, G.; Steglich, M.; Huisken, F.; Henning, Th.

2011-06-01

271

Global Horizontal Irradiance Anomalies in Long Term Series Over India  

Science.gov (United States)

India has a high potential for solar energy applications due to its geographic position within the Sun Belt and the large number of cloudless days in many regions of the country. However, certain regions of India, particularly those largely populated, can exhibit large aerosol loading in the atmosphere as a consequence of anthropogenic emissions that could have a negative feedback in the solar resource potential. This effect, named as solar dimming, has already been observed in India, and in some other regions in the world, by some authors using ground data from the last two decades. The recent interest in the promotion of solar energy applications in India highlights the need of extending and improving the knowledge of the solar radiation resources in this country, since most of the long term measurements available correspond to global horizontal radiation (GHI) and most of them are also located big cities or highly populated areas. In addition, accurate knowledge on the aerosol column quantification and on its dynamical behavior with high spatial resolution is particularly important in the case of India, due to their impact on direct normal irradiation. Long term studies of solar irradiation over India can be performed using monthly means of GHI measurements from the Indian Meteorological Department. Ground data are available from 1964 till today through the World Radiation Data Centre that publish these values in the web. This work shows a long term analysis of GHI using anomalies techniques over ten different sites over India. Besides, techniques of linear trends have been applied for to show the evolution over this period. The analysis of anomalies has also found two periods of different behavior. From 1964 till 1988 the anomalies observed were positive and the last 20 years seems to be a period of negative anomalies. The results exhibit a decreasing trend and negative anomalies confirming thus the darkening effect already reported by solar dimming studies. This observation is also consequent with solar dimming effect, apparently increased during the last two decades due to the increase of aerosol loading in the atmosphere. These results remark the important of having accurate knowledge of atmospheric aerosol loading and its dynamics over India with high spatial resolution in the framework of solar energy deployment in the country. It is worth to mention that greater anomalies and a noticeable decreasing trend found in Calcutta could be correlated with the highly population rate, and thus the greater the population density of the area the greater the negative anomalies and the decreasing trend of solar irradiation monthly means.

Cony, Marco; Liria, Juan; Weisenberg, Ralf; Serrano, Enrique

2014-05-01

272

XII Mi?dzynarodowe Sympozjum Naukowo-Szkoleniowe Sekcji Mikologicznej Polskiego Towarzystwa Dermatologicznego  

Directory of Open Access Journals (Sweden)

Full Text Available W dniach 20-24 wrze?nia 2006 r., odby?o si? XII Mi?dzynarodowe Sympozjum Naukowo-Szkoleniowe Sekcji Mikologicznej Polskiego Towarzystwa Dermatologicznego MIKOLOGIA 2006. Z?ot? polsk? jesieni? przywita?a go?ci Bia?owie?a, wie? po?o?ona w Puszczy Bia?owieskiej, nad rzek? Narewk?, na tzw. Polanie Bia?owieskiej powsta?ej na skutek karczowania lasów. Otoczona rezerwatami przyrody, wyró?niaj?ca si? unikatowym w skali europejskiej dziedzictwem przyrodniczym i kulturowym. To w?a?nie tutaj odpoczywali w?adcy po polowaniach, a przez wieki ?yj? wspólnie Polacy, ?ydzi, Tatarzy, Bia?orusini, Ukrai?cy, Staroobrz?dowcy. Ta mieszanka narodów, przez ich wzajemne oddzia?ywanie, stworzy?a niepowtarzaln? kultur?, której wynikiem s? pi?kne budowle, bogate tradycje i ciekawe obrz?dy, niespotykane nigdzie indziej. Uczestnicy Sympozjum mieli okazj? poznaæ uroki polskiej jesieni, o której tak pi?knie pisa?a Maria Janik: Barwnym tiulem otulona idzie jesie? w pe?nej krasie, z?otych jab?ek i czerwonych, ma w koszyku w swym zapasie. W czarne w?osy ma wplecione cudne ki?cie jarz?biny i otula snem g??bokim, drzewa, kwiaty, pola, niwy. Brzóz ramiona zwisaj?ce wiatr porywa i unosi, i k?aniaj?c si? jej nisko, do ta?ca j? pi?knie prosi. Roz?piewana, rozmarzona, rozta?czona pani jesie?, astrów, malw i chryzantem bukiety nam niesie. W sadach jab?ka na jab?oniach maluje czerwieni?, klony z?otem obsypuje, a sosny zieleni?. Idzie jesie?... Wiatr o smutku ?piewa i jak z?ota mewa, w dal nieznan? mknie za li?ciem li??. Wiatr, wed?ug Jerzego Kerna, najwi?kszy elektroluks ?wiata, który wszystkie drzewa z li?ci poomiata? i baluje w pustej altanie... W tej urokliwej scenerii Sympozjum zorganizowa? Zak?ad Piel?gniarstwa Ogólnego AM w Bia?ymstoku przy wspó?pracy Kliniki Dermatologii i Wenerologii AM w Bia?ymstoku, Katedry i Kliniki Dermatologii, Wenerologii i Alergologii AM w Gda?sku, Zarz?du Sekcji Mikologicznej Polskiego Towarzystwa Dermatologicznego, Polskiego Towarzystwa Lekarskiego Oddzia? Regionalny Bia?ystok. Patronat nad Sympozjum obj?li Jego Magnificencja Rektor Prof. dr hab. med. Jan Górski, Wojewoda Podlaski Jan Dobrzy?ski, Marsza?ek Województwa Podlaskiego Janusz Krzy?ewski oraz Prezydent Miasta Bia?egostoku Ryszard Tur i Wójt Gminy Bia?owie?a Anna Bajko. Obrady rozpocz??y si? w Centrum Kongresowym PAN w Parku Narodowym. Uczestników barwnie powita? Zespó? Pie?ni Ludowej „Ma?anka", dzia?aj?cy od 1990 r. w Domu Kultury w Bielsku Podlaskim, pod kierownictwem artystycznym Sergiusza £u kasz u ka. Zespó? wykona? bia?oruskie pie?ni ludowe popularne na Podlasiu, jak równie? pie?ni ludowe z Polesia oraz polskie pie?ni ludowe z Podlasia. Nast?pnie uczestnicy mieli mo?liwo?? zwiedzenia Muzeum Przyrodniczo-Le?nego, zaprojektowanego przez grup? specjalistów w dziedzinie przyrody, architektury oraz sztuki. W muzeum wszystko jest eksponowane za po?rednictwem dioram, z wykorzystaniem ?rodków ekspresyjnego przekazu - ?wiat?a, d?wi?ku, przestrzeni. Architektura wn?trza oparta jest na planie spirali, a ukszta?towanie pod?ogi, przyciemnione ?wiat?a, efekty dnia i nocy oraz odg?osy puszczy sprawiaj?, ?e po przekroczeniu progu wystawy zwiedzaj?cym wydaje si?, ?e znajduj? si? w ?ród ku dziewiczego lasu. Wra?enia te, dzi?ki obecno?ci przewodników, uzupe?niane s? spor? porcj? wiedzy o przyrodzie i zjawiskach zachodz?cych w Puszczy. Zasadnicze obrady rozpocz??y si? rano 21 wrze?nia. W Sympozjum ??cznie udzia? wzi??o 500 lekarzy dermatologów, mikologów, ale tak?e mikrobiologów, weterynarzy, biolog??w, epidemiologów z kraju i z zagranicy. Komitet honorowy stanowili znakomici zagraniczni mikolodzy: dr Claudia Borelli (Niemcy, prof. Bertrand Dupont (Francja, prof. Jochen Brasch (Niemcy, prof. Gabriele Ginter-Hanselmayer (Austria, prof. Nicole Nolard (Belgia, prof. Jacques E. Meis (Holandia, prof. Martin Schaller (Niemcy, dr Josef Wenning (Niemcy, oraz polscy: prof. dr h

El?bieta Krajewska-Ku?ak

2007-03-01

273

Novel Nitro-PAH Formation from Heterogeneous Reactions of PAHs with NO2, NO3/N2O5, and OH Radicals: Prediction, Laboratory Studies and Mutagenicity  

OpenAIRE

The heterogeneous reactions of benzo[a]pyrene-d12 (BaP-d12), benzo[k]fluoranthene-d12 (BkF-d12), benzo[ghi]perylene-d12 (BghiP-d12), dibenzo[a,i]pyrene-d14 (DaiP-d14), and dibenzo[a,l]pyrene (DalP) with NO2, NO3/N2O5, and OH radicals were investigated at room temperature and atmospheric pressure in an indoor Teflon chamber and novel mono NO2-DaiP, and mono NO2-DalP products were identified. Quartz fiber filters (QFF) were used as a reaction surface and the filter extracts were analyzed by GC/...

Jariyasopit, Narumol; Intosh, Melissa Mc; Zimmermann, Kathryn; Arey, Janet; Atkinson, Roger; Cheong, Paul Ha-yeon; Carter, Rich G.; Yu, Tian-wei; Dashwood, Roderick H.; Simonich, Staci L. Massey

2013-01-01

274

Reactivity of polycyclic aromatic hydrocarbons adsorbed on soot particles  

Science.gov (United States)

Polycyclic aromatic hydrocarbons (PAH) adsorbed on soot particles do not react significantly when exposed to ambient laboratory atmospheres for periods of up to 230 days or to air containing 5 ppm SO 2 for 99 days. Exposure to air containing 10 ppm NO x gave decreasing recoveries of PAH with time. It has been established that the reactivity of PAH under these conditions is anthanthrene > benzo(a)pyrene > benzo(ghi)perylene > benz(a)anthracene > pyrene > benzo(e)pyrene > chrysene > fluoranthene > phenanthrene ~ coronene. Evidence is presented which indicates that even in the absence of photolysis or ozone that PAH in ambient NO x polluted air can be converted to nitro derivatives. These nitration reactions will reduce the carcinogenic content of polluted air, as the 6-nitro-benzo(a)pyrene, 7-nitrobenz(a)anthracene and nitrochrysene derivatives that are formed, in contrast to the parent hydrocarbons, are non-carcinogenic.

Butler, J. D.; Crossley, P.

275

Beryllium dimer: a bond based on non-dynamical correlation.  

Science.gov (United States)

The bond nature in beryllium dimer has been theoretically investigated using high-level ab initio methods. A series of ANO basis sets of increasing quality, going from sp to spdf ghi contractions, has been employed, combined with HF, CAS-SCF, CISD, and MRCI calculations with several different active spaces. The quality of these calculations has been checked by comparing the results with valence Full-CI calculations, performed with the same basis sets. It is shown that two quasi-degenerated partly occupied orbitals play a crucial role to give a qualitatively correct description of the bond. Their nature is similar to that of the edge orbitals that give rise to the quasi-degenerated singlet-triplet states in longer beryllium chains. PMID:24866399

El Khatib, Muammar; Bendazzoli, Gian Luigi; Evangelisti, Stefano; Helal, Wissam; Leininger, Thierry; Tenti, Lorenzo; Angeli, Celestino

2014-08-21

276

Determinação dos hidrocarbonetos saturados e policíclicos aromáticos presentes no material particulado da atmosfera amazônica / Chemical composition of aerosol collected in the amazon forest  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese [...] Abstract in english It was identified and quantified several organic compounds in the atmosphere of a site into Amazon Basin with high impact of biomass burning emission. It was important to know the particulate matter composition with respect to n-alkanes and PAH associated with the particulate matter because they pro [...] vided indication on the main sources contributing to airborne particles, the contribution of natural vs. man-made emission and the aging of the particles. The main classes of compounds observed were n-alkanes, PAH and nitro-PAH. It was observed the formation of nitro-PAH from photochemical reactions. The aerosol mass concentration is mainly associated with fluoranthene, pyrene and benzo(ghi)perylene. Environmental and direct emissions samples (flaming and smoldering) were collected and analysed.

Pérola de Castro, Vasconcellos; Paulo Eduardo, Artaxo; Paulo, Ciccioli; Angelo, Cecinato; Enzo, Brancaleoni; Massimiliano, Frattoni.

1998-07-01

277

Identification of polycyclic aromatic hydrocarbons (PAHs) in suspended particulate matter by synchronous fluorescence spectroscopic technique  

Science.gov (United States)

The synchronous fluorescence (SF) technique has been used in the identification of polycyclic aromatic hydrocarbons (PAHs) from air particulate sample in an urban environment of Delhi, Jawaharlal Nehru University. Suspended particulate matter samples of 24 h duration were collected on glass fiber filter papers. PAHs were extracted from the filter papers using dichloromethane (DCM) + hexane with ultrasonication method. Qualitative measurements of the polycyclic aromatic hydrocarbons (PAHs) were carried out using the SF technique at various wavelength intervals (? ?). Due to the difference in chemical structure, each PAH gives specific characteristic spectrum for each ? ?. Following PAHs were detected in our measurement: benz(a)anthracene (BaA), pyrene (Pyr), chrysene (Chry), fluoranthene (Flan), phenanthrene (Phen), and benz(ghi)perylene (BghiP). This is in agreement with our earlier work for determination of these PAHs using gas chromatography (GC). The seasonal variation of the PAHs was found to be maximum in winter and minimum during the monsoon.

Sharma, Homdutt; Jain, V. K.; Khan, Zahid H.

2007-09-01

278

Quantification of polynuclear aromatic hydrocarbons in industrial waste water using temperature programmed capillary gas chromatography  

International Nuclear Information System (INIS)

Polynuclear aromatic hydrocarbons PAHs have been quantified in waste water of industrialized area of Kalashahkaku (Lahore, Pakistan). The PAHs were isolated from waste water by solvent extraction using dichloromethane (DCM) as extractant. After sample clean-up step and volume reduction under vacuum, the separation of PAHs concentrate into individual constituents is achieved by gas chromatography using flame ionization detector (FID). Mostly high molecular weight PAHs namely pyrene, benzo (a) anthracene, chrysene, benzo (K) fluoranthene, benzo (a) pyrene, benzo (ghi) perylene, indeno (1,2,3 cd) pyrene and coronene have been detected ranging from 41.1 g/l for benzo (a) anthracene to 85.0 g/l for benzo (K) fluoranthene. (author)

279

Structure of elsinochrome A: a perylenequinone metabolite.  

Science.gov (United States)

trans-1,2-Diacetyl-1,2-dihydro-5,10-dihydroxy-3,7,8,12- tetramethoxybenzo[ghi]perylene-4,11-dione, C30H24O10, Mr = 544.51, orthorhombic, P2(1)2(1)2(1), Z = 4, a = 12.428 (3), b = 13.048 (3), c = 14.933 (3) A, V = 2421.5 (9) A3, Dx = 1.494, Dm (by flotation) = 1.48 g cm-3, lambda(Mo K alpha) = 0.71069 A, mu = 1.057 cm-1, F(000) = 1136, T = 293 K, R = 0.046 (2065 observed reflections). Elsinochrome A is shown to exist in the solid state as a nonplanar quinone tautomer; the pigment adopts a helical conformation, in analogy with the related cercosporin, but the perylenequinone moiety in elsinochrome A appears to be significantly less skewed. PMID:2610978

Meille, S V; Malpezzi, L; Allegra, G; Nasini, G; Weiss, U

1989-04-15

280

Actors of the hydrogen sector in France; Les acteurs de l'hydrogene en France  

Energy Technology Data Exchange (ETDEWEB)

This document proposes brief presentations (web site address, activities) of actors operating in the hydrogen sector in France. These actors are public actors who can be incentive or financing actors (ADEME, ANR) or research institutions (CNRS, CEA, university and engineering schools, IFP, INERIS, INRETS), private actors like industrial groups (Air Liquide, AREVA, GDF Suez, Total, PSA Peugeot Citroen, Renault, Saint-Gobain, SNECMA, ST Microelectronics, 3M, Veolia Environnement) or small companies (Alca Torda Applications, Axane, CETH2, Helion, MaHytec, N-GHY, PaxiTech, Sertronic, ULLIT). It also presents the HyPAC platform created by the AFH2 and ADEME), the AFH2 (the French Association for Hydrogen), and regional initiatives

NONE

2010-07-01

281

Hydrogen and fuel cell activity report - France 2010; Rapport d'activites Hydrogene et Piles a combustible - France 2010  

Energy Technology Data Exchange (ETDEWEB)

The report gathers the main outstanding facts which occurred in France in the field of hydrogen and fuel cells in 2010. After having noticed some initiatives (the Grenelle II law, an investment package, the new role of the CEA, the new role of the IFP), the report presents several projects and programs regarding hydrogen: ANR programs, creation of a national structure (the HyPaC platform), regional initiatives and local actions, colloquiums and meetings in France and in the world, research projects (photo-synthesis as a new electric energy source), a technical-economic investigation (HyFrance3), demonstrator projects (the Althytude project by GDF and Suez, the Plathee hybrid locomotive by the SNCF, the H2E project, the Zero CO{sub 2} sailing boat, and the Myrte project), educational applications, activity in small and medium-sized enterprises (CETH, SAGIM, HYCAN, McPhy, N-GHY).

NONE

2010-07-01

282

Perceptions of accounting professionals towards the prospect of implementing fair value under IASB in Vietnamese accounting system: A quantitative study of accounting professionals in Vietnam  

OpenAIRE

Trong khi k? toán giá g?c ?ang ngày càng bi?u hi?n nhi?u y?u ?i?m v? ghi nh?n giá tr? c?a tài s?n và n? trong nhi?u tr??ng h?p k? toán thì ng??c l?i, giá tr? h?p lý l?i ?ang tr? nên ph? bi?n trong k? toán vì nh?ng ?u ?i?m v??t tr?i có th? kh?c ph?c nh??c ?i?m c?a k? toán giá g?c. Giá tr? h?p lý nh?n ???c s? ?ng h? l?n t? H?i ??ng Tiêu chu?n K? toán Qu?c t?...

Nguyen, Ngan Thi Tung

2014-01-01

283

Hydrogen and fuel cell activity report - France 2010  

International Nuclear Information System (INIS)

The report gathers the main outstanding facts which occurred in France in the field of hydrogen and fuel cells in 2010. After having noticed some initiatives (the Grenelle II law, an investment package, the new role of the CEA, the new role of the IFP), the report presents several projects and programs regarding hydrogen: ANR programs, creation of a national structure (the HyPaC platform), regional initiatives and local actions, colloquiums and meetings in France and in the world, research projects (photo-synthesis as a new electric energy source), a technical-economic investigation (HyFrance3), demonstrator projects (the Althytude project by GDF and Suez, the Plathee hybrid locomotive by the SNCF, the H2E project, the Zero CO2 sailing boat, and the Myrte project), educational applications, activity in small and medium-sized enterprises (CETH, SAGIM, HYCAN, McPhy, N-GHY).

284

Hydrogen and fuel cell activity report, France 2009  

International Nuclear Information System (INIS)

This report gathers the main highlights of 2009 in the field of hydrogen and fuel cells in France. It presents the political context (priority to a sustainable development and to renewable energies) and the main initiatives (official commitment, projects and programmes launched by different public bodies and organizations). It briefly presents the projects and programmes concerning the hydrogen: ANR programmes, national structures dedicated to hydrogen and fuel cells, fundamental research, demonstrator project (the H2E project), applications in transport (a project by Peugeot, the Althytude project coordinated by GDF, the Hychain European project, and other airborne or maritime projects), stationary applications (MYRTE). It also briefly describes the activities of some small companies (CETH, McPHY, RAIGI, PRAGMA Industries, N-GHY, SAGIM), and regional initiatives. Colloquiums, congresses and meetings are mentioned

285

Actors of the hydrogen sector in France  

International Nuclear Information System (INIS)

This document proposes brief presentations (web site address, activities) of actors operating in the hydrogen sector in France. These actors are public actors who can be incentive or financing actors (ADEME, ANR) or research institutions (CNRS, CEA, university and engineering schools, IFP, INERIS, INRETS), private actors like industrial groups (Air Liquide, AREVA, GDF Suez, Total, PSA Peugeot Citroen, Renault, Saint-Gobain, SNECMA, ST Microelectronics, 3M, Veolia Environnement) or small companies (Alca Torda Applications, Axane, CETH2, Helion, MaHytec, N-GHY, PaxiTech, Sertronic, ULLIT). It also presents the HyPAC platform created by the AFH2 and ADEME), the AFH2 (the French Association for Hydrogen), and regional initiatives

286

In core gamma dosimetry using thermoluminescence detectors (TLDs) in research reactor  

International Nuclear Information System (INIS)

Since gamma flux co-exists with the neutrons in the reactor core of a research reactor, it becomes difficult to measure exclusively gamma dose rate. Whereas it is quite important to know the gamma dose rates while performing controlled experiments in a research reactor. With this urge experiments have been performed to measure gamma dose rate at central vertical port (CVP) of the University of Florida Training Reactor (UFTR) using thermoluminescence detectors (TLDs). It is demonstrated that among the commercially available TLDs, LiF/sub 2/ can be used to determine the in-core gamma dose rate at low rector power levels (a few hundred watts). The gamma dose rate depending upon reactor power at CVP of UFTR has been determined to be 0.66+- 0.09 Ghy/sup -1/W/sup -1/. Extrapolation of gamma dose higher power is discussed. (author)

287

Entropy function from the gravitational surface action for an extremal near horizon black hole  

CERN Document Server

It is often argued that all the information of a gravitational theory is encoded in the surface term of the action; which means one can find several physical quantities just from the surface term without incorporating the bulk part of the action. This has been observed in various instances; e.g. derivation of the Einstein's equations, surface term calculated on the horizon leads to entropy, etc. Here I investigate the role of it in the context of entropy function and entropy of extremal near horizon black holes. Considering only the Gibbons-Hawking-York (GHY) surface term to define an entropy function for the extremal near horizon black hole solution, it is observed that the extremization of such function leads to the exact value of the horizon entropy. This analysis again supports the previous claim that there exists a "holographic" nature in the gravitational action - surface term contains the information of the bulk.

Majhi, Bibhas Ranjan

2015-01-01

288

Annual variation of total suspended particulate and associated polycyclic aromatic hydrocarbons in the tropical city of Niterói, RJ, Brazil  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: English Abstract in portuguese Este artigo apresenta os resultados da determinação de 12 hidrocarbonetos policíclicos aromáticos (HPAs) em material particulado atmosférico (MPA) coletado na cidade de Niterói, RJ, Brasil. Amostras quinzenais de MPA foram coletadas durante 24 h, entre junho/2005 e maio/2006, no Campus da Universida [...] de Federal Fluminense, localizado em uma área residencial e comercial no Centro de Niterói. Um amostrador de grandes volumes e filtros de fibra de vidro foram usados na coleta de MPA. A concentração média de MPA foi 87 µg m-3. HPAs foram determinados por cromatografia líquida de alta eficiência e detecção por fluorescência após extração em banho de ultra-som. Os limites de detecção e de quantificação foram suficientemente baixos para permitir a detecção dos HPAs nas faixas de concentração observadas. Boas recuperações foram obtidas pela análise do material certificado SRM 1649a (NIST, USA). Fenantreno, benzo[a]antraceno, benzo[b]fluoranteno e benzo[ghi]perileno foram os HPAs predominantes. As concentrações dos HPAs individuais variaram entre 0,001 (antraceno) e 0,357 (fenantreno) ng m-3. As concentrações totais de HPAs variaram entre 0,141 e 1,235 ng m-3. As concentrações individuais e totais de HPAs não apresentaram correlação significativa com a temperatura, umidade relativa e a velocidade do vento. As razões fluoranteno/(fluoranteno + pireno) e benzo[ghi]perileno/indeno[1,2,3-cd]pireno indicaram que a principal fonte de HPAs na área estudada é a emissão veicular. Abstract in english This paper reports the determination of twelve polycyclic aromatic hydrocarbons (PAHs) in total suspended particulate (TSP) collected in Niterói City, RJ, Brazil. Bimonthly 24 h TSP samples were collected between June/2005 and May/2006 in the Campus of Federal Fluminense University that is located i [...] n a mixed residential and commercial neighbourhood in Niterói City Center, Rio de Janeiro State, Brazil. A high volume sampler and glass fibber filters were used to TSP sampling. A mean TSP concentration of 87 µg m-3 was found. PAHs were determined by high-performance liquid chromatography with fluorescence detection following ultrasonic extraction. Limits of detection and of quantification were sufficiently low to accomplish PAH determination in the observed concentration ranges. Good PAH recoveries were obtained by analysis of SRM 1649a (NIST, USA). Phenanthrene, benzo[a]anthracene, benzo[b]fluoranthene and benzo[ghi]perylene were the predominating PAHs. Individual PAH concentrations varied between 0.001 (anthracene) and 0.357 (phenanthrene) ng m-3. Total PAH concentrations varied between 0.141 and 1.235 ng m-3. Individual and total PAH concentrations were not correlated with temperature, relative humidity or wind velocity. The ratios fluoranthene/(fluoranthene + pyrene) and benzo[ghi]perylene/indene[1,2,3-cd]pyrene indicated the main source of PAHs in the studied area was vehicular emission.

Fernanda de Melo, Lima; Annibal D., Pereira Netto.

289

Certified reference material for traceability in environmental analysis: PAHs in toluene  

Scientific Electronic Library Online (English)

Full Text Available Material de referência certificado (CRM) desempenha um papel vital para a garantia de controle em análises ambientais, uma vez que a qualidade dos dados resultantes de medições ambientais tem importância crucial. Este artigo apresenta os resultados de estudos realizados para a certificação dos compo [...] stos planejados como candidato a material de referência, que são dezesseis hidrocarbonetos policíclicos aromáticos (PAHs) dissolvidos em tolueno (naftaleno, acenaftileno, acenafteno, fluoreno, antraceno, fenantreno, fluoranteno, criseno, benzo[a]antraceno, pireno, benzo[k]fluoranteno, benzo[b]fluoranteno, benzo[a]pireno, dibenzo[a, h]anthaceno, indeno[1, 2, 3-cd]pireno e benzo[ghi]perileno). Este é o primeiro CRM brasileiro de PAH desenvolvido pelo Inmetro. O processo de certificação inclui a validação do método GC/IDMS (espectrometria de massa de diluição isotópica acoplada a cromatografia gasosa), o estudo de homogeneidade, a estabilidade em condição de transporte e de armazenamento, além de cálculo de incertezas de medição. Abstract in english Certified reference material (CRM) plays a vital role for quality control assurance in environmental analysis, because the quality of data arising from measurements has crucial importance. This article presents the results from studies carried out for certification of a candidate reference material [...] composed by sixteen polycyclic aromatic hydrocarbons (PAHs) dissolved in toluene (naphthalene, acenaphthylene, acenaphtene, fluorene, anthracene, phenanthrene, fluoranthene, chrysene, benzo[a]anthracene, pyrene, benzo[k]fluoranthene, benzo[b]fluoranthene, benzo[a]pyrene, dibenzo[a,h]anthacene, indeno[123-cd]pyrene and benzo[ghi]perylene). This is the first Brazilian PAH CRM developed by Inmetro. The certification procedure includes validation of the GC/IDMS method (isotopic dilution mass spectrometry coupled to gas chromatography), homogeneity study, stability studies under transport and storage conditions and estimation of measurement uncertainties.

Evelyn de F., Guimarães; Eliane C. P. do, Rego; Helen C. M., Cunha; Janaína M., Rodrigues; José Daniel, Figueroa-Villar.

2014-02-01

290

Impact of aerosols on the forecast accuracy of solar irradiance calculated by a numerical weather prediction model  

Science.gov (United States)

The impact of aerosols on the forecast accuracy of solar irradiance calculated by a fine-scale, one day-ahead, and operational numerical weather prediction model (NWP) is investigated in this study. In order to investigate the impact of aerosols only, the clear sky period is chosen, which is defined as when there are no clouds in the observation data and in the forecast data at the same time. The evaluation of the forecast accuracy of the solar irradiance is done at a single observation point that is sometimes affected by aerosol events. The analysis period is one year from April 2010 to March 2011. During the clear sky period, the root mean square errors (RMSE) of the global horizontal irradiance (GHI), direct normal irradiance (DNI), and diffuse horizontal irradiance (DHI) are 40.0 W m-2, 84.0 Wm-2, and 47.9 W m-2, respectively. During one extreme event, the RMSEs of the GHI, DNI, and DHI are 70.1 W m-2, 211.6 W m-2, and 141.7 W m-2, respectively. It is revealed that the extreme events were caused by aerosols such as dust or haze. In order to investigate the impact of the aerosols, the sensitivity experiments of the aerosol optical depth (AOD) for the extreme events are executed. The best result is obtained by changing the AOD to 2.5 times the original AOD. This changed AOD is consistent with the satellite observation. Thus, it is our conclusion that an accurate aerosol forecast is important for the forecast accuracy of the solar irradiance.

Shimose, Ken-ichi; Ohtake, Hideaki; Fonseca, Joao Gari da Silva; Takashima, Takumi; Oozeki, Takashi; Yamada, Yoshinori

2014-10-01

291

Engineering of Pseudomonas taiwanensis VLB120 for constitutive solvent tolerance and increased specific styrene epoxidation activity.  

Science.gov (United States)

The application of whole cells as biocatalysts is often limited by the toxicity of organic solvents, which constitute interesting substrates/products or can be used as a second phase for in situ product removal and as tools to control multistep biocatalysis. Solvent-tolerant bacteria, especially Pseudomonas strains, are proposed as promising hosts to overcome such limitations due to their inherent solvent tolerance mechanisms. However, potential industrial applications suffer from tedious, unproductive adaptation processes, phenotypic variability, and instable solvent-tolerant phenotypes. In this study, genes described to be involved in solvent tolerance were identified in Pseudomonas taiwanensis VLB120, and adaptive solvent tolerance was proven by cultivation in the presence of 1% (vol/vol) toluene. Deletion of ttgV, coding for the specific transcriptional repressor of solvent efflux pump TtgGHI gene expression, led to constitutively solvent-tolerant mutants of P. taiwanensis VLB120 and VLB120?C. Interestingly, the increased amount of solvent efflux pumps enhanced not only growth in the presence of toluene and styrene but also the biocatalytic performance in terms of stereospecific styrene epoxidation, although proton-driven solvent efflux is expected to compete with the styrene monooxygenase for metabolic energy. Compared to that of the P. taiwanensis VLB120?C parent strain, the maximum specific epoxidation activity of P. taiwanensis VLB120?C?ttgV doubled to 67 U/g of cells (dry weight). This study shows that solvent tolerance mechanisms, e.g., the solvent efflux pump TtgGHI, not only allow for growth in the presence of organic compounds but can also be used as tools to improve redox biocatalysis involving organic solvents. PMID:25128338

Volmer, Jan; Neumann, Christoph; Bühler, Bruno; Schmid, Andreas

2014-10-01

292

A transfer function for the prediction of gas hydrate inventories in marine sediments  

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Full Text Available A simple prognostic tool for gas hydrate (GH quantification in marine sediments is presented based on a diagenetic transport-reaction model approach. One of the most crucial factors for the application of diagenetic models is the accurate formulation of microbial degradation rates of particulate organic carbon (POC and the coupled biogenic CH4 formation. Wallmann et al. (2006 suggested a kinetic formulation considering the ageing effects of POC and accumulation of reaction products (CH4, CO2 in the pore water. This model is applied to data sets of several ODP sites in order to test its general validity. Based on a thorough parameter analysis considering a wide range of environmental conditions, the POC accumulation rate (POCar in g/cm2/yr and the thickness of the gas hydrate stability zone (GHSZ in m were identified as the most important and independent controls for biogenic GH formation. Hence, depth-integrated GH inventories in marine sediments (GHI in g of CH4 per cm2 seafloor area can be estimated as:

GHI = a · POCar · GHSZb · exp (?GHSZc/POCar/d + e

with a = 0.00214, b = 1.234, c = ?3.339, d = 0.3148, e = ?10.265.

Several tests indicate that the transfer function gives a realistic approximation of the minimum potential GH inventory of low gas flux (LGF systems. The overall advantage of the presented function is its simplicity compared to complex numerical models: only two easily accessible parameters are needed.

M. Marquardt

2010-02-01

293

A transfer function for the prediction of gas hydrate inventories in marine sediments  

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Full Text Available A simple prognostic tool for gas hydrate (GH quantification in marine sediments is presented based on a diagenetic transport-reaction model approach. One of the most crucial factors for the application of diagenetic models is the accurate formulation of microbial degradation rates of particulate organic carbon (POC and the coupled formation of biogenic methane. Wallmann et al. (2006 suggested a kinetic formulation considering the ageing effects of POC and accumulation of reaction products (CH4, CO2 in the pore water. This model is applied to data sets of several ODP sites in order to test its general validity. Based on a thorough parameter analysis considering a wide range of environmental conditions, the POC accumulation rate (POCar in g/m2/yr and the thickness of the gas hydrate stability zone (GHSZ in m were identified as the most important and independent controls for biogenic GH formation. Hence, depth-integrated GH inventories in marine sediments (GHI in g of CH4 per cm2 seafloor area can be estimated as:

GHI = a · POCar · GHSZb · exp (– GHSZc/POCar/d + e

with a = 0.00214, b = 1.234, c = –3.339,

        d = 0.3148, e = –10.265.

The transfer function gives a realistic first order approximation of the minimum GH inventory in low gas flux (LGF systems. The overall advantage of the presented function is its simplicity compared to the application of complex numerical models, because only two easily accessible parameters need to be determined.

M. Marquardt

2010-09-01

294

Oxygen isotope geochemistry of the Granite Harbour Intrusives, Wilson Terrane, Northern Victoria Land, Antarctica  

International Nuclear Information System (INIS)

The oxygen and strontium isotope compositions of the Cambro-Ordovician granitoids cropping out in the Wilson Terrane (Granite Harbour Intrusives-GHI) constrain the petrological evolution of the magmatism in Antarctica, related to the Ross Orogeny. The measured ?18OWR values of three intrusives define three different compositional groups: the metaluminous rocks (MAG), with ?18OWR ranging from 6.9 (olivine gabbro) to 11.4 %o (monzogranite); the unaltered peraluminous granites (PAG), having ?18OWR values ranging from 10.6 to 13.2 %o, and the foliated peraluminous leucogranites (SKG), characterized by ?18OWR values above 14 %o. The analysis of equilibrium mineral assemblages indicates that the high ?18OWR values are magmatic and unaffected by low-temperature processes. A few peraluminous granites sampled in the vicinity of Cenozoic intrusions show anomalously low ?18OWR, due to meteoric-hydrothermal alteration. The isotopic data indicate that the coeval and spatially related metaluminous mafic and felsic intrusives forming the GHI were not comagmatic: the mafic and intermediate rocks were likely derived from lower crustal contamination of a pristine basaltic magma; their ?18OWR values were also increased during emplacement, due to the interaction with the adjacent 18O-rich hydrous felsic magmas (mixing)rich hydrous felsic magmas (mixing). Oxygen isotope data indicate that the crustal sources producing the granite harbor intrusives were not homogeneous: the felsic metaluminous intrusives were produced by partial melting of fertile rock with possible igneous origin, whereas partial melting of a metapelitic source rock is claimed for the genesis of the peraluminous granites. (author)

295

Evaluation of errors made in solar irradiance estimation due to averaging the Angstrom turbidity coefficient  

Science.gov (United States)

Even though the monitoring of solar radiation experienced a vast progress in the recent years both in terms of expanding the measurement networks and increasing the data quality, the number of stations is still too small to achieve accurate global coverage. Alternatively, various models for estimating solar radiation are exploited in many applications. Choosing a model is often limited by the availability of the meteorological parameters required for its running. In many cases the current values of the parameters are replaced with daily, monthly or even yearly average values. This paper deals with the evaluation of the error made in estimating global solar irradiance by using an average value of the Angstrom turbidity coefficient instead of its current value. A simple equation relating the relative variation of the global solar irradiance and the relative variation of the Angstrom turbidity coefficient is established. The theoretical result is complemented by a quantitative assessment of the errors made when hourly, daily, monthly or yearly average values of the Angstrom turbidity coefficient are used at the entry of a parametric solar irradiance model. The study was conducted with data recorded in 2012 at two AERONET stations in Romania. It is shown that the relative errors in estimating global solar irradiance (GHI) due to inadequate consideration of Angstrom turbidity coefficient may be very high, even exceeding 20%. However, when an hourly or a daily average value is used instead of the current value of the Angstrom turbidity coefficient, the relative errors are acceptably small, in general less than 5%. All results prove that in order to correctly reproduce GHI for various particular aerosol loadings of the atmosphere, the parametric models should rely on hourly or daily Angstrom turbidity coefficient values rather than on the more usual monthly or yearly average data, if currently measured data is not available.

Calinoiu, Delia-Gabriela; Stefu, Nicoleta; Paulescu, Marius; Trif-Tordai, Gavril?; Mares, Oana; Paulescu, Eugenia; Boata, Remus; Pop, Nicolina; Pacurar, Angel

2014-12-01

296

Monitoreo del glaciar horcones inferior y sus termokarst, antes y durante el surge de 2003-2006: Andes centrales argentinos  

Scientific Electronic Library Online (English)

Full Text Available En el presente trabajo se expone el monitoreo de termokarts glaciarios y su relación e interacción con los eventos surges ocurridos en el glaciar cubierto Horcones Inferior (GHI). Este glaciar se encuentra ubicado a los 32º 41'S y 69º 57'W, al pie de la pared sur del C° Aconcagua, Parque Provincial [...] Aconcagua, en la Provincia de Mendoza, Argentina. El estudio fue llevado a cabo a través de la implementación de métodos indirectos de detección utilizando imágenes de los sensores Landsat y Aster durante el período 1997-2006. En el Glaciar Horcones Inferior "GHI", la superficie ocupada por los termokarst alcanza valores que varían entre el 4.3% y el 0% de la superficie total del glaciar, al finalizar un evento de surge. Las velocidades registradas en la superficie del glaciar cubierto arrojaron valores promedios entre 0.4 y 12 m/día. La metodología aplicada, con imágenes satelitales históricas, representa una herramienta fundamental para separar períodos de flujo glaciario catastróficos y no catastróficos. Abstract in english This work analyses the temporal evolution of thermokarst and their relationship to the surges in a reconstituted debris covered glacier. The glacier Horcones Inferior is located at Lat 32º 41' S and Long 69º 57' W in the Provincial Park Aconcagua, Mendoza, Argentina, on the foot of the Aconcagua mas [...] sif. The study and monitoring of the thermokarst was carried out applying indirect methods using Landsat and Aster images from 1997-2006. Detected percentages of thermokarst, in relation to the total glacial area, showed that they varied between 4.3% to 0% at the end of the surge event. The registered speeds of the glacier -on the glacial surface- reached averages of between 0.4 and 12 m/d. This methodology, with historical images from archives, represents a fundamental tool to separate catastrophic and non-catastrophic glacial flow periods.

María Gabriela, Lenzano; Darío, Trombotto Liaudat; Juan Carlos, Leiva.

2012-12-01

297

Hidrocarbonetos policíclicos aromáticos (HPAs) em aguardentes / PHAs in spirits  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese A presença de hidrocarbonetos aromáticos polinucleares (HPAs) em aguardentes foi investigada por cromatografia líquida (CLAE) após sua prévia extração em fase sólida (SPE). A separação foi realizada em uma coluna Supelco, LCPAH-octadecil silano (25cm x 4,6mm x 5mm) com gradiente acetonitrila/água e [...] a quantificação utilizando detector de fluorescência. Os HPAs (naftaleno; acenaftaleno; fluoreno; fenantreno; antraceno; fluoranteno; pireno; 1,2- benzo(e)pireno; criseno; benzo(e)pireno; 2,3-benzo(a)antraceno; 1,2-benzo(b)fluoranteno; benzo(k)fluoranteno; dibenzo(a,h)antraceno; benzo(a)pireno; benzo(ghi)pirileno foram identificados e quantificados em vinte e oito amostras de aguardentes de cana. Os resultados experimentais para as amostras de aguardentes (cachaças) são analisados em termos de análises de componentes principais (PCA) objetivando a diferenciação entre o perfil das aguardentes produzidas a partir de cana-de-açúcar queimada e não-queimada. Abstract in english The presence of PHAs (polycyclic aromatic hydrocabons) in spirits has been investigated using high performance liquid chromatography (HPLC) after solid phase extraction (SPE). The separation was achieved with a Supelco LCPAH-octadecil silane column [25cm x 4,6mm x 5mm] and acetonitrile/water elution [...] gradient and the quantification using a fluorescence detector. The PHAs (naphthalene; acenaphthene; fluorene; phenantrene; anthracene; phuorantene; pyrene; 1,2-benzo(e)pyrene; chrysene; benzo(e)pyrene; 2,3-benzo(a)anthracene; 1,2-benzo(b)phluoranthene; benzo(k)fluoranthene; dibenzo(a,h)anthracene; benzo(a)pyreno; benzo(ghi)pyrilene were quantifed in twenty eight samples of sugar cane spirits. All the experimental data for sugar cane spirit have been analyzed through principal components analysis (PCA) aiming to compare the chemical profile of beverages produced from burned and not burned sugar cane.

S. M., Bettin; D. Wagner, Franco.

2005-06-01

298

Source apportionment of elevated wintertime PAHs by compound-specific radiocarbon analysis  

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Full Text Available Natural abundance radiocarbon analysis facilitates distinct source apportionment between contemporary biomass/biofuel (14C "alive" versus fossil fuel (14C "dead" combustion. Here, the first compound-specific radiocarbon analysis (CSRA of atmospheric polycyclic aromatic hydrocarbons (PAHs was demonstrated for a set of samples collected in Lycksele, Sweden a small town with frequent episodes of severe atmospheric pollution in the winter. Renewed interest in using residential wood combustion (RWC means that this type of seasonal pollution is of increasing concern in many areas. Five individual/paired PAH isolates from three pooled fortnight-long filter collections were analyzed by CSRA: phenanthrene, fluoranthene, pyrene, benzo[b+k]fluoranthene and indeno[cd]pyrene plus benzo[ghi]perylene; phenanthrene was the only compound also analyzed in the gas phase. The measured ?14C for PAHs spanned from ?138.3‰ to 58.0‰. A simple isotopic mass balance model was applied to estimate the fraction biomass (fbiomass contribution, which was constrained to 71–87% for the individual PAHs. Indeno[cd]pyrene plus benzo[ghi]perylene had an fbiomass of 71%, while fluoranthene and phenanthrene (gas phase had the highest biomass contribution at 87%. The total organic carbon (TOC, defined as carbon remaining after removal of inorganic carbon fbiomass was estimated to be 77%, which falls within the range for PAHs. This CSRA data of atmospheric PAHs established that RWC is the dominating source of atmospheric PAHs to this region of the boreal zone with some variations among RWC contributions to specific PAHs.

R. J. Sheesley

2009-05-01

299

Ecuación Predictora de Masa Grasa Corporal en Deportistas con Lesión Medular Crónica: Estudio Piloto / Predictive Equation of Body Fat Percentage in Athletes with Chronic Spinal Cord Injury: A Pilot Study  

Scientific Electronic Library Online (English)

Full Text Available La determinación del porcentaje de masa grasa en pacientes con lesión medular crónica (LMC) resulta de interés por la alta morbimortalidad cardiovascular que presenta este grupo. En el caso de deportistas, además, permitiría optimizar su rendimiento deportivo. Por consiguiente, el presente estudio s [...] e planteó como primer objetivo comparar diferentes métodos de estudio del porcentaje de masa grasa de deportistas con LMC. Y como objetivo secundario, identificar alguna ecuación que permita predecir los niveles de masa grasa de manera más económica, sencilla, rápida y no invasiva. Se diseño un estudio observacional y transversal en el que participaron voluntariamente 8 deportistas varones con LMC a nivel o por debajo de T5 que compiten a nivel nacional. El porcentaje de masa grasa corporal de los participantes se determinó mediante tres metodologías: densitometría (DEXA), antropometría convencional (Ecuación de Siri) e impedancia bioeléctrica (BIA). Este protocolo fue aprobado por un Comité de Ética Institucional. El porcentaje de masa grasa presentado por jugadores de baloncesto en silla de ruedas tras someterse al método de referencia (DEXA) fue del 28,76±9,16%. El análisis de concordancia de Bland-Altman entre métodos sugiere que tanto la antropometría convencional como la BIA subestiman el porcentaje de masa grasa de deportistas con LMC. la ecuación de predicción obtenida fue: Masa Grasa (%)= 1,9197 (pliegue tríceps (mm)) + 6,5063. Tanto las técnicas antropométricas convencionales como la propia BIA subestiman la masa grasa en deportistas con LMC. Asimismo se ha identificado una ecuación de regresión para la predicción del porcentaje de masa grasa de bajo coste y aplicable en cualquier entorno. Abstract in english The assessment of fat mass (FM) is of great interest for people with chronic spinal cord injury (SCI) given that morbidity and mortality from cardiovascular disease are greater and occur earlier in this group. Furthermore, it may play a key role improving physical performance in athletes with SCI. F [...] or the reasons already mentioned, the current study was designed to compare different methods for assessing FM in athletes with SCI. A secondary objective was to identify a predictive equation for FM in this group that is easily reproducible elsewhere. A total of 8 male athletes with complete SCI at or below the 5th thoracic level (T5) competing in a national league volunteered for this study. The percentage of FM was assessed by three different methods: conventional anthropometry (Siri equation), bioelectrical impedance analysis (BIA) and densitometry (DEXA). This research was conducted in full accordance with ethical principles, including the World Medical Association Declaration of Helsinki (version, 2002). Furthermore, the present protocol was approved by an Institutional Ethics Committee. Mean percentage of FM assessed by DXA was 28.76±9.16%. Moreover, Bland-Altman plots suggested conventional anthropometry and BIA underestimated fat mass percentage in this group. Lastly, a predictive equation for fat mass was established as follows: FM (%)=1.9197 (triceps skinfold thickness (mm))+6.5063. It was concluded that both conventional anthropometry and BIA underestimated fat mass in athletes with chronic SCI. Furthermore, a predictive equation of fat mass was recommended for this group due to its low cost and wide availability in any clinical setting.

F. J, Ordonez; I, Rosety; G, Fornieles; A, Rodriguez-Pareja; M. A, Rosety; J. R, Alvero-Cruz; M, Rosety-Rodriguez.

2014-03-01

300

A two-phase population study: relationships between overweight, body composition and risk of eating disorders Estudio a doble fase: relación entre el sobrepeso, la composición corporal y el riesgo de trastorno de la conducta alimentaria  

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Full Text Available Background: Overweight and eating disorder (ED are major public health problems in adolescents. Aims: To assess the association of overweight, body composition and anthropometric characteristics with the probability being at risk of ED. Methods: A two-phase study was used. 329 girls and 96 boys (aged 12-18 years from an initial sample of 2967 adolescents were studied. The BMI, percentage of fat mass estimated by bioimpedance (FM(BIA, waist circumference, waist-to-height ratio, and waist-to-hip ratio (WHipr were calculated. The Eating Attitudes Test, Youth's Inventory-4 and a questionnaire to evaluate social influences were administered. Results: A total of 34.7% of girls and 53.6% of boys at risk of ED were overweight (including obesity. For girls, overweight frequency was significantly higher in risk ED group than in control group. Increases of one point in the BMI or FM(BIA increased the probability of being at risk of ED by 12% (3.0-19.0 and 4% (0.0-8.0, respectively. An increase in Whipr was negatively associated with ED risk. Smoking and symptoms of dysthymia and the genralized anxiety disorder also increase the probability of being at risk of ED in adolescent girls. In adolescent boys, these relations were not observed. Conclusions: The higher BMI and the percentage of FM(BIA are associated with greater risk of ED in adolescent girls, when psychological factors are present. Increases in the WHipr, characteristic of childhood body is negatively associated with that risk.Introducción: El sobrepeso y los Trastornos de la Conducta Alimentaria (TCA son problemas importantes de salud pública entre los adolescentes. Objetivos: Valorar la asociación del sobrepeso, la composición corporal y otras características antropométricas con la probabilidad de estar en riesgo de desarrollar un TCA. Métodos: Se realizó un estudio con un diseño en doble fase. Se estudiaron 329 chicas y 96 chicos (de 12-18 años procedentes de una muestra inicial de 2967 adolescentes. Se calcularon el índice de masa corporal (IMC, el porcentaje de masa grasa (% MG(BIA, la circunferencia de la cintura, los cocientes cintura-talla y cintura-cadera. Se administraron el Eating Attitudes Test, el Youth's Inventory-4 y un cuestionario para evaluar influencia sociocultural. Resultados: El 34,7% de las chicas y el 53,6% de los chicos con riesgo de TCA presentan sobrepeso (incluyendo obesidad. La frecuencia de sobrepeso es significativamente más alta en las chicas del grupo de riesgo de TCA que las del grupo control. En las adolescentes, el aumento de un punto en el IMC o en el % MG(BIA incrementa el riesgo de estar en riesgo de TCA en 12% (3,0-19,0 y 4% (0,0-8,0, respectivamente; un incremento en el cociente cintura-cadera se asocia negativamente con el riesgo de TCA. Fumar, presentar síntomas de distimia y de trastornos de ansiedad generalizada también se asociaron con la probabilidad de estar en riesgo de TCA, en las adolescentes. En los varones, no se han observado esas relaciones. Conclusiones: El mayor IMC y de % MG(BIA se asocian con mayor riesgo de TCA en las adolescentes cuando los factores psicológicos están presentes. Un aumento en el cociente cintura-cadera, característico de un cuerpo infantil, se asocia negativamente con el riesgo de TCA.

N. Babio

2009-08-01

301

Efecto de la realimentación en la composición corporal de mujeres con anorexia nerviosa restrictiva: antropometría frente a impedancia bioeléctrica / Effect of refeeding on the body composition of females with restrictive anorexia nervosa: anthropometry versus bioelectrical impedance  

Scientific Electronic Library Online (English)

Full Text Available Objetivo: Evaluar la composición corporal en un grupo de pacientes desnutridas con anorexia nerviosa, respecto de controles sanas, antes y después del soporte nutricional, mediante antropometría y bioimpedancia. Métodos: Estudio observacional prospectivo. Se realizó una antropometría completa y un a [...] nálisis de bioimpedancia a 12 mujeres con anorexia nerviosa restrictiva (24,5 años) al ingreso hospitalario y semanalmente durante la realimentación. El grupo control estuvo formado por 24 mujeres sanas (21 años). Se aplicaron los test t-Student, U-Mann-Whitney, t-Student para medidas repetidas o Wilcoxon. La concordancia entre antropometría y BIA se analizó mediante el coeficiente de correlación intraclase y Bland-Altman. Resultados: Las pacientes mejoraron significativamente todos los índices de composición corporal a lo largo de la estancia hospitalaria, aunque sus valores al alta siguieron siendo menores que los de las controles. La media de peso ganado fue 5,22 kg (DE: 1,42), de los que el 51,4% fueron masa grasa, con distribución central preferentemente. En las controles la ecuación de BIA que mejor concuerda con antropometría es la de Sun (CCI = 0,896); en las pacientes la concordancia fue más débil, al ingreso y al alta. Conclusiones: La realimentación produce una ganancia ponderal, fundamentalmente a expensas de masa grasa, con distribución central; no se consigue restablecer el estado nutricional. La concordancia entre antropometría y bioimpedancia para el estudio de la composición corporal es aceptable, especialmente en sujetos sanos. Se recomienda emplear antropometría, si no se dispone de BIA vectorial o algún método gold estandard para el análisis de la composición corporal, en casos de alteraciones importantes en la composición corporal y/o el balance hídrico. Abstract in english Objective: To assess the body composition in a group of malnourished patients with anorexia nervosa as compared to healthy controls, before and after nutritional support, by means of anthropometry and bioimpedance. Methods: Prospective observational study. Complete anthropometry was performed as wel [...] l as bioimpedance analysis in 12 women (24.5 years) with restrictive anorexia nervosa at hospital admission and weekly thereafter during re-feeding. The control group was formed by 24 healthy women (21 years). The Student's t test, the Mann-Whitney U test, the Student's t test for repeated measurements, and the Wilcoxon's test were applied. The level of agreement between anthropometry and BIA was calculated by the interclass correlation coefficient and the Bland-Altman s test. Results: The patients had significant improvements in all indexes of body composition throughout their hospital staying although their values at discharge still were lower than those of the control subjects. The average weight gain was 5.22 kg (SD: 1.42), of which 51.4% was fat mass, preferentially centrally distributed. In the control subjects, the BIA equation that correlated the best with anthropometrics was Sun s equation (CCI = 0.896); in the patients, the level of agreement was weaker, both at hospital admission and at hospital discharge. Conclusions: Re-feeding produces weight gain, essentially at the expense of fat mass, which is centrally distributed; the nutritional status is not reestablished. The level of agreement between anthropometry and bioimpedance for studying body composition is acceptable, especially in healthy subjects. In those cases with severe changes in body composition and/or water balance, anthropometry is recommended when vectorial BIA or some other gold standard method are not available for the analysis of body composition.

Beatriz de, Mateo Silleras; Paz, Redondo del Río; Alicia, Camina Martín; María, Soto Célix; Sara R., Alonso Torre; Alberto, Miján de la Torre.

1717-17-01

302

Comparison of bioelectrical impedance with skinfold thickness and X-ray absorptiometry to measure body composition in HIV-infected with lipodistrophy Comparación de impendancia bioeléctrica con grosor de pliegues cutáneos y absorciometría de rayos X para mensurar la composición corporal de personas con VIH con lipodistrofia  

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Full Text Available Introduction: Human immunodeficiency vírus (HIV-associated lipodystrophy syndrome (LS includes body composition and metabolic alterations. Lack of validated criteria and tools make difficult to evaluate body composition in this group. Objective: The aim of the study was to compare different methods to evaluate body composition between Brazilians HIV subjects with (HIV+LIPO+ or without LS (HIV+LIPO- and healthy subjects (Control. Methods: in a cross-sectional analyses, body composition was measured by bioelectrical impedance analysis (BIA, skinfold thickness (SF and dual-energy x-ray absorptiometry (DXA in 10 subjects from HIV+LIPO+ group; 22 subjects from HIV+LIPO- group and 12 from Control group. Results: There were no differences in age and body mass index (BMI between groups. The fat mass (FM (% estimated by SF did not correlate with DXA in HIV+LIPO+ group (r = 0,46/ p > 0,05 and had fair agreement in both HIV groups (HIV+LIPO+ =0,35/ HIV+ LIPO- = 0,40. BIA had significant correlation in all groups (p Introducción: El síndrome de lipodistrofia (SL asociado al virus de inmunodeficiencia humana (HIV incluye alteraciones en la composición corporal y metabólica. La falta de herramientas adecuadas y criterios válidos dificultan la evaluación de la composición corporal en este grupo. Objetivo: El objetivo del estudio fue comparar distintos métodos para evaluar la composición corporal entre individuos brasileños con HIV que teniam (HIV+LIPO+ o no LS (HIV+LIPO- e individuos sanos (control. Métodos: Estudio transversal en el que fue evaluada la composición corporal por análisis de impedancia bioeléctrica (BIA, pliegues cutáneos (SF y absorciometría de rayos X de doble energía (DXA en un grupo de 10 individuos con HIV+LIPO+, 22 individuos del grupo HIV+ LIPO- y 12 individuos del grupo control. Resultados: No hubo diferencias en la edad e índice de masa corporal (IMC entre grupos. La masa grasa (MG (% estimada por SF no se correlacionó con DXA en pacientes del grupo HIV+LIPO+ (r = 0,46 / p> 0,05 y había leve concordancia en ambos grupos con HIV (HIV+LIPO+ = 0,35/ HIV+LIPO- = 0,40. BIA tuvo una correlación significativa en todos los grupos (p <0,05 y fuerte acuerdo, principalmente en grupos HIV para MG (HIV+LIPO+ = 0,79 / HIV+LIPO- = 0,85 / Control = 0,60 y para la masa libre de grasa (HIV+LIPO+ = 0,93/ HIV+LIPO- = 0,92 / Control = 0,73. Discusión: La masa grasa total puede ser medida por BIA con precisión, pero no por SF en los individuos con HIV y LS. BIA segmentario, SF del tríceps, circunferencia de brazos, cintura y piernas, pueden ser alternativas que necesiten más estudios.

H. Siqueira Vassimon

2011-06-01

303

Predicting total weight of retail-ready lamb cuts from bioelectrical impedance measurements taken at the processing plant.  

Science.gov (United States)

Data of sixty finished, crossbred lambs were used to develop prediction equations of total weight of retail-ready cuts (SUM). These cuts were the leg, sirloin, loin, rack, shoulder, neck, riblets, shank, and lean trim (85/15). Measurements were taken on live lambs and on both hot and cold carcasses. A four-terminal bioelectrical impedance analyzer (BIA) was used to measure resistance (Rs, ohms) and reactance (Xc, ohms). Distances between detector terminals (L, centimeters) were recorded. Carcass temperatures (T, degrees C) at time of BIA readings were also recorded. The equation predicting SUM from cold carcass measurements (n = 53, R2 = .97) was .093 + .621 x weight-.0219 x Rs + .0248 x Xc + .182 x L-.338 x T. Resistance accounted for variability in SUM over and above weight and L (P = .0016). The above equation was used to rank cold carcasses in descending order of predicted SUM. An analogous ranking was obtained from a prediction equation that used weight only (R2 = .88). These rankings were divided into five categories: top 25%, middle 50%, bottom 25%, top 50%, and bottom 50%. Within-category differences in average fat cover, yield grade, and SUM as a percentage of cold carcass weight of carcasses not placed in the same category by both prediction equations were quantified with independent t-tests. These differences were statistically significant for all categories except middle 50%. This shows that BIA located those lambs that could more efficiently contribute to SUM because a higher portion of their weight was lean. PMID:8071171

Slanger, W D; Marchello, M J; Busboom, J R; Meyer, H H; Mitchell, L A; Hendrix, W F; Mills, R R; Warnock, W D

1994-06-01

304

Equity in the allocation of public sector financial resources in low- and middle-income countries: a systematic literature review.  

Science.gov (United States)

This review aims to identify, assess and analyse the evidence on equity in the distribution of public health sector expenditure in low- and middle-income countries. Four bibliographic databases and five websites were searched to identify quantitative studies examining equity in the distribution of public health funding in individual countries or groups of countries. Two different types of studies were identified: benefit incidence analysis (BIA) and resource allocation comparison (RAC) studies. Quality appraisal and data synthesis were tailored to each study type to reflect differences in the methods used and in the information provided. We identified 39 studies focusing on African, Asian and Latin American countries. Of these, 31 were BIA studies that described the distribution, typically across socio-economic status, of individual monetary benefit derived from service utilization. The remaining eight were RAC studies that compared the actual expenditure across geographic areas to an ideal need-based distribution. Overall, the quality of the evidence from both types of study was relatively weak. Looking across studies, the evidence confirms that resource allocation formulae can enhance equity in resource allocation across geographic areas and that the poor benefits proportionally more from primary health care than from hospital expenditure. The lack of information on the distribution of benefit from utilization in RAC studies and on the countries' approaches to resource allocation in BIA studies prevents further policy analysis. Additional research that relates the type of resource allocation mechanism to service provision and to the benefit distribution is required for a better understanding of equity-enhancing resource allocation policies. PMID:24837639

Anselmi, Laura; Lagarde, Mylene; Hanson, Kara

2014-05-16

305

Validity of dual X-ray absorptiometry scanning for determination of body composition in IDDM patients.  

DEFF Research Database (Denmark)

Data on body composition in patients with insulin-dependent diabetes mellitus (IDDM) are scarce. Dual X-ray absorptiometry (DXA) scanning has proved useful for this purpose in other groups of patients. We tested the validity of the DXA scanner for the determination of fat-free mass (FFM) and fat mass in IDDM patients and control subjects, as compared to other reference methods, i.e. total body potassium by 40K whole body counting (TBK), total body water by tritiated water (TBW), bioelectrical impedance analysis (BIA) and 24-h urinary creatinine excretion (Ucrea). A total of 13 healthy controls, 5 males and 8 females, aged 34.2 years +/- SD 10.4, and 11 IDDM patients, 5 males, 6 females, aged 28.1 years +/- 7.3, diabetes duration 4.2 +/- 2.9 (1.0-9.9), were examined. The patients had no long-term diabetic complications and they had normal ophthalmoscopy and urine albumin excretion. The agreement between FFM estimated by DXA and the other methods, expressed as mean difference +/- 2 SD was; for DXA vs. TBK, 0.09 +/- 6.26 and 0.50 +/- 5.26 kg for controls and IDDM patients respectively; DXA vs. TBW, -2.07 +/- 2.56 and -1.07 +/- 4.58 kg; DXA vs. Ucrea, -2.62 +/- 8.02 and 2.00 +/- 10.0 kg; DXA vs. BIA, -7.90 +/- 8.92 and -7.85 +/- 2.32 kg. The results obtained with BIA were significantly different from the other methods for both control subjects and IDDM patients. In conclusion, DXA scanning is a precise and valid method for estimation of fat-free mass in IDDM patients.

Rosenfalck, A M; Almdal, Thomas Peter

1995-01-01

306

 

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil and Public Health | Language: Portuguese Abstract in portuguese Análises de impacto orçamentário (AIO) fornecem previsões financeiras operacionais para a implementação de uma nova tecnologia em um sistema de saúde. Até o momento, não havia recomendações específicas para o desenvolvimento de AIO no Brasil. O presente trabalho apresenta uma revisão dos métodos usa [...] dos nas AIO de tecnologias da saúde e propõe recomendações para seu uso nos âmbitos do SUS e do sistema de saúde suplementar. As recomendações principais são: analisar pela perspectiva do gestor; empregar horizonte temporal de um a cinco anos; comparar cenários de referência e alternativos; considerar taxa de incorporação da tecnologia; delimitar a população de interesse pela abordagem epidemiológica ou por demanda aferida; considerar restrições para acesso ou fatores indutores de demanda; considerar custos diretos incorridos e evitados; não ajustar para inflação ou descontos; integrar as informações em planilha eletrônica; calcular o impacto orçamentário diferencial entre cenários; sintetizar as informações em um relatório de impacto orçamentário. Abstract in english Budget impact analysis (BIA) provides operational financial forecasts to implement new technologies in healthcare systems. There were no previous specific recommendations to conduct such analyses in Brazil. This paper reviews BIA methods for health technologies and proposes BIA guidelines for the pu [...] blic and private Brazilian healthcare system. The following recommendations were made: adopt the budget administrator's perspective; use a timeframe of 1 to 5 years; compare reference and alternative scenarios; consider the technology's rate of incorporation; estimate the target population by either an epidemiological approach or measured demand; consider restrictions on technologies' indication or factors that increase the demand for them; consider direct and averted costs; do not adjust for inflation or discounts; preferably, integrate information on a spreadsheet; calculate the incremental budget impact between scenarios; and summarize information in a budget impact report.

Andre Luis, Ferreira-Da-Silva; Rodrigo Antonini, Ribeiro; Vânia Cristina Canuto, Santos; Flávia Tavares Silva, Elias; Alexandre Lemgruber Portugal, d' Oliveira; Carisi Anne, Polanczyk.

1223-12-01

307

New data on the prevalence of Trichodectes melis (Phthiraptera, Trichodectidae) on the European badger Meles meles (Carnivora, Mustelidae).  

Science.gov (United States)

Trichodectes melis is a specific ectoparasite of the European badger Meles meles. Distribution of this chewing louse is little known, although presumably it coincides with the range of its typical host. In Poland, it has been found in only a few stands in the western part of the country. It has recently been observed in the area of the Bia?owie?a Primeval Forest, where 81 specimens of T. melis (48 females, 7 males and 26 nymph forms) were collected from two female European badgers, mainly from the fur of the head area. No symptoms of infestation were observed. PMID:25706425

Kozina, Paulina; Gólcz, Aleksandra; Izdebska, Joanna N

2014-01-01

308

Ten years of regeneration dynamics in an unexploited lime-hornbeam forest in the Bialowieza National Park (Poland): an assessment of the variability of the forest mosaic  

OpenAIRE

Changes in tree species composition and the forest mosaic over the 1982û1992 period are described for a one-hectare plot in an unexploited lime-hornbeam forest in the Biaowie¿a National Park (Poland). For trees 10 m the total numbers declined slightly, basal and crown projection area remained stable, and crown volume increased, resulting in a denser canopy. Picea abies had the highest annual mortality rate (3%), Carpinus betulus the lowest (0.2%). For trees with height ú 10 m, Carpinus h...

Koop, H. G. J. M.; Bijlsma, R. J.

2007-01-01

309

Effective and timely evaluation of pulmonary congestion: qualitative comparison between lung ultrasound and thoracic bioelectrical impedance in maintenance hemodialysis patients.  

Science.gov (United States)

The assessment of pulmonary congestion in maintenance hemodialysis (MHD) patients is challenging. Bioelectrical impedance analysis (BIA) can estimate body water compartments. Natriuretic peptides are markers of hemodynamic stress, neurohormonal activation and extracellular volume overload. Lung ultrasound (LUS) has been proposed for the non-invasive estimation of extravascular lung water through B-lines assessment. Up to now, no study evaluated the correlation between B-lines, segmental thoracic BIA, and natriuretic peptides in MHD patients. The aims of this study were: (1) To validate LUS as a tool for an effective and timely evaluation of pulmonary congestion in MHD patients, in comparison with segmental thoracic BIA, and with natriuretic peptides; (2) To compare a comprehensive whole chest ultrasound scanning with a simplified and timely scanning scheme limited to the lateral chest regions.Thirty-one MHD adult patients were examined. LUS, total body and thoracic BIA, and natriuretic peptides were performed immediately before and after a mid-week dialysis session. The number of B-lines assessed by LUS was compared with total body and thoracic impedance data and with natriuretic peptides.Pre-HD B-lines ranged 0-147 (mean 31) and decreased significantly post-HD (mean 16, P?body impedance, and correlated with extra-cellular but not with intra-cellular water index. The correlation between B-lines and ECWI was similar when LUS was limited to the lateral chest regions or performed on the whole chest. Multivariate analysis showed that only segmental thoracic impedance was an independent predictor of residual pulmonary congestion.The dynamic changes in B-lines after hemodialysis are correlated to the changes in total body and extra-cellular water, and particularly to lung fluids removal. B-line assessment in MHD patients is highly feasible with a simplified and timely scanning scheme limited to the lateral chest regions. These premises make B-lines a promising biomarker for a bedside assessment of pulmonary congestion in MHD patients. PMID:25674735

Donadio, Carlo; Bozzoli, Laura; Colombini, Elisa; Pisanu, Giovanna; Ricchiuti, Guido; Picano, Eugenio; Gargani, Luna

2015-02-01

310

Probability of the most massive cluster under non-Gaussian initial conditions  

OpenAIRE

Very massive high redshift clusters can be used to constrain and test the Lambda CDM model. Taking into account the observational constraints of Jee et al. (2009) we have calculated the probability for the most massive cluster to be found in the range (5.2-7.6)e14 M_sun, between redshifts 1.4-2.2, with a sky area of 11 sqdeg and under non-Gaussian initial conditions. Clusters constrain the non-Gaussianity on smaller scales than current cosmic microwave background or halo bia...

Cayo?n, Laura; Gordon, Christopher; Silk, Joseph

2010-01-01

311

210Po bioaccumulation by mushrooms from Poland.  

Science.gov (United States)

The paper presents results on 210Po activity concentration measured in mushroom samples collected in northern Poland (Bia?ogard and Elblag areas). Among 20 species of wild mushrooms, King Bolete (Boletus edulis), accumulated 210Po in the highest degree. Therefore this species of higher mushrooms is an excellent bioindicator for 210Po radioactivity in the land environment. Finally, the effective dose of polonium emission was calculated for a consumer of King Bolete. Wild mushroom consumption contributed up to 37 microSv to the effective dose in an individual consuming about 5 kg (fresh weight) of heavily contaminated Boletus edulis species per year. PMID:14587851

Skwarzec, B; Jakusik, A

2003-10-01

312

Uk?adowa infekcja grzybicza u 17-letniego ch?opca z AML  

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Full Text Available Pacjent, lat 17, leczony z powodu ostrej bia?aczki mieloblastycznej. Po zako?czeniu konsolidacji fazy B u ch?opca wyst?pi?a g??boka pancytopenia. Wyniki bada? bakteriologicznych i mikologicznych by?y ujemne. Empirycznie zastosowano antybiotyki i leki przeciwgrzybicze {Orungal, amfoterycyn? B. Mimo leczenia stan ogólny ch?opca si? pogarsza?. W tomografii komputerowej p?uc stwierdzono obustronnie zmiany o charakterze najprawdopodobniej grzybiczym. Do leczenia w??czono liposomaln? posta? amfoterycyny B - AmBisome, uzyskuj?c popraw? stanu ogólnego dziecka oraz regresj? zmian w p?ucach.

Joanna Zawi?kowska-Klaczy?ska

2004-09-01

313

Charge and spin transport in spin valves with anisotropic spin relaxation  

CERN Document Server

We investigate effects of spin-orbit splitting on electronic transport in a spin valve consisting of a large quantum dot defined on a two-dimensional electron gas with two ferromagnetic contacts. In the presence of both structure inversion asymmetry (SIA) and bulk inversion asymmetry (BIA) a giant anisotropy in the spin-relaxation times has been predicted. We show how such an anisotropy affects the electronic transport properties such as the angular magnetoresistance and the spin-transfer torque. Counterintuitively, anisotropic spin-relaxation processes sometimes enhance the spin accumulation.

Saarikoski, H; Bauer, G E W

2006-01-01

314

Usnea florida – threatened species of rich biotopes in the Polish Eastern Carpathians  

OpenAIRE

The paper presents the results of the research on Usnea florida in the Polish Eastern Carpathians. Three new sites of this species have been found in the Bieszczady National Park at an altitude of 800-880 m. U. florida grows on the bark of Fagus sylvatica, Populus tremula and Betula sp. The historical sites of this species in the Western Bieszczady Mts. have not been confirmed. In Poland U. florida has also been recorded in the Bia?owie?a Forest and Gda?skie Pomerania.

Robert Ko?cielak

2007-01-01

315

What´s cheapest, intravenous iron sucrose- or intravenous iron carboxymaltose treatment in IBD patients? : It dependent on the economic evaluation perspective!  

DEFF Research Database (Denmark)

  What´s cheapest, intravenous iron sucrose- or intravenous iron carboxymaltose treatment in IBD patients? It dependent on the economic evaluation perspective!   Aim: To evaluate the health care cost for intravenous iron sucrose (Venofer®, Vifor) and intravenous iron carboxymaltose (Ferinject®, Vifor) treatment to IBD patients in an outpatient setting.   Background: Intravenous iron sucrose can be given as a maximum of 200 mg Fe++ per infusion vs. intravenous iron carboxymaltose that can be given as a maximum of 1000 mg Fe++ in a single infusion leading to fewer infusions and visits. The drug-cost per mg iron is for iron carboxymaltose approximately double the cost of iron sucrose.   Patients and Methods: Data related to 111 IBD-patients treated with intravenous iron at Aarhus University Hospital from August 2005 until October 2009 was used for the economic evaluation. Analysis included a Budget Impact Analysis (BIA) from a hospital perspective, a Cost Effective Analysis (CEA) from a patient perspective and a Cost Benefit Analysis (CBA) consecutively including 20 IBD patients' willingness-to-pay' (WTP) assessment. BIA and CEA analysis were based on total infusion-doses from 500 mg Fe++ till 1600 mg Fe++. The WTP analysis was based on a total infusion-dose at 1400 mg Fe++. The evaluations are analysed assuming that the effect parameter (quantity of iron delivered) is comparable regardless of the iron formulation given intravenously.   Results: The BIA including price for drug, utensils and ½ hour spend by a nurse per visit; showed approximately 150€ extra cost per 1000 mg Fe++ administrated, if iron carboxymaltose was chosen. In contrast the CEA including both BIA-values and patient-related costs (transportation and lost income) showed iron carboxymaltose to be more cost-effective than iron sucrose, due to fewer outpatient setting visits. As IBD-patients could have less income as the average of the background population due to disease activity, sensitivity analysis using a 50% income level weredone, showing the same tendency but less significant. The average patients WTP for a total of iron-dose was to 233€ to reduce the numbers of infusion from 7 till 2.    Conclusion: The cost of choosing iron carboxymaltose rather than iron sucrose in treatment of iron deficiency in IBD differs depending of the economic perspective chosen. Only the Budget Impact Analysis showed iron sucrose to be the cheapest. If the patients' perspective is included in the economic evaluation iron carboxymaltose is the most cost-effective.

Bager, Palle; Dahlerup, Jens Frederik

316

Comparison of bioelectrical impedance with skinfold thickness and X-ray absorptiometry to measure body composition in HIV-infected with lipodistrophy / Comparación de impendancia bioeléctrica con grosor de pliegues cutáneos y absorciometría de rayos X para mensurar la composición corporal de personas con VIH con lipodistrofia  

Scientific Electronic Library Online (English)

Full Text Available SciELO Spain | Language: English Abstract in spanish Introducción: El síndrome de lipodistrofia (SL) asociado al virus de inmunodeficiencia humana (HIV) incluye alteraciones en la composición corporal y metabólica. La falta de herramientas adecuadas y criterios válidos dificultan la evaluación de la composición corporal en este grupo. Objetivo: El obj [...] etivo del estudio fue comparar distintos métodos para evaluar la composición corporal entre individuos brasileños con HIV que teniam (HIV+LIPO+) o no LS (HIV+LIPO-) e individuos sanos (control). Métodos: Estudio transversal en el que fue evaluada la composición corporal por análisis de impedancia bioeléctrica (BIA), pliegues cutáneos (SF) y absorciometría de rayos X de doble energía (DXA) en un grupo de 10 individuos con HIV+LIPO+, 22 individuos del grupo HIV+ LIPO- y 12 individuos del grupo control. Resultados: No hubo diferencias en la edad e índice de masa corporal (IMC) entre grupos. La masa grasa (MG) (%) estimada por SF no se correlacionó con DXA en pacientes del grupo HIV+LIPO+ (r = 0,46 / p> 0,05) y había leve concordancia en ambos grupos con HIV (HIV+LIPO+ = 0,35/ HIV+LIPO- = 0,40). BIA tuvo una correlación significativa en todos los grupos (p Abstract in english Introduction: Human immunodeficiency vírus (HIV)-associated lipodystrophy syndrome (LS) includes body composition and metabolic alterations. Lack of validated criteria and tools make difficult to evaluate body composition in this group. Objective: The aim of the study was to compare different method [...] s to evaluate body composition between Brazilians HIV subjects with (HIV+LIPO+) or without LS (HIV+LIPO-) and healthy subjects (Control). Methods: in a cross-sectional analyses, body composition was measured by bioelectrical impedance analysis (BIA), skinfold thickness (SF) and dual-energy x-ray absorptiometry (DXA) in 10 subjects from HIV+LIPO+ group; 22 subjects from HIV+LIPO- group and 12 from Control group. Results: There were no differences in age and body mass index (BMI) between groups. The fat mass (FM) (%) estimated by SF did not correlate with DXA in HIV+LIPO+ group (r = 0,46/ p > 0,05) and had fair agreement in both HIV groups (HIV+LIPO+ =0,35/ HIV+ LIPO- = 0,40). BIA had significant correlation in all groups (p

H., Siqueira Vassimon; A. A., Jordao; F. J., Albuquerque de Paula; A., Artioli Machado; J., Pontes Monteiro.

2011-06-01

317

In?ynierowany jedwab paj?czy: inteligentny biomateria? przysz?o?ci. Cz??? II  

Directory of Open Access Journals (Sweden)

Full Text Available Opracowanie i rozwój technologii produkcji in?ynierowanego jedwabiu stworzy?y realne mo?liwo?ci jego praktycznych zastosowa?. Rekombinowany in?ynierowany paj?czy jedwab (IPJ stanowi substrat do produkcji ró?nych biomateria?ów, takich jak: filmy, hydro?ele, w?ókna, rusztowania, mikrokapsu?ki, mikro- i nanosfery. Wytwarzanie in vitro w?ókien odbywa si? w sposób na?laduj?cy warunki naturalnie panuj?ce w gruczole prz?dnym paj?ka: w obecno?ci jonów fosforanowych oraz si? ci?gn?cych. Filmy otrzymywane s? przez odparowanie rozpuszczalnika z roztworu jedwabiu, natomiast rezultatem odparowywania rozpuszczalnika w obecno?ci porogenu s? jedwabne rusztowania. Hydro?ele powstaj? w wyniku polimeryzacji cz?stek jedwabiu w roztworach o niskim pH. Polimer jedwabiu powstaj?cy na granicy niemieszaj?cych si? faz wykorzystywany jest do otrzymywania mikrokapsu?ek. Najmniejsze z opisywanych form – jedwabne sfery powstaj? przez wysolenie bia?ek jedwabiu jonami fosforanowymi. Cechami wspólnymi jedwabnych biomateria?ów s? biokompatybilno?? oraz biodegradowalno?? pozwalaj?ce na wykorzystanie ich w medycynie i farmacji, a strategia konstrukcji bia?ek hybrydowych polegaj?ca na nadaniu metodami in?ynierii genetycznej po??danej funkcji dalej rozszerza mo?liwo?ci ich wykorzystania.

Katarzyna Ka?mierska

2011-06-01

318

Geometric Methods in Physics : XXXII Workshop  

CERN Document Server

The Bia?owie?a Workshops on Geometric Methods in Physics, which are hosted in the unique setting of the Bia?owie?a natural forest in Poland, are among the most important meetings in the field. Every year some 80 to 100 participants from both the mathematics and physics world join to discuss new developments and to exchange ideas. The current volume was produced on the occasion of the 32nd meeting in 2013. It is now becoming a tradition that the Workshop is followed by a School on Geometry and Physics, which consists of advanced lectures for graduate students and young researchers. Selected speakers at the 2013 Workshop were asked to contribute to this book, and their work was supplemented by additional review articles. The selection shows that, despite its now long tradition, the workshop remains at the cutting edge of research. The 2013 Workshop also celebrated the 75th birthday of Daniel Sternheimer, and on this occasion the discussion mainly focused on his contributions to mathematical physics such as ...

Bieliavsky, Pierre; Odesskii, Alexander; Odzijewicz, Anatol; Schlichenmaier, Martin; Voronov, Theodore; Geometric Methods in Physics

2014-01-01

319

Imide modified epoxy matrix resins  

Science.gov (United States)

The results of a program designed to develop tough imide modified epoxy resins cured by bisimide amine (BIA) hardeners are described. State-of-the-art epoxides MY720 and DER383 were used, and four bismide amines were evaluated. These were the BIA's derived from the 6F anhydride (4,4'-(hexafluoroisopropylidene) bis(phthalic anhydride) and the diamines 3,3'-diaminodiphynyl sulfone, 4,4'-oxygianiline, 4,4'-methylene dianiline, and 1,12-dodecane diamine. A key intermediate, designated 6F anhydride, is required for the synthesis of the bisimide amines. Reaction parameters to synthesize a precursor to the 6F anhydride (6FHC) in high yields were investigated. The catalyst trifluoromethane sulfonic acid was studied. Although small scale runs yielded the 6FHC in 50 percent yield, efforts to ranslate these results to a larger scale synthesis gave the 6FHC in only 9 percent yield. Results show that the concept of using bisimide amine as curing agents to improve the toughness properties of epoxies is valid.

Scola, D. A.

1984-01-01

320

Relationship between history of smoking, metabolic and inflammatory markers, parameters of body composition and muscle strength.  

Science.gov (United States)

The objective of this study was to investigate the relationship between smoking history expressed by pack-years, metabolic and inflammatory markers, parameters of body composition (BC) and muscle strength among heavy smokers. A detailed smoking history was obtained from 49 heavy smokers (age?=?44?±?12, pack-years?=?31?±?23). Blood samples were analyzed for levels of glucose, lipids, liver enzymes and C-reactive protein (CRP). Anthropometric measurements included waist circumference and assessment of BC by dual energy X-ray absorptiometry (DEXA) and bioelectrical impedance analysis (BIA). Muscle strength was assessed by handgrip dynamometry and predicted one-repetition maximum (p1RM) tests. Positive correlations were found between pack-years of smoking, fasting glucose, alkaline phosphatase and CRP levels. Pack-years were also positively correlated with waist circumference, body mass index (BMI), whole-body and trunk fat mass measured by both DEXA and BIA. A negative correlation was found between pack-years of smoking and muscle strength measured by p1RM for the leg press exercise. After adjustment for age, sex and BMI, a positive correlation remained between pack-years of smoking and CRP levels. In conclusion, after controlling for possible confounders, smoking history was found to be positively associated with CRP levels among heavy smokers. PMID:25468009

Rom, O; Karkabi, K; Reznick, A Z; Keidar, Z; Aizenbud, D

2015-01-01

321

Neutral sphingomyelinase 2 is a key factor for PorB-dependent invasion of Neisseria gonorrhoeae.  

Science.gov (United States)

Disseminated gonococcal infection (DGI) is a rare but serious complication caused by the spread of Neisseria gonorrhoeae in the human host. Gonococci associated with DGI mainly express the outer membrane protein PorBIA that binds to the scavenger receptor expressed on endothelial cells (SREC-I) and mediates bacterial uptake. We recently demonstrated that this interaction relies on intact membrane rafts that acquire SREC-I upon attachment of gonococci and initiates the signalling cascade that finally leads to the uptake of gonococci in epithelial cells. In this study, we analysed the role of sphingomyelinases and their breakdown product ceramide. Gonococcal infection induced increased levels of ceramide that was enriched at bacterial attachment sites. Interestingly, neutral but not acid sphingomyelinase was mandatory for PorBIA -mediated invasion into host cells. Neutral sphingomyelinase was required to recruit the PI3 kinase to caveolin and thereby activates the PI3 kinase-dependent downstream signalling leading to bacterial uptake. Thus, this study elucidates the initial signalling processes of bacterial invasion during DGI and demonstrates a novel role for neutral sphingomyelinase in the course of bacterial infections. PMID:25224994

Faulstich, Michaela; Hagen, Franziska; Avota, Elita; Kozjak-Pavlovic, Vera; Winkler, Ann-Cathrin; Xian, Yibo; Schneider-Schaulies, Sibylle; Rudel, Thomas

2015-02-01

322

Biodiversity Impact Assessment of roads: an approach based on ecosystem rarity  

International Nuclear Information System (INIS)

Biodiversity has become one of the central environmental issues in the framework of recent policies and international conventions for the promotion of sustainable development. The reduction of habitat worldwide is currently considered as the main threat to biodiversity conservation. Transportation infrastructures, and above all road networks, are blamed for highly contributing to the decrease in both the quantity and the quality of natural habitat. Therefore, a sound Biodiversity Impact Assessment (BIA) in road planning and development needs to be coupled to other commonly considered aspects. This paper presents an approach to contribute to BIA of road projects that focuses on one type of impact: the direct loss of ecosystems. The first step consists in mapping the different ecosystem types, and in evaluating their relevance for biodiversity conservation. This is based on the assessment of ecosystem's rarity. Rarity is a measure of how frequently an ecosystem type is found within a given area. Its relevance is confirmed by the fact that the protection of rare ecosystems is often considered as the single most important function of biodiversity conservation. Subsequently, the impact of a road project can be quantified by spatially computing the expected losses of each ecosystem type. To illustrate the applicability of the methodology, a case study is presented dealing with the assessment of alternative routes for a highway development in northern Italyopment in northern Italy

323

Patogeneza reumatoidalnego zapalenia stawów. Cz??? I – odpowied? nabyta, uwarunkowania genetyczne i ?rodowiskowe  

Directory of Open Access Journals (Sweden)

Full Text Available Kliniczny pocz?tek reumatoidalnego zapalenia stawów (RZSpoprzedza faza bezobjawowa, podczas której inicjowana jestodpowied? autoimmunizacyjna o ró?nej swoisto?ci, a najbardziejcharakterystycznym komponentem jest reaktywno?? limfocytówT i B na bia?ka cytrulinowane. Rozwój nabytej odpowiedzi jestdeterminowany przez czynniki genetyczne i ?rodowiskowe. Genetycznepod?o?e RZS tworzy polimorficzny gen HLA-DRB1, koduj?cycz?steczki DR zawieraj?ce „wspólny epitop” i prezentuj?ce autoantygeny,oraz liczne geny zwi?zane z odpowiedzi? nabyt?. Spo?ródczynników ?rodowiskowych g?ówn? rol? przypisuje si? tym,które zwi?kszaj? cytrulinacj? bia?ek, tj. paleniu tytoniu i zaka?eniomwywo?anym przez Porphyromonas gingivalis. Odpowied?autoimmunizacyjna per se jest niewystarczaj?ca do rozwoju RZS,ale stanowi istotn? sk?adow? procesów patogennych, poniewa?autoprzeciwcia?a i aktywowane limfocyty bior? udzia? w inicjacjii podtrzymywaniu odpowiedzi zapalnej i procesach destrukcyjnych.W artykule omówiono te zagadnienia, opieraj?c si? na najnowszychosi?gni?ciach badawczych i w sposób zbiorczyprzedstawiono graficznie (ryc. 1. Znaczenie uk?adu odporno?ciwrodzonej, cytokin i procesów destrukcyjnych w patogenezie RZSb?dzie przedmiotem nast?pnych opracowa?.

Ewa Kontny

2011-02-01

324

Rhesus monkey is a new model of secondary lymphedema in the upper limb  

Science.gov (United States)

Objective: This study is to establish the rhesus monkey model of lymphedema in the upper limbs, and assess the suitability of this model. Methods: An animal model of lymphedema was established by the combined irradiation and surgical techniques in the upper limbs of these rhesus monkeys. Physical examination, high-resolution MR lymphangiography, bioelectrical impedance analysis (BIA), and immunohistochemical staining were performed to determine the severity of the edema in the upper limbs of the animal model. Results: Our results from physical examination indicated that the rhesus monkey model present with typical appearance and features of lymphedema. MR lymphangiography further demonstrated pathologically modified lymphatic vessels in our rhesus monkey model. BIA revealed increased water content in the upper limb in these rhesus monkeys, which was in line with the pathology of lymphedema. Immunohistochemical staining showed the curvature of the lymphatic vessels in the rhesus monkey model, typical pathological changes in lymphedema. Conclusion: Rhesus monkey lymphedema model provides a more consistent background to elucidate the pathophysiology of the disease. This new model would help to increase our understanding of acquired upper limb lymphedema, and promote the development of new treatments for this intractable disorder. PMID:25337207

Wu, Guojun; Xu, Hao; Zhou, Wenhong; Yuan, Xianshun; Yang, Zhe; Yang, Qing; Ding, Feng; Meng, Zhigang; Liang, Weili; Geng, Chong; Gao, Ling; Tian, Xingsong

2014-01-01

325

Prediction of fat-free body mass from bioelectrical impedance and anthropometry among 3-year-old children using DXA  

DEFF Research Database (Denmark)

For 3-year-old children suitable methods to estimate body composition are sparse. We aimed to develop predictive equations for estimating fat-free mass (FFM) from bioelectrical impedance (BIA) and anthropometry using dual-energy X-ray absorptiometry (DXA) as reference method using data from 99 healthy 3-year-old Danish children. Predictive equations were derived from two multiple linear regression models, a comprehensive model (height(2)/resistance (RI), six anthropometric measurements) and a simple model (RI, height, weight). Their uncertainty was quantified by means of 10-fold cross-validation approach. Prediction error of FFM was 3.0% for both equations (root mean square error: 360 and 356 g, respectively). The derived equations produced BIA-based prediction of FFM and FM near DXA scan results. We suggest that the predictive equations can be applied in similar population samples aged 2-4 years. The derived equations may prove useful for studies linking body composition to early risk factors and early onsetof obesity.

Ejlerskov, Katrine Tschentscher; Jensen, Signe Marie

2014-01-01

326

Leki przeciwp?ytkowe - blokery p?ytkowego receptora fibrynogenu  

Directory of Open Access Journals (Sweden)

Full Text Available Glikoproteina IIb/IIIa (aIIbb3, nale??ca do rodziny adhezyjnych receptorów integrynowych jest bia?kiem, które wyst?puje wy??cznie w p?ytkach krwi. Receptor ten jest nieaktywny w p?ytkach b?d?cych w stanie spoczynku. Pod wp?ywem odpowiednich aktywatorów podlega zmianom konformacyjnym, przechodz?c w stan aktywny, w którym wi??e wysokocz?steczkowe bia?ka, w tym fibrynogen i czynnik von Willebranda. Dzi?ki tej reakcji zachodzi agregacja p?ytek, prowadz?ca do wytworzenia skrzepu hemostatycznego. Reakcje te odgrywaj? zasadnicz? rol? podczas homeostazy naczyniowej i zapobiegaj? nadmiernym krwawieniom po uszkodzeniu ?ciany naczy?. Narastanie skrzepliny mo?e prowadzi? jednak do zakrzepicy i jest – w skali ?wiatowej – jedn? z najcz?stszych przyczyn zgonów. Receptor dla fibrynogenu jest zatem doskona?? tarcz? dla farmakologicznej interwencji ukierunkowanej na przeciwdzia?anie agregacji p?ytek. Opracowano wiele ró?norodnych inhibitorów receptora fibrynogenu, z których trzy, tj. abciximab, eptifibatid i tirofiban, znalaz?y ju? zastosowanie jako skuteczne leki przeciwp?ytkowe.

Czes?aw S. Cierniewski

2000-06-01

327

Inibição do crescimento de Escherichia coli isolada de Queijo "Minas Frescal" por Lactobacillus acidophilus / Inhibition of the growth of Escherichia coli isolated from 'Minas Frescal' cheese by Lactobacillus acidophilus  

Scientific Electronic Library Online (English)

Full Text Available Escherichia coli faz parte da microbiota anaeróbica facultativa normal, sendo também considerada um dos maiores patógenos entéricos predominantes no cólon dos animais e homem. Neste trabalho, realizaram-se ensaios "in vitro" para avaliar o grau de atividade antagonista de cinco cepas de Lactobacillu [...] s acidophilus, com capacidade probiótica sobre Escherichia coli BIA 26 (STEC) isolada de queijo "Minas Frescal". Para tanto, foi utilizado o teste de inibição através do método de dupla camada em triplicata para avaliar zonas de inibição de crescimento. Todas as cepas de Lactobacillus mostraram-se capazes de inibir a E. coli, com zonas de inibição variando de 12 a 15mm de diâmetro, sendo que a maioria apresentou 14mm de diâmetro, consideradas como fortes halos de inibição. Abstract in english Escherichia coli is part of the normal facultative anaerobic microflora and one of the major enteric pathogens in the colon of animals and humans. In vitro trials were conducted to evaluate the level of antagonistic activity of five strains of Lactobacillus acidophilus with probiotic effect on Esche [...] richia coli BIA 26 (STEC), which was isolated from 'Minas frescal' cheese. Inhibition assays were carried out using the double layer method in triplicates to evaluate growth inhibition zones. All L. acidophilus strains were capable to inhibit E. coli, with inhibition zones ranging from 12 to 15mm, but mostly around 14mm in diameter, and considered strong inhibition halos.

Tammy Priscilla, Chioda; Rubén Pablo, Schocken-Iturrino; Gisela Rojas, Garcia; Caroline Peters, Pigatto; César Augusto Martins, Ribeiro; Adriana Valim Ferreira, Ragazzani.

2007-04-01

328

Dro?d?e jako model w badaniach chorób neurodegeneracyjnych  

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Full Text Available Dro?d?e piekarnicze Saccharomyces cerevisiae s? najlepiej poznanymi na poziomie genetyki i fizjologii komórki organizmami eukariotycznymi. Konserwatyzm molekularnych mechanizmów komórkowych mi?dzy dro?d?ami a cz?owiekiem pozwala na u?ycie komórek S. cerevisiae jako modelu do bada? mechanizmów doprowadzaj?cych do ró?nych chorób cz?owieka. Obecnie dro?d?e, cho? pozbawione uk?adu nerwowego, z powodzeniem u?ywane s? do bada? schorze? neurodegeneracyjnych, takich jak choroba Alzheimera, choroba Parkinsona czy choroba Huntingtona. Szeroki warsztat metod biologii molekularnej umo?liwia zarówno badanie homologów ludzkich genów w komórkach dro?d?y, jak i heterologiczn? ekspresj? ludzkich bia?ek. Przyczyny patologicznych zmian w ukszta?towaniu bia?ka, mutacje powoduj?ce zmian? funkcji lub tworzenie toksycznych agregatów – wszystkie te aspekty mog? i z powodzeniem s? badane z u?yciem modelu dro?d?owego. W pracy przedstawiono obecny stan wykorzystania modelu dro?d?owego w badaniach nad wyja?nieniem mechanizmów doprowadzaj?cych do schorze? neurodegeneracyjnych.

Donata Wawrzycka

2011-06-01

329

Screening for sarcopenia in obesity  

Science.gov (United States)

Sarcopenia is a progressive and generalized loss of skeletal muscle mass (SM) and function which can also be found in obese adults. The aim of the study was to evaluate the prevalence of sarcopenia in 1 245 obese women (18 - 67 years, weight 114.7±24.5 kg; BMI 44.1±9.2 fat mass 49.0±6.2%) from Southern Italy. Body composition was evaluated by bioimpedance analysis (BIA) and SM calculated by using Janssen's equation; therefore the sex-specific cut-off points of percentage skeletal muscle index were used. The whole population was divided in two age groups: A (18-40 years; n. 808; weight 115.4±23.5 kg; BMI 43.8±8.8 kg/m2) and B (41-67 years; n. 438; weight 113.4±26.3 kg; BMI 44.8±9.9 kg/m2). In all the sample there was 2.7% moderate and 0.6% severe sarcopenia; in group A, 1.9% moderate and 0.6% severe sarcopenia whilst in group B 4.3% moderate and 0.7% severe sarcopenia. The results of our study suggest that, based on a screening examination by BIA, moderate/severe sarcopenia can be detected in an unselected middle-aged obese population. Further studies are required to clarify the diagnosis with functional tests.

Sammarco, R.; Marra, M.; Montagnese, C.; De Rosa, E.; Onufrio, M.; Amato, V.; Santarpia, L.; De Caprio, C.; Contaldo, F.; Pasanisi, F.

2013-04-01

330

Prediction of fat-free body mass from bioelectrical impedance and anthropometry among 3-year-old children using DXA.  

Science.gov (United States)

For 3-year-old children suitable methods to estimate body composition are sparse. We aimed to develop predictive equations for estimating fat-free mass (FFM) from bioelectrical impedance (BIA) and anthropometry using dual-energy X-ray absorptiometry (DXA) as reference method using data from 99 healthy 3-year-old Danish children. Predictive equations were derived from two multiple linear regression models, a comprehensive model (height(2)/resistance (RI), six anthropometric measurements) and a simple model (RI, height, weight). Their uncertainty was quantified by means of 10-fold cross-validation approach. Prediction error of FFM was 3.0% for both equations (root mean square error: 360 and 356 g, respectively). The derived equations produced BIA-based prediction of FFM and FM near DXA scan results. We suggest that the predictive equations can be applied in similar population samples aged 2-4 years. The derived equations may prove useful for studies linking body composition to early risk factors and early onset of obesity. PMID:24463487

Ejlerskov, Katrine T; Jensen, Signe M; Christensen, Line B; Ritz, Christian; Michaelsen, Kim F; Mølgaard, Christian

2014-01-01

331

Total mercury of selected fish species from Laguna de Bay  

International Nuclear Information System (INIS)

Dalag Ophicephalus striatus Block, kanduli Arius thalassinus Ruppell, bia Amblygobius phalaena Cuvier et Valenciennes and tilapia Tilapia nilotica Linnnaeus collected from Laguna de Bay between Taguig and Binangonan area in August 1989 to July 1990 were analyzed for total mercury by atomic absorption spectrometry. The highest metal concentration in soft muscle tissue was observed in Dalag followed by kanduli, less in bia and least in tilapia with mean values of 0.021, 0.020, 0.013, and 0.008 ug/g, respectively. Analysis using two-way ANOVA showed a significant difference in the mean total mercury in ug/g in the difference fish samples, among the different months and the interaction between these two variables. Mean total mercury of the four fish samples were significantly higher in April than in October. The results show that the levels of total mercury in the fish samples are below the World Health Organization maximum tolerable consumption of mercury in food of 300 ug or 0.03 mg of total mercury per week. (author)

332

Valoración de la grasa corporal en jóvenes físicamente activos: antropometría vs bioimpedancia / Assessment of body fat in physically active young people: anthropometry vs bioimpedance  

Scientific Electronic Library Online (English)

Full Text Available SciELO Spain | Language: Spanish Abstract in spanish Objetivo: Analizar el nivel de concordancia entre el método antropométrico y diferentes aparatos de bioimpedancia (BIA) para la estimación de la masa grasa en un grupo de personas jóvenes y físicamente activas. Sujetos: Participaron 55 sujetos estudiantes de Ciencias de la Actividad Física y el Depo [...] rte del INEFC de Barcelona; 29 hombres (edad: 24,7 ± 4,7 años; IMC: 23,4 ± 1,8) y 26 mujeres (edad: 22,9 ± 3,5; IMC: 21,5 ± 1,9). Todos ellos otorgaron voluntariamente su consentimiento informado Material y métodos: La valoración antropométrica se realizó de acuerdo con el protocolo de la International Society for the Advancement Kinanthropometry (ISAK), el % graso fue calculado mediante la ecuación de Siri y se comparó con el obtenido por 4 aparatos BIA diferentes: Biospace Inbody 720, Tanita BC400, Tanita TBF-521 y Omron BF-300. Para valorar la concordancia de los resultados se utilizó el coeficiente de correlación intraclase y el método de Bland Aldman. Resultados: La masa grasa estimada, en hombres, mediante el método antropométrico fue de 7 ± 2,2 kg. Los resultados de los sistemas BIA fueron 7,4 ± 3 kg; 5,6 ± 2,2 kg; 5,7 ± 2,5 kg y 7,4 ± 3 kg para los aparatos Biospace Inbody 720, Tanita BC400, Tanita TBF521 y Omron BF300 respectivamente. En las mujeres los resultados fueron 10,4 ± 2,7 kg de masa grasa mediante el método antropométrico y 10,3 ± 2,9 kg; 11 ± 3,3 kg; 11,5 ± 3,0 kg; 10 ± 2,9 kg para los aparatos Biospace Inbody 720, Tanita BC400, Tanita TBF521 y Omron BF300 respectivamente. Conclusiones: En el grupo masculino la concordancia entre la antropometría y los aparatos BIA fue moderadabaja, en cambio en las mujeres se halló una buena concordancia entre las dos técnicas para la estimación de la grasa corporal cuando fueron utilizados los aparatos Biospace Inbody 720 y Tanita BC400. Abstract in english Objective: To assess the level of agreement between the anthropometrical method and several bioimpedance (BIA) devices to estimate the fat mass in a group of physically active young people. Subjects: 55 students of Physical Activity Sciences and Sports of the INEFC of Barcelona; 29 men (age: 24.7 ± [...] 4.7 years; BMI: 23.4 ± 1.8) and 26 women (age: 22.9 ± 3.5; BMI: 21.5 ± 1.9). All of them voluntarily gave their informed consent. Materials and method: Anthropometrical assessment was done according to the International Society for the Advancement Kinanthropometry (ISAK) protocol, the fat % was calculated by the Siri's equation and was compared with that obtained by 4 different BIA devices: Biospace Inbody 720, Tanita BC400, Tanita TBF-521, and Omron BF-300. To assess the level of agreement of the results, the interclass correlation coefficient and the Bland Aldman method were used. Results: The estimated fat mass, in men, by the anthropometrical method was 7 ± 2.2 kg. The results by the BIA systems were: 7.4 ± 3 kg; 5.6 ± 2.2 kg; 5.7 ± 2.5 kg, and 7.4 ± 3 kg for Biospace Inbody 720, Tanita BC400, Tanita TBF521, and Omron BF300, respectively. In women, the results were 10.4 ± 2.7 kg of fat mass by means of the anthropometrical method and 10.3 ± 2.9 kg, 11 ± 3.3 kg, 11.5 ± 3.0 kg, and 10 ± 2.9 kg for Biospace Inbody 720, Tanita BC400, Tanita TBF521, and Omron BF300, respectively. Conclusions: In the male group, the level of agreement between anthropometrics and BIA devices was moderate-poor, whereas in women there was a good correlation between both techniques for estimating the body fat when the Biospace Inbody 720 and Tanita BC400 devices were used.

J., Portao; R., Bescós; A., Irurtia; E., Cacciatori; L., Vallejo.

2009-10-01

333

Screening for sarcopenia in obesity  

International Nuclear Information System (INIS)

Sarcopenia is a progressive and generalized loss of skeletal muscle mass (SM) and function which can also be found in obese adults. The aim of the study was to evaluate the prevalence of sarcopenia in 1 245 obese women (18 – 67 years, weight 114.7±24.5 kg; BMI 44.1±9.2; fat mass 49.0±6.2%) from Southern Italy. Body composition was evaluated by bioimpedance analysis (BIA) and SM calculated by using Janssen's equation; therefore the sex-specific cut-off points of percentage skeletal muscle index were used. The whole population was divided in two age groups: A (18-40 years; n. 808; weight 115.4±23.5 kg; BMI 43.8±8.8 kg/m2) and B (41-67 years; n. 438; weight 113.4±26.3 kg; BMI 44.8±9.9 kg/m2). In all the sample there was 2.7% moderate and 0.6% severe sarcopenia; in group A, 1.9% moderate and 0.6% severe sarcopenia whilst in group B 4.3% moderate and 0.7% severe sarcopenia. The results of our study suggest that, based on a screening examination by BIA, moderate/severe sarcopenia can be detected in an unselected middle-aged obese population. Further studies are required to clarify the diagnosis with functional tests.

334

A study of percentage body fat in children via dual energy X-ray absorptiometry (DEXA)  

International Nuclear Information System (INIS)

Percentage body fat was measured using dual energy X-ray absorptiometry (DEXA), bioelectrical impedance analysis (BIA) and skin fold calipers on 26 children (nine in obesity group, 12 in healthy group and 5 in steroid treated group). Mean percent body fat did not differ significantly between methods in the whole subjects as well as the healthy group and the steroid treated group. However, the mean percent body fat using skin fold caliper was higher for the obesity group than the other two. The measurements of all cases in the obesity group by DEXA were higher than those of BIA. There were high correlations among the percent body fat obtained by each technique. According to the analysis of mean regional percent fat, the percent fat of legs was the highest in the healthy and steroid treated group, while there was no regional difference in the obesity group. It should be possible to classify each case in the obesity group into upper segment and lower segment obesity by DEXA. (author)

335

Effects of Intense Physical Activity with Free Water Replacement on Bioimpedance Parameters and Body Fluid Estimates  

International Nuclear Information System (INIS)

Authors have emphasized the need for previous care in order to perform reliable bioimpedance acquisition. Despite of this need some authors have reported that intense physical training has little effect on Bioimpedance Analysis (BIA), while other ones have observed significant effects on bioimpedance parameters in the same condition, leading to body composition estimates considered incompatible with human physiology. The aim of this work was to quantify the changes in bioimpedance parameters, as well as in body fluids estimates by BIA, after four hours of intense physical activity with free water replacement in young males. Xitron Hydra 4200 equipment was used to acquire bioimpedance data before and immediately after the physical training. After data acquisition body fluids were estimates from bioimpedance parameters. Height and weight of all subjects were also acquired to the nearest 0.1 cm and 0.1 kg, respectively. Results point that among the bioimpedance parameter, extracellular resistance presented the most coherent behavior, leading to reliable estimates of the extracellular fluid and part of the total body water. Results also show decreases in height and weight of the participants, which were associated to the decrease in body hydration and in intervertebral discs.

336

Estimation of total body water by bioelectrical impedance analysis  

International Nuclear Information System (INIS)

Total body water (TBW) measured by bioelectrical impedance analysis (BIA) was directly compared with deuterium-isotope dilution in a total of 58 subjects. First, sex-specific and group equations were developed by multiple regression analysis in (10 each) obese and nonobese men and women. Height/resistive impedance was the most significant variable used to predict deuterium-dilution space (D2O-TBW) and, combined with weight, yielded R = 0.99 and SE of estimate = 1.75 L. Equations predicted D2O-TBW equally well for obese and nonobese subjects. Second, the equations were prospectively tested in a heterogeneous group of 6 males and 12 females. Sex-specific equations predicted D2O-TBW with good correlation coefficients (0.96 and 0.93), total error (2.34 and 2.89 L), and a small difference between mean predicted and measured D2O-TBW (-1.4 +/- 2.05 and -0.48 +/- 2.83 L). BIA predicts D2O-TBW more accurately than weight, height, and/or age. A larger population is required to validate the applicability of our equations

337

Coeliac disease: a potentially treatable health problem of Saharawi refugee children  

Directory of Open Access Journals (Sweden)

Full Text Available OBJECTIVE: To characterize the clinical and nutritional impact of coeliac disease (gluten-sensitive enteropathy among Saharawi children living as refugees in Algeria. METHODS: A total of 65 Saharawi children with coeliac disease were compared with 71 age-matched non-coeliac controls. For each participant, the clinical history was taken and a clinical examination, non-quantitative 24-hour dietary recall, anthropometric and skinfold measurements, bioelectric impedance analysis (BIA of body composition, and venous blood sampling for haemoglobin determination were performed. RESULTS: Gluten-containing food, especially bread, was the staple diet of Saharawi children. Abdominal pain and distension were significantly commoner among children with coeliac disease than in controls ( P < 0.05. The mean height-for-age was significantly lower in such children than in controls (-2.5 + 1.4 units vs -1.8 + 1.3 units, respectively, P < 0.01. No significant differences were found for either skinfold or BIA measurements. Haemoglobin values tended to be lower in children with coeliac disease than in controls. CONCLUSIONS: Coeliac disease has a negative effect on the health status of Saharawi refugee children. Because of the high prevalence of the condition in the Saharawi, a specific programme for treating all affected individuals should be established. Further studies are required to quantify the impact of coeliac disease in other areas of the developing world.

Rätsch Ilse-Maria

2001-01-01

338

Erotylidae (Insecta, Coleoptera) of Poland - problematic taxa, updated keys and new records.  

Science.gov (United States)

New data concerning the occurrence of pleasing fungus beetles (Coleoptera: Erotylidae) in Poland are given, with a focus on rare and difficult to identify Central European taxa. Cryptophilus cf. integer (Heer) (Cryptophilinae) is reported from the Polish territory for the first time based on adult and larval specimens collected in the Wielkopolska-Kujawy Lowland. Identification problems concerning species of Cryptophilus introduced to Europe are discussed. Triplax carpathica Reitter (Erotylinae) is recorded from the Bia?owie?a Primeval Forest, which is the first known non-Carpathian finding of this species, located in the close proximity of the Polish-Belarussian UNESCO World Heritage Site "Bia?owie?a Forest". Discussion of Triplax carpathica being conspecific with Siberian Triplax rufiventris Gebler is provided. New Polish localities of several other Erotylidae are reported, and an updated key to Central European species of Triplax is given. The Triplax key is supplemented with dorsal and ventral habitus images of all treated Triplax species. One of the rarest Central European erotyline species Combocerus glaber (Schaller) is recorded from xerothermic grasslands in North-West Poland. PMID:22140339

Ruta, Rafa?; Ja?oszy?ski, Pawe?; Sienkiewicz, Pawe?; Konwerski, Szymon

2011-01-01

339

Erotylidae (Insecta, Coleoptera of Poland – problematic taxa, updated keys and new records  

Directory of Open Access Journals (Sweden)

Full Text Available New data concerning the occurrence of pleasing fungus beetles (Coleoptera: Erotylidae in Poland are given, with a focus on rare and difficult to identify Central European taxa. Cryptophilus cf. integer (Heer (Cryptophilinae is reported from the Polish territory for the first time based on adult and larval specimens collected in the Wielkopolska-Kujawy Lowland. Identification problems concerning species of Cryptophilus introduced to Europe are discussed. Triplax carpathica Reitter (Erotylinae is recorded from the Bia?owie?a Primeval Forest, which is the first known non-Carpathian finding of this species, located in the close proximity of the Polish-Belarussian UNESCO World Heritage Site “Bia?owie?a Forest”. Discussion of T. carpathica being conspecific with Siberian T. rufiventris Gebler is provided. New Polish localities of several other Erotylidae are reported, and an updated key to Central European species of Triplax is given. The Triplax key is supplemented with dorsal and ventral habitus images of all treated Triplax species. One of the rarest Central European erotyline species Combocerus glaber (Schaller is recorded from xerothermic grasslands in North-West Poland.

Rafal Ruta

2011-10-01

340

Erotylidae (Insecta, Coleoptera) of Poland – problematic taxa, updated keys and new records  

Science.gov (United States)

Abstract New data concerning the occurrence of pleasing fungus beetles (Coleoptera: Erotylidae) in Poland are given, with a focus on rare and difficult to identify Central European taxa. Cryptophilus cf. integer (Heer) (Cryptophilinae) is reported from the Polish territory for the first time based on adult and larval specimens collected in the Wielkopolska-Kujawy Lowland. Identification problems concerning species of Cryptophilus introduced to Europe are discussed. Triplax carpathica Reitter (Erotylinae) is recorded from the Bia?owie?a Primeval Forest, which is the first known non-Carpathian finding of this species, located in the close proximity of the Polish-Belarussian UNESCO World Heritage Site “Bia?owie?a Forest”. Discussion of Triplax carpathica being conspecific with Siberian Triplax rufiventris Gebler is provided. New Polish localities of several other Erotylidae are reported, and an updated key to Central European species of Triplax is given. The Triplax key is supplemented with dorsal and ventral habitus images of all treated Triplax species. One of the rarest Central European erotyline species Combocerus glaber (Schaller) is recorded from xerothermic grasslands in North-West Poland. PMID:22140339

Ruta, Rafa?; Ja?oszy?ski, Pawe?; Sienkiewicz, Pawe?; Konwerski, Szymon

2011-01-01

341

Impact of hemodialysis on dual X-ray absorptiometry, bioelectrical impedance measurements, and anthropometry  

DEFF Research Database (Denmark)

Dual X-ray absorptiometry (DXA) performs noninvasive assessment of bone and soft tissue with high precision. However, soft tissue algorithms assume that 73.2% of the lean body mass is water, a potential source of error in fluid retention. We evaluated DXA (model QDR-2000; Hologic Inc, Waltham, MA), bioelectrical impedance analysis (BIA), and simple anthropometry in 19 patients (9 women and 10 men, mean age 46 y) before and after hemodialysis, removing 0.9-4.3 L (x: 2.8L) of ultrafiltrate. The reduction in fat-free mass (FFM) measured by DXA was highly correlated with the ultrafiltrate, as determined by the reduction in gravimetric weight (r = 0.975, P <0.0001; SEE: 233 g), whereas BIA was considerably less accurate in assessing FFM reductions (r = 0.66, P <0.01; SEE: 757 g). Lumbar bone mineral density (BMD) was unaffected by dialysis, as were whole-body fat and BMD. Whole-body bone mineral content, however, was estimated to be 0.6% lower after dialysis. None of the simple anthropometric measurements correlated significantly with the reduction in FFM. In an unmodified clinical setting, DXA appears to be superior to other simple noninvasive methods for determining body composition, particularly when the emphasis is on repeated measurements.

Abrahamsen, Bo; Hansen, T B

1996-01-01

342

Formulación de una ecuación para predecir la masa grasa corporal a partir de bioimpedanciometría en adultos en un amplio rango de edad e índice de masa corporal Formulation of an equation to predict fat mass using bioelectrical impedance in adults in a wide range of ages and body mass index  

Directory of Open Access Journals (Sweden)

Full Text Available Background: Bioelectrical impedance (BIA has a good correlation and agreement with reference techniques, such as dual energy X-ray absorptiometry (DEXA, to assess body composition. Aim: To develop and assess the concordance of an equation to predict body fat mass derived from anthropometric data, gender, age and resistance obtained from bioelectrical impedance in adults, using DEXA as the reference method. Patients and Methods: Cross-sectional study of 62 women and 59 men aged 18 to 64 years with a body mass index ranging from 18.5 to 34.8 kg/ m². The equation was constructed using a predictive statistical model, considering sex, age, weight, resistance index (height²(cm/ resistance (ohms, as independent variables, and fat mass as the dependent variable. Results: The R² of the regression model was 0.96, and the standard error of estimation was 2.58 kg (p 0.05 and - 4.5 ± 8,9% (p < 0.05 in both genders and in women, respectively. Conclusions: The concordance between estimation of fat mass by the formula developed in this work and by DEXA was better than the estimation obtained using the formula proposed by the manufacturer of the BIA equipment.

Ingrid Schifferli

2011-12-01

343

«¿Entiendes lo que estás leyendo?»: (Hch 8,30) Acerca de la traducción de la Biblia de la Iglesia en América / «Do you understand what you read?»: (Acts 8,30) About the translation of the Bible of the Church in America  

Scientific Electronic Library Online (English)

Full Text Available SciELO Chile | Language: Spanish Abstract in spanish El presente artículo tiene como objetivo presentar los criterios utilizados para la traducción de la Sagrada Escritura llamada Biblia de la Iglesia en América (BIA). Lo que se busca responder es ¿Qué hermenéutica está en la base de esta nueva traducción promovida por el Consejo Episcopal Latinoameri [...] cano (CELAM)?. Estas páginas quieren destacar que la Sagrada Escritura no es un libro cualquiera sino que se trata de la expresión literaria de la religión de un pueblo. Por otra parte, el tema de este artículo puede ayudar al lector a evaluar la calidad de las traducciones bíblicas que circulan en la actualidad y a determinar los criterios que permitan saber cuándo usar una traducción y cuándo emplear otra. Abstract in english This article aims to present the criteria used for the translation of the Bible called the Holy Scriptures of the Church in America (BIA). We seek to answer the question: What is the basis hermeneutics of this new translation sponsored by the Latin American Episcopal Council (CELAM)? These pages wan [...] t to emphasize that Scripture is not just any book, but it is the literary expression of the religion of a people. Moreover, the theme of this article can help the reader to evaluate the quality of biblical translations currently circulating and the criteria for determining when to use a translation or another.

Santiago, Silva Retamales.

2012-09-01

344

Evolução hospitalar de pacientes submetidos a assistência circulatória com balão intra-aórtico durante intervenção coronária percutânea de alto risco: registro InCor / In-hospital outcomes of patients submitted to circulatory support with intra-aortic balloon pump during high risk percutaneous coronary intervention: InCor registry  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese INSTRODUÇÃO: O balão intra-aórtico (BIA) é utilizado há décadas como dispositivo de assistência circulatória, sendo recomendado na maioria das diretrizes, apesar da fraca evidência em relação à redução da mortalidade. O objetivo deste estudo foi avaliar o uso do BIA como ferramenta adjunta na interv [...] enção coronária percutânea (ICP). MÉTODOS: Registro unicêntrico que analisou a evolução hospitalar de 134 pacientes consecutivos que utilizaram BIA durante ICP de alto risco ou na vigência de choque cardiogênico. RESULTADOS: A média de idade foi de 64,7 + 12,5 anos e 67,9% eram do sexo masculino. A população apresentou características de alto risco, com 33,5% de diabéticos, 73,1% tratados na vigência de infarto do miocárdio, 68,6% com padrão triarterial, e fração de ejeção do ventrículo esquerdo de 38,6 + 16,1%. Fluxo TIMI 2/3 foi obtido em 86,4% dos casos, sendo tratada 1,6 + 0,6 lesão/paciente. Ocorreram 18 (13,4%) reinfartos, dos quais 9 (6,7%) por trombose do stent, sendo 2 (1,4%) pacientes encaminhados para cirurgia de revascularização miocárdica e 16 (11,9%), para nova ICP. A mortalidade hospitalar foi de 61,2% e a taxa de eventos cardíacos adversos maiores (ECAM) foi de 67,2%. Por análise multivariada, foram preditores de mortalidade: idade > 65 anos, ICP prévia, necessidade de diálise e padrão triarterial. Os preditores de sobrevida foram: função ventricular normal, fluxo TIMI 2/3 ao final do procedimento e permanência do BIA > 72 horas. CONCLUSÕES: Os pacientes que utilizaram BIA durante ICP apresentaram perfil clínico de risco muito alto, que se refletiu em elevada taxa de óbito. Fatores clínicos, angiográficos e do procedimento podem identificar variáveis que interferem independentemente na mortalidade. Abstract in english BACKGROUND: The intra-aortic balloon pump (IABP) has been used for decades as a circulatory support device, being recommended in most guidelines, despite poor evidence of mortality reduction. The purpose of this study was to evaluate the use of IABP as an adjunct therapy in percutaneous coronary int [...] ervention (PCI). METHODS: Single center registry analyzing in-hospital outcomes of 134 consecutive patients submitted to IABP during high risk PCI or in the presence of cardiogenic shock. RESULTS: Mean age was 64.7 + 12.5 years and 67.9% were males. The population presented high-risk features, with 33.5% of diabetic patients, 73.1% treated in the presence of myocardial infarction, 68.6% with three-vessel disease and left ventricular ejection fraction of 38.6 + 16.1%. TIMI 2/3 flow was obtained in 86.4% of the cases and 1.6 + 0.6 lesion/patient was treated. There were 18 (13.4%) reinfarctions, of which 9 (6.7%) were due to stent thrombosis, 2 (1.4%) patients were referred for CABG and 16 (11.9%) for a new PCI. Hospital mortality was 61.2% and the major adverse cardiac events (MACE) rate was 67.2%. By multivariate analysis, predictors of mortality were: age > 65 years, prior PCI, need of dialysis and three-vessel disease. Predictors of survival were: normal ventricular function, TIMI 2/3 flow at the end of the procedure and IABP utilization > 72 hours. CONCLUSIONS: Patients undergoing PCI with IABP support have a very high risk clinical profile, which led to high mortality rates. Clinical, angiographic and procedure-related factors can identify independent variables for mortality.

Fábio, Conejo; Luciano Nunes dos, Santos; Henrique Barbosa, Ribeiro; Carlos A., Campos; Antônio Hélio, Pozetti; Augusto C., Lopes Jr.; Rodrigo Barbosa, Esper; Antônio Esteves, Filho; André Gasparini, Spadaro; Paulo Rogério, Soares; Marco Antonio, Perin; Expedito E., Ribeiro; Gilberto, Marchiori.

2011-12-01

345

Impact of Atmospheric Attenuations Time Resolutions in Solar Radiation Derived from Satellite Imagery  

Science.gov (United States)

Accurate knowledge of solar irradiance components at the earth surface is of highly interest in many scientific and technology branches concerning meteorology, climate, agriculture and solar energy applications. In the specific case of solar energy systems the solar resource analysis with accuracy is a first step in every project since it is a required data for design, power output estimations, systems simulations and risk assessments. Solar radiation measurement availability is increasing both in spatial density and in historical archiving. However, it is still quite limited and most of the situations cannot make use of a long term ground database of high quality since solar irradiance is not generally measured where users need data. Satellite-derived solar radiation estimations are a powerful and valuable tool for solar resource assessment studies that have achieved a relatively high maturity due to years of developments and improvements. However, several sources of uncertainty are still present in satellite-derived methods. In particular, the strong influence of atmospheric attenuation information as input to the method is one of the main topics of improvement. Since solar radiation attenuation by atmospheric aerosols, and water vapor in a second place, is, after clouds, the second most important factor determining solar radiation, and particularly direct normal irradiance, the accurate knowledge of aerosol optical depth and water vapor content is relevant in the final output of satellite-derived methods. This present work, two different datasets we are used for extract atmospheric attenuation information. On the one hand the monthly mean values of the Linke turbidity factor from Meteotest database, which are twelve unique values of the Linke turbidity worldwide with a spatial resolution of 1/12º. On the other hand, daily values of AOD (Aerosol Optical Depth) at 550 nm, Angstrom alpha exponent and water vapor column were taken from a gridded database that combines MODIS Terra satellite and Aqua, C005 data collection. The AOD at 550 nm in the C005 collection data of MODIS have been proven to be more accurate than the previous version in assessment studies using AERONET data. The need of daily information of aerosol attenuation parameters has been clearly observed in places where aerosol optical depth variability is high (as the case of India). In addition, the sensitivity to the clear sky model used in the methodology has been also briefly analyzed, but a deeper analysis would require more extensive ground measurement. The sensitivity results show that, as expected, DNI estimations are much more sensible to the atmospheric attenuation input than GHI. The GHI response to the atmospheric aerosol loading is modulated by the positive feedback of the diffuse component and by the angular projection. When comparing the sensitivity of satellite estimations in Spain and India, it is pointed out than the higher aerosol loading and dynamics that normally occurs over India cause higher variability of both GHI and DNI satellite calculations.

Cony, Marco; Liria, Juan; Weisenberg, Ralf; Serrano, Enrique

2014-05-01

346

Dust indicator maps for improving solar radiation estimation from satellite data  

Science.gov (United States)

Measurement of solar radiation from ground-based sensors is an expensive process as it requires large number of ground measurement stations to account for the spatial variability. Moreover, the instruments require regular maintenance. Satellite data can be used to model solar radiation and produce maps in regular intervals, which can be used for solar resource assessment. The models can either be empirical, physics-based or statistical models. However, in environments such as the United Arab Emirates (UAE) which are characterized by heavy dust, the results obtained by the models will lead to lower accuracies. In this study, we build on the model developed in [1], where ensembles of ANNs are used separately for cloudy and cloud-free pixels to derive solar radiation maps using the data acquired in the thermal channels of the Meteosat SEVIRI instrument. The model showed good accuracies for the estimation of direct normal irradiance (DNI), diffuse horizontal irradiance (DHI) and global horizontal irradiance (GHI); where the relative root mean square error (rRMSE) values for the DNI, DHI and GHI were 15.7, 23.6 and 7.2%, respectively, while the relative mean bias error (rMBE) values were +0.8, +8.3 and +1.9%, respectively. However, an analysis of the results on different dusty days showed varying accuracy. To further improve the model, we propose to use the dust indicator maps as inputs to the model. An interception index was proposed in [2] to detect dust over desert regions using visible channels of the SEVIRI instrument. The index has a range of 0 to 1 where the value of 1 corresponds to heavy dust and 0 corresponds to clear conditions. There is ongoing work to use the measurements from AERONET stations to derive dust indicator maps based on canonical correlation analysis, which relates the thermal channels to the aerosol optical depth (AOD) derived at different wavelengths from the AERONET measurements. There is also an ongoing work to analyze the time series of the SEVIRI data to derive dust maps. In this work, the dust indicator maps are used as extra inputs to the ANN to model the dusty conditions in a better way.

Marpu, P. R.; Eissa, Y.; Al Meqbali, N.; Ghedira, H.

2012-12-01

347

Assessment of the Level-3 MODIS daily aerosol optical depth in the context of surface solar radiation and numerical weather modeling  

Science.gov (United States)

The Level-3 MODIS aerosol optical depth (AOD) product offers interesting features for surface solar radiation and numerical weather modeling applications. Remarkably, the Collection 5.1 dataset extends over more than a decade, and provides daily values of AOD over a global regular grid of 1°×1° spatial resolution. However, most of the validation efforts so far have focused on Level-2 products (10-km, at original resolution) and only rarely on Level-3 (at aggregated spatial resolution of 1°×1°). In this contribution, we compare the Level-3 Collection 5.1 MODIS AOD dataset available since 2000 against observed daily AOD values at 550 nm from more than 500 AERONET ground stations around the globe. One aim of this study is to check the advisability of this MODIS dataset for surface shortwave solar radiation calculations using numerical weather models. Overall, the mean error of the dataset is 0.03 (17%, relative to the mean ground-observed AOD), with a root mean square error of 0.14 (73%, relative to the same), albeit these values are found highly dependent on geographical region. For AOD values below about 0.3 the expected error is found very similar to that of the Level-2 product. However, for larger AOD values, higher errors are found. Consequently, we propose new functions for the expected error of the Level-3 AOD, as well as for both its mean error and its standard deviation. Additionally, we investigate the role of pixel count vis-à-vis the reliability of the AOD estimates. Our results show that a higher pixel count does not necessarily turn into a more reliable AOD estimate. Therefore, we recommend to verify this assumption in the dataset at hand if the pixel count is meant to be used. We also explore to what extent the spatial aggregation from Level-2 to Level-3 influences the total uncertainty in the Level-3 AOD. In particular, we found that, roughly, half of the error might be attributable to Level-3 AOD sub-pixel variability. Finally, we use a~radiative transfer model to investigate how the Level-3 AOD uncertainty propagates into the calculated direct normal (DNI) and global horizontal (GHI) irradiances. Overall, results indicate that, for Level-3 AODs smaller than 0.5, the induced uncertainty in DNI due to the AOD uncertainty alone is below 15% on average, and below 5% for GHI (for a solar zenith angle of 30°. However, the uncertainty in AOD is highly spatially variable, and so is that in irradiance.

Ruiz-Arias, J. A.; Dudhia, J.; Gueymard, C. A.; Pozo-Vázquez, D.

2012-09-01

348

Evaluation of SUNY satellite-to-irradiance model performance using ECMWF GEMS daily aerosol optical depth reanalysis data  

Science.gov (United States)

The current version of the State University of New York (SUNY) radiative transfer model (RTM) uses climatological monthly averages derived from a National Renewable Energy Labs (NREL) gridded dataset to parameterize aerosol optical depth (AOD), water vapor and ozone. This is mostly due to the limited availability of high spatially and temporally resolved observations. Several global chemical transport models are analyzed and compared in depth to determine which daily AOD dataset should be implemented into the SUNY Model. After thorough comparison, the chemical transport model chosen was the Global and regional Earth-system Monitoring using satellite and in-situ data (GEMS) model developed by the European Center for Medium Range Weather Forecasts (ECMWF). Using daily AOD values instead of monthly climatological values, the SUNY Model better captures events of extreme aerosol loadings, which greatly improves the accuracy in calculations of direct normal irradiance (DNI) and to a lesser extent, global horizontal irradiance (GHI). In clear-sky conditions with the sun directly overhead, a change in AOD from 0.1 to 0.5 is found to cause a 55% (20%) decrease in DNI (GHI) for Desert Rock, Nevada in January. A calibration scheme is applied to the daily GEMS AOD reanalysis data. For each site, the monthly means of the GEMS daily AOD are corrected by a factor to match the currently used monthly climatological AOD in order to avoid large errors caused by changing the magnitude of the monthly average AOD. The performance of the SUNY model improved significantly for many of the stations analyzed in this work after applying the daily-calibrated GEMS AOD. The Root Mean Squared Error (RMSE) was the most notable statistical improvement, which measures the model’s precision compared to the observed measurements from a ground station, and many other statistical improvements are also evident. All 7 SURFRAD locations showed improvements in DNI RMSE after using the calibrated GEMS daily AOD compared to the monthly climatological AOD values currently used. On average, the mean bias error decreased significantly for all SURFRAD stations as well.

Itterly, Kyle F.

349

Assessment of the Level-3 MODIS daily aerosol optical depth in the context of surface solar radiation and numerical weather modeling  

Directory of Open Access Journals (Sweden)

Full Text Available The Level-3 MODIS aerosol optical depth (AOD product offers interesting features for surface solar radiation and numerical weather modeling applications. Remarkably, the Collection 5.1 dataset extends over more than a decade, and provides daily values of AOD over a global regular grid of 1°×1° spatial resolution. However, most of the validation efforts so far have focused on Level-2 products (10-km, at original resolution and only rarely on Level-3 (at aggregated spatial resolution of 1°×1°. In this contribution, we compare the Level-3 Collection 5.1 MODIS AOD dataset available since 2000 against observed daily AOD values at 550 nm from more than 500 AERONET ground stations around the globe. One aim of this study is to check the advisability of this MODIS dataset for surface shortwave solar radiation calculations using numerical weather models. Overall, the mean error of the dataset is 0.03 (17%, relative to the mean ground-observed AOD, with a root mean square error of 0.14 (73%, relative to the same, albeit these values are found highly dependent on geographical region. For AOD values below about 0.3 the expected error is found very similar to that of the Level-2 product. However, for larger AOD values, higher errors are found. Consequently, we propose new functions for the expected error of the Level-3 AOD, as well as for both its mean error and its standard deviation. Additionally, we investigate the role of pixel count vis-à-vis the reliability of the AOD estimates. Our results show that a higher pixel count does not necessarily turn into a more reliable AOD estimate. Therefore, we recommend to verify this assumption in the dataset at hand if the pixel count is meant to be used. We also explore to what extent the spatial aggregation from Level-2 to Level-3 influences the total uncertainty in the Level-3 AOD. In particular, we found that, roughly, half of the error might be attributable to Level-3 AOD sub-pixel variability. Finally, we use a~radiative transfer model to investigate how the Level-3 AOD uncertainty propagates into the calculated direct normal (DNI and global horizontal (GHI irradiances. Overall, results indicate that, for Level-3 AODs smaller than 0.5, the induced uncertainty in DNI due to the AOD uncertainty alone is below 15% on average, and below 5% for GHI (for a solar zenith angle of 30°. However, the uncertainty in AOD is highly spatially variable, and so is that in irradiance.

J. A. Ruiz-Arias

2012-09-01

350

Compound-specific radiocarbon analysis of atmospheric PAH from a wood smoke-impacted city in Northern Sweden  

International Nuclear Information System (INIS)

Full text: Atmospheric polycyclic aromatic hydrocarbons (PAHs) are ubiquitous due to their emission from a variety of combustion sources including motor vehicle exhaust and other fossil fuel combustion and biomass burning. Their potential to detrimentally impact human and ecological health makes it vital to apportion these compounds to emission sources. PAHs also have a wide range in volatility and can be present in both the gas and particulate phase in the atmosphere. However, PAHs present in high concentrations in the atmosphere are not source-specific and can be difficult to trace back to their original emission sources. Natural abundance radiocarbon analysis offers a trusted method for determining the fraction of modern versus fossil carbon and recent advances in micro-scale techniques have opened the door for compound class-specific radiocarbon analysis (CCSRA) of organic compounds at the low levels present in environmental samples. Atmospheric levels of PAHs provide a particular challenge due to difficulties in obtaining a sample with sufficient mass for radiocarbon analysis. Initial studies in Europe and Japan have shown a wide range of biomass burning contribution from 10 % of pooled PAHs for two background sites in south Europe to up to 45 % in Tokyo and 50 % at a background site in Sweden. Compound-specific radiocarbon analysis (CSRA) of atmospheric PAHs would further enhance the understanding of emission source impacts on ambient concentrations and has not cts on ambient concentrations and has not been previously reported. In this study, CSRA was applied to a set of atmospheric samples collected in Lycksele, a city in Northern Sweden which has frequent episodes of severe atmospheric pollution in the winter. Previous studies carried out in the city have shown that wood combustion for residential heating has a large impact on atmospheric aerosol followed by motor vehicle emissions. This combination provided an ideal location for CSRA to apportion atmospheric PAHs between fossil fuel combustion and wood smoke. In order to maximize sample collection mass, a high volume total suspended particulate matter (TSP) sampler loaded with quartz fiber filters for PM collection and PUFs (polyurethane foam) for volatile species was used in this study. Five different particulate PAH samples were analyzed by CSRA including: phenanthrene, fluoranthene, pyrene, benzo[b+k]fluoranthene and indeno[cd]pyrene+benzo[ghi]perylene whereas phenanthrene was the only compound also analyzed in the gas phase. The percentage wood smoke contribution ranged from 70 % for indeno[cd]pyrene+benzo[ghi]perylene to 87 % for the PUF phenanthrene and particulate pyrene. There was a distinct molecular-weight trend (r2 = 0.68) to the fraction wood smoke contribution with higher contribution for the lower molecular-weight PAHs. (author)

351

Profile distribution of polycyclic aromatic hydrocarbons in soils of drained peatlands after wildfires (Moscow region, Russia)  

Science.gov (United States)

Polycyclic aromatic compounds (PAHs) are formed in different natural and anthropogenic processes and could be found in many landscape components. These compounds are carcinogenic and belong to the group of persistent organic pollutants. The anthropogenic sources of PAHs are well-studied, but insufficient data are available on the hightemperature production of PAHs in natural processes. For example, natural fires are frequently related to the PAHs sources in landscapes, but very little factual data are on this topic. The soils of drained peatlands affected by catastrophic wildfires of 2010 and 2002 were studied in the Eastern part of Moscow Region (Russia). A total of 14 profiles of histosols and histic podsols were investigated. These series included soils of plots subjected to fires of different intensities and age, as well as soils of the background plots. Soil samples were taken from genetic horizons and from every 10 cm. The samples were analyzed for the contents of 14 prevailing individual compounds: fluorene, naphthalene, phenanthrene, chrysene, pyrene, anthracene, tetraphene, benz[a]pyrene, benzo[ghi]perylene, benzo[e]pyrene, coronene, dibenztiophene, triphenilene, benz(k)fluorantene. Morfological properties of soils after wildfires on drained peatlands were changed dramatically, the horizons of ash and char instead of organic layers were formed. These new horizons differ in the capability of PAHs accumulation. The char horizons have the highest concentrations of PAHs - up to 300 ng/g because of incomplete burning of organic matter in this sites, and the ash horizons, where the complete burning occured, contain only 10 ng/g PAHs. The highest concentrations of PAHs in soil profiles were detected after recent fires, and in cases of thick peat layers. After the combustion of peat chrysene, benz[a]pyrene, benz[e]pyrene, benzo[ghi]perylene, benz(k)fluorantene and tetraphene accumulated in soils. This is mainly the group of 4-6-nuclear compounds. The formation of high-molecular weight compounds is possible during smoldering process under a low oxygen supply. The oxygen deficit acts as a factor of the organic fragments recombination and PAHs production; therefore, relatively large amounts of PAHs are formed in peat fires. Moreover the peat fires occur directly in the soil layer; therefore, larger amounts of the resulting PAHs remain in the soils of the fire sites. The migration of low-molecular weight compounds occures in histic podsols, in histosols PAHs accumalate only in upper organic horizons. The research was conducted with the support of Russian Geographical Society.

Tsibart, Anna; Gennadiev, Alexander; Koshovskii, Timur; Kovach, Roman

2014-05-01

352

Consequences of flagellin export through the type III secretion system of Pseudomonas syringae reveal a major difference in the innate immune systems of mammals and the model plant Nicotiana benthamiana.  

Science.gov (United States)

Bacterial flagellin is perceived as a microbe (or pathogen)-associated molecular pattern (MAMP or PAMP) by the extracellular pattern recognition receptors, FLS2 and TLR5, of plants and mammals respectively. Flagellin accidently translocated into mammalian cells by pathogen type III secretion systems (T3SSs) is recognized by nucleotide-binding leucine-rich repeat receptor NLRC4 as a pattern of pathogenesis and induces a death-associated immune response. The non-pathogen Pseudomonas fluorescens Pf0-1, expressing a Pseudomonas syringae T3SS, and the plant pathogen P. syringae pv. tomato DC3000 were used to seek evidence of an analogous cytoplasmic recognition system for flagellin in the model plant Nicotiana benthamiana. Flagellin (FliC) was secreted in culture and translocated into plant cells by the T3SS expressed in Pf0-1 and DC3000 and in their ?flgGHI flagellar pathway mutants. ?fliC and ?flgGHI mutants of Pf0-1 and DC3000 were strongly reduced in elicitation of reactive oxygen species production and in immunity induction as indicated by the ability of challenge bacteria inoculated 6 h later to translocate a type III effector-reporter and to elicit effector-triggered cell death. Agrobacterium-mediated transient expression in N. benthamiana of FliC with or without a eukaryotic export signal peptide, coupled with virus-induced gene silencing of FLS2, revealed no immune response that was not FLS2 dependent. Transiently expressed FliC from DC3000 and Pectobacterium carotovorum did notinduce cell death in N. benthamiana, tobacco or tomato leaves. Flagellin is the major Pseudomonas?MAMP perceived by N. benthamiana, and although flagellin secretion through the plant cell wall by the T3SS may partially contribute to FLS2-dependent immunity, flagellin in the cytosol does not elicit immune-associated cell death. We postulate that a death response to translocated MAMPs would produce vulnerability to the many necrotrophic pathogens of plants, such as P.?carotovorum, which differ from P. syringae and other (hemi)biotrophic pathogens in benefitting from death-associated immune responses. PMID:23107228

Wei, Hai-Lei; Chakravarthy, Suma; Worley, Jay N; Collmer, Alan

2013-04-01

353

Comparative assessment of the recognition of domain-specific CD163 monoclonal antibodies in human monocytes explains wide discrepancy in reported levels of cellular surface CD163 expression  

DEFF Research Database (Denmark)

BACKGROUND: CD163 is expressed exclusively on cells of the monocyte/macrophage lineage and is widely used as a marker of human macrophages. Further, it has been suggested as a diagnostic marker of monocyte/macrophage activity in inflammatory conditions and as a therapeutic target. However, studies continue to exhibit great discrepancy in the measured percentage of CD163-expressing blood monocytes in healthy individuals. In this study we sought to clarify this inconsistency in reported levels of CD163 surface expression by a detailed analysis of a panel of CD163 antibodies used in previous studies. MATERIALS AND METHODS: The cellular distribution of CD163 on human peripheral blood monocytes in freshly drawn blood and peripheral blood mononuclear cells isolated from buffy-coats was investigated by flow cytometry using CD163 monoclonal antibodies recognizing scavenger receptor cysteine-rich (SRCR) domain 1 (MAC2-158), domain 4 (R-20), domain 7 (GHI/61), and domain 9 (RM3/1). The CD163 monoclonal antibodies werecharacterized in binding and endocytosis experiments in human macrophages and CD163-transfected Flp-In CHO cells. Calcium-dependent ligand binding was assessed using surface plasmon resonance, and the specificity of the CD163 monoclonal antibodies was analyzed by western blotting. RESULTS AND DISCUSSION: Flow cytometric analysis revealed that the estimated proportion of CD163-expressing human peripheral blood monocytes increased when using CD163 monoclonal antibodies recognizing epitopes in the N-terminal part of CD163, remote from the membrane surface. Moreover, the proportion of CD163 positive monocytes observed was highly dependent on free calcium. GHI/61 did not exhibit CD163 binding in the presence of calcium as measured by surface plasmon resonance, which was in agreement with the concordant loss of binding in heparin-stabilized whole blood observed by flow cytometry. In contrast, RM3/1 exhibited weak binding to CD163 in the absence of calcium but high affinity binding to CD163 in the presence of calcium. R-20 and MAC2-158 were unaffected by extracellular calcium levels. The latter SRCR domain 1mAb consistently recognized more than 80% CD163-positive monocytes in human peripheral blood. CONCLUSION: Epitope accessibility and extracellular calcium dependence elucidate discrepancies in reported levels of monocytic CD163 expression. Utilizing monoclonal antibodies to the N-terminal part of CD163 more than 80% monocytes in human peripheral blood could be identified as CD163 positive, indicating that most, and conceivably all, human peripheral blood monocytes do express CD163.

Maniecki, Maciej Bogdan; Etzerodt, Anders

2011-01-01

354

Spark ignition vehicle contributions to atmospheric fine elemental carbon concentrations in coastal, rural and urban communities using polycyclic aromatic hydrocarbon tracers in the CMB model modified for reactivity  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: English Abstract in portuguese Repartimos a parcela do componente de carbono elementar (CE) em PM2,5 atmosférico atribuível à emissões de veículos com ignição por faísca (SI) em amostras coletadas durante dois anos em doze comunidades no Sul da Califórnia, incluindo zonas costeiras, rurais e urbanas usando o Modelo de Balanço de [...] Massa Química (CMB8) modificado para levar em conta a reatividade dos hidrocarbonetos policíclicos aromáticos (HPAs). Foram avaliadas as razões HPA/CE em amostras coletadas no túnel Caldecott para utilização como assinaturas das fontes. A reatividade dos HPAs que ocorre durante o transporte de aerossóis atmosféricos que pode afetar as estimativas de contribuição das fontes (ECF) durante o verão/primavera/outono foi considerada com o uso de constantes de decaimento medidas experimentalmente. Nossos resultados mostram que o benzo[ghi]perylene e o indeno[1,2,3-cd]pireno podem ser utilizados com sucesso como marcadores específicos de CE nas emissões por veículos com SI. A estimativa média da porção de CE atribuído pelo modelo à emissões provenientes de SI nessas comunidades foi de 39, 58 e 62%, respectivamente, durante o verão, primavera/outono, e inverno. Para todas as comunidades costeiras, as atribuições a veículos por SI representam cerca do dobro das estimativas para as áreas rurais e urbanas, antes de dezembro 2003 quando MTBE ainda era usado na California. Abstract in english We apportioned the elemental carbon (EC) component of ambient PM2.5 attributable to emissions from spark ignition (SI) vehicles in samples collected over a three-year period in twelve Southern California communities, including coastal, rural, and urban areas using the chemical mass balance model (CM [...] B8) modified for polycyclic aromatic hydrocarbon (PAH) reactivity. Selected PAH/EC ratios, measured in samples collected in the Caldecott tunnel were evaluated for use as fingerprints. PAH reactivity which occurs during atmospheric transport and affects the source contribution estimates during the summer/fall/spring months was accounted for using experimentally measured decay constants. Results showed that benzo[ghi]perylene and indeno[1,2,3-cd]pyrene can be used successfully as specific tracers of EC contributions from SI vehicles. The average EC portion of PM2.5 attributed by the model to SI emissions at these communities was 39, 58 and 62%, respectively, during the summer, spring/autumn, and winter. For all seasons, coastal community contributions represent about twice those found in the rural and urban inland communities, before December 2003 when MTBE was still in use in California.

Arantzazu, Eiguren-Fernandez; Antonio H., Miguel.

1358-13-01

355

Air Temperature estimation from Land Surface temperature and solar Radiation parameters  

Science.gov (United States)

Air Temperature (AirT) is a fundamental parameter in a wide range of applications such as climate change studies, weather forecast, energy balance modeling, efficiency of Photovoltaic (PV) solar cells, etc. Air temperature data are generally obtained through regular measurements from meteorological stations. The distribution of these stations is normally sparse, so the spatial pattern of this parameter cannot be accurately estimated by interpolation methods. This work investigated the relationship between Air Temperature measured at meteorological stations and spatially contiguous measurements derived from Remote Sensing techniques, such as Land Surface Temperature (LST) maps, emissivity maps and shortwave radiation maps with the aim of creating a continuous map of AirT. For LST and emissivity, MSG-SEVIRI LST product from Land Surface Analysis Satellite Applications Facility (LSA-SAF) has been used. For shortwave radiation maps, an Artificial Neural Networks ensemble model has been developed and previously tested to create continuous maps from Global Horizontal Irradiance (GHI) point measurements, utilizing six thermal channels of MSG-SEVIRI. The testing sites corresponded to three meteorological stations located in the United Arab Emirates (UAE), where in situ measurements of Air Temperature were available. From the starting parameters, energy fluxes and net radiation have been calculated, in order to have information on the incoming and outgoing long-wave radiation and the incoming short-wave radiation. The preliminary analysis (day and Night measurements, cloud free) showed a strong negative correlation (0.92) between Outgoing long-wave radiation - GHI and LST- AirT, with a RMSE of 1.84 K in the AirT estimation from the initial parameters. Regression coefficients have been determined and tested on all the ground stations. The analysis also demonstrated the predominant impact of the incoming short-wave radiation in the AirT hourly variation, while the incoming long-wave radiation remains almost constant during the testing period. To conclude, the final AirT maps have been used to calculate continuous maps of Net Radiation, showing an important application of the output of this work for surface energy balance retrieval.

Lazzarini, Michele; Eissa, Yehia; Marpu, Prashanth; Ghedira, Hosni

2013-04-01

356

DETERMINACION SIMULTANEA DE SEIS HIDROCARBUROS POLICICLICOS AROMATICOS EN MEDIO MICELAR POR REGRESION DE MINIMOS CUADRADOS PARCIALES (PLS-1 UTILIZANDO ESPECTROS DE FLUORESCENCIA DE ANGULO VARIABLE LINEAL  

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Full Text Available En este trabajo, se presenta la determinación espectrofuorimétrica simultánea de los hidrocarburos policíclicos aromáticos de interés medioambiental denominados benzo[ a] pireno, benzo[ e] pireno,benzo[ g,h,i] perileno, coroneno, dibenzo[ a,h] antraceno e indeno[ 1,2,3-c,d] pireno en medio micelar, utilizando el surfactante no iónico éterdel 10 laurilo polioxietileno (POLE. Con el fin de utilizar las señales de mayor sensibilidad para la determinación de cada uno de los compuestos en la mezcla, se registraron los espectros por fluorescencia de ángulo variable lineal. Debido al gran solapamiento espectral observado, la resolución del sistema multicomponente se efectuó aplicando el algoritmo de calibración multivariante conocido como Regresión por Mínimos Cuadrados Parciales tipo 1 (PLS-1. Se aplicaron diferentes criterios para la selección del número de factores óptimo para el modelo de calibración. Los resultados obtenidos tanto en mezclas sintéticas como en muestras de agua de dos orígenes distintos contaminados con cantidades conocidas de los hidrocarburos de interés fueron satisfactoriosThe multivariate calibration method partial least squares regression type 1 (PLS-1 was applied to the simultaneous spectrofluorimetric determination of aromatic polycyclic hydrocarbons of environmental interest, namely benzo[ a] pyrene,benzo[ e] pyrene, benzo[ g,h,i] perylene, coronene, dibenzo[ a,h] antrhracene and indeno[ 1,2,3-c,d] pyrene in micellar medium by using the non ionic surfactantpolyethylene ether (POLE. In order to employ the highest sensitivity signals for the determination of each of the compounds in the mixture, the corresponding linear variable angle fluorescence spectra were recorded. Several data characteristic are taken into account in order to minimize the optimum number of factors required for the construction of calibration model while using various statisticial criteria of selection. The statistical parameters obtained by internal and external validation of the optimum calibration model were in agreement, with satisfactory results. The results obtainedin both synthetic mixtures and in water samples of two different origins spiked with known quantities of hydrocarbons of interest are satisfactory

J. AMADOR-HERNANDEZ

1999-09-01

357

DETERMINACION SIMULTANEA DE SEIS HIDROCARBUROS POLICICLICOS AROMATICOS EN MEDIO MICELAR POR REGRESION DE MINIMOS CUADRADOS PARCIALES (PLS-1) UTILIZANDO ESPECTROS DE FLUORESCENCIA DE ANGULO VARIABLE LINEAL  

Scientific Electronic Library Online (English)

Full Text Available SciELO Chile | Language: Spanish Abstract in spanish En este trabajo, se presenta la determinación espectrofuorimétrica simultánea de los hidrocarburos policíclicos aromáticos de interés medioambiental denominados benzo[ a] pireno, benzo[ e] pireno,benz [...] o[ g,h,i] perileno, coroneno, dibenzo[ a,h] antraceno e indeno[ 1,2,3-c,d] pireno en medio micelar, utilizando el surfactante no iónico éterdel 10 laurilo polioxietileno (POLE). Con el fin de utilizar las señales de mayor sensibilidad para la determinación de cada uno de los compuestos en la mezcla, se registraron los espectros por fluorescencia de ángulo variable lineal. Debido al gran solapamiento espectral observado, la resolución del sistema multicomponente se efectuó aplicando el algoritmo de calibración multivariante conocido como Regresión por Mínimos Cuadrados Parciales tipo 1 (PLS-1). Se aplicaron diferentes criterios para la selección del número de factores óptimo para el modelo de calibración. Los resultados obtenidos tanto en mezclas sintéticas como en muestras de agua de dos orígenes distintos contaminados con cantidades conocidas de los hidrocarburos de interés fueron satisfactorios Abstract in english The multivariate calibration method partial least squares regression type 1 (PLS-1) was applied to the simultaneous spectrofluorimetric determination of aromatic polycyclic hydrocarbons of environmental interest, namely benzo[ a] pyrene,benzo[...] CE=Symbol>[ e] pyrene, benzo[ g,h,i] perylene, coronene, dibenzo[ a,h] antrhracene and indeno[ 1,2,3-c,d] pyrene in micellar medium by using the non ionic surfactantpolyethylene ether (POLE). In order to employ the highest sensitivity signals for the determination of each of the compounds in the mixture, the corresponding linear variable angle fluorescence spectra were recorded. Several data characteristic are taken into account in order to minimize the optimum number of factors required for the construction of calibration model while using various statisticial criteria of selection. The statistical parameters obtained by internal and external validation of the optimum calibration model were in agreement, with satisfactory results. The results obtainedin both synthetic mixtures and in water samples of two different origins spiked with known quantities of hydrocarbons of interest are satisfactory

J., AMADOR-HERNANDEZ; L., LOPEZ-MARTINEZ; P.L., LOPEZ-DE-ALBA; A., CALDERA; J.M., ESTELA; V., CERDA.

1999-09-01

358

Changes in body fluid and energy compartments during prolonged hunger strike / Alterações nos compartimentos hídricos e energéticos do organismo durante a greve de fome  

Scientific Electronic Library Online (English)

Full Text Available A privação total e prolongada de alimentos em adultos não-obesos é raramente vista, e poucos estudos documentaram as modificações da composição corpórea neste contexto.Num grupo de oito casos de greve de fome durante 43 dias, procedeu-se à estimativa dos compartimentos hídricos e energéticos, visand [...] o averiguar a influência sobre os mesmos da desnutrição progressiva.Os métodos incluiram índice de massa corporal (IMC), prega cutânea do tríceps (PCT), circunferência muscular do braço, e determinação através da bioimpedância (BIA) da água, massa gorda, massa magra e resistência corpórea total..A calorimetria indireta foi realizada em uma ocasião apenas.A idade do grupo era de 43,3± 6,2 anos (sete homens, uma mulher), somente água e ocasionais eletrólitos e vitaminas foram ingeridos no jejum, e a perda de peso média foi de 17,9%. Por volta do 43º dia da greve iniciou-se a reposição venosa rápida de fluidos, vitaminas e eletrólitos,antes de se prosseguir com a realimentação.A gordura corporal diminuiu em aproximadamente 60% (BIA e PCT), ao passo que o IMC caiu apenas 18%.A estimativa da gordura total inicial por BIA foi de 52,2± 5,4% do peso corporal, e mesmo no 43º dia do evento o valor calculado era de 19,7± 3,8% do peso.Os valores correspondentes deduzidos da PCT mostraram-se substancialmente inferiores, e mais compatíveis com os demais índices antropométricos. A água corporal revelou-se inicialmente contraída, com resistência elevada,sendo que estes achados se reverteram rapidamente por ocasião da hidratação venosa rápida.Quando do término da greve de fome o IMC (21,5± 2,6 kg/m²) e outras variáveis antropométricas revelavam-se numericamente aceitáveis, sugerindo eficiente conservação de musculatura e energia na fase de dieta zero.Conclui-se que: 1) Todos os compartimentos orgânicos se contrairam na greve de fome, porém o tecido adiposo foi de longe o mais afetado; 2) A água corporal mostrou-se reduzida com elevada resistência total, mas estes achados inverteram-se prontamente mediante hidratação parenteral; 3) O encontro de gordura total excessiva e de aumento da massa magra com o avançar do jejum sugerem que as leituras de BIA são inapropriadas para esta população e fornecem resultados incoerentes; 4) Com base nos parâmetros expostos os doentes não estavam morfologicamente desnutridos ao cabo de 43 dias, todavia não foram aqui avaliados outros transtornos de considerável importância prognóstica. Abstract in english Prolonged total food deprivation in non-obese adults is rare, and few studies have documented body composition changes in this setting. In a group of eight hunger strikers who refused alimentation for 43 days, water and energy compartments were estimated, aiming to assess the impact of progressive s [...] tarvation. Measurements included body mass index (BMI), triceps skinfold (TSF), arm muscle circumference (AMC), and bioimpedance (BIA) determinations of water, fat, lean body mass (LBM), and total resistance. Indirect calorimetry was also performed in one occasion. The age of the group was 43.3±6.2 years (seven males, one female). Only water, intermittent vitamins and electrolytes were ingested, and average weight loss reached 17.9%. On the last two days of the fast (43rd-44th day) rapid intravenous fluid, electrolyte, and vitamin replenishment were provided before proceeding with realimentation. Body fat decreased approximately 60% (BIA and TSF), whereas BMI reduced only 18%. Initial fat was estimated by BIA as 52.2±5.4% of body weight, and even on the 43rd day it was still measured as 19.7±3.8% of weight. TSF findings were much lower and commensurate with other anthropometric results. Water was comparatively low with high total resistance, and these findings rapidly reversed upon the intravenous rapid hydration. At the end of the starvation period, BMI (21.5±2.6 kg/m²) and most anthropometric determinations were still acceptable, suggesting efficient energy and muscle conservation. Conclusions: 1) All

Joel, Faintuch; Francisco Garcia, Soriano; José Paulo, Ladeira; Mariano, Janiszewski; Irineu Tadeu, Velasco; Joaquim J., Gama-Rodrigues.

2000-04-01

359

Retratos da avó na literatura infantil contemporânea de Ana Maria Machado e Ruth Rocha / Portraits de la grand-mère dans la littérature pour enfants de Ana Maria Machado et Ruth Rocha / Grand-mother´s portraits in contemporary Child Literature of Ana Maria Machado and Ruth Rocha / Retratos de la abuela en la literatura infantil contemporánea en Ana Maria Machado y Ruth Rocha  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese A literatura, além de entretenimento, é um meio de transmitir mensagens, de reflexão e discussão das questões humanas, portanto, um importante objeto de investigação psicossocial. Visando apreender a personagem avó, analisaram-se duas histórias para crianças de duas consagradas autoras contemporânea [...] s brasileiras, Bisa Bia Bisa Bel, de Ana Maria Machado, e Atrás da Porta, de Ruth Rocha. A metodologia qualitativa de análise de conteúdo possibilitou aventar as seguintes categorias: descrição dos personagens e de suas relações; análise dos símbolos à luz da Psicologia Analítica; contexto sócio-histórico; visão sobre educação; conceito de infância; e literatura como mensagem. As avós aparecem como representantes de geração(s) anterior(es), transmissoras da cultura e da tradição social, fontes de heranças simbólicas (cultural, familiar, intelectual), contribuindo para o desenvolvimento intelectual de seus netos e para a formação de sua identidade. Abstract in spanish La literatura, además de entretenimiento, es un medio de presentar mensajes, reflección y discusiones de cuestiones humanas, donde es un importante objeto de investigación psicosocial. Objetivando comprender el personaje de la abuela, fueran analizados dos libros para niños de dos consagradas autora [...] s contemporáneas brasileñas, Bisa Bia Bisa Bel, de Ana Maria Machado, y Atrás da Porta, de Ruth Rocha. La metodología cualitativa de análisis de contenido permitió las siguientes categorías: descripción de los personajes y de sus relaciones; análisis de los símbolos a la luz de la Psicología Analítica; contexto sociohistórico; visión sobre la educación; concepto de niñez; y literatura como mensaje. Las abuelas surgen como representantes de generación(es) anterior(es), transmisoras de la cultura y de la tradición social, fuentes de herencias simbólicas (cultural, familiar, intelectual), contribuyendo para el desarrollo intelectual de sus nietos y para la formación de su identidad. Abstract in english Besides leisure, literature is a means to present messages, reflection and discussion about human issues, therefore an important subject to psychosocial investigation. Aiming to understand the grandmother as a character two stories for children written by two well known Brazilian writers were analyz [...] ed, Bisa Bia Bisa Bel, by Ana Maria Machado and Atrás da Porta (Behind the Door), by Ruth Rocha. The qualitative approach of content analysis allowed the following categories: description of the characters and of their relationships; symbol analysis using Analytical Psychology; socio-historical context; authors’ comprehension about education; concept of infancy; and literature as a means for author’s message. Grand-mothers were presented as representing a previous generation(s), transmitting cultural and social tradition, sources of symbolic heritage (cultural, familiar, intellectual), contributing to their grandchildren’s intellectual development and identity formation.

Tâmara, Azevedo; Elaine Pedreira, Rabinovich.

2012-03-01

360

Prediction of RBC aggregability and deformability by whole body bioimpedance measurements analyzed according to Hanai's mixture conductivity theory.  

Science.gov (United States)

Bioelectrical impedancemetry (BIA) has been used to evaluate hemorheological parameters in vitro, and whole body impedance measurements are also correlated to some hemorheologic factors, due to their close relationship with determinants of electric properties of blood. In previous studies, we have determined a set of predictive equations for hematocrit, whole blood viscosity and plasma viscosity in both sedentary and trained individuals. Recent developments of the interpretation of BIA analysis based on Hanai's mixture conductivity theory allows a more interpretative analysis of the relationships between these electric measurements and body composition. Impedance can be analyzed in terms of resistance and resistivity of the whole body and even more, assuming some simplifications, resistance R and resistivity ? of total body water (TBW), extracellular water (ECW) and intracellular water (ICW). In this study we thus investigated relationships between blood rheology and these calculations of R and ? in a sample of 83 subjects (age: 9-64 yr; BMI: 17-44 kg/m(2)). BIA was performed with a multifrequency bioelectrical impedancemeter using low intensity at the following frequencies: 1, 5, 10, 50 and 100 kHz. Viscometric measurements were done with a falling ball viscometer. Hematocrit was measured with microcentrifuge. We found a new prediction of Quemada's viscometric index of RBC rigidity "k" which was positively correlated to the resistance of ECW (R(e)) and even more if it was related to this volume: k = 0.005809 R(e)/ECW + 1.1784 (r = 0.487; Bland-Altman mean difference: 0.0124; range: -0.00481 to 0.00296). A new finding was that red blood cells (RBC) aggregability, that in the previous studies was not related to whole body impedance, despite its in vitro measurability with such measurements, was correlated to extracellular resistance and resistivity. The Myrenne index "M" was negatively correlated to the resistivity of the extracellular fluid ?e and is predicted by: M = -27.4755 ?(e) + 1121.57029 (r = 0.463; Bland-Altman mean difference: 0.00194; range: -0.842 to 0.842). Furthermore, the SEFAM index "S(10)" is correlated to the ?e and is predicted by S(10) = -59.38579 (?(e)-40) + 63.083 (r = 0.761; Bland-Altman mean difference: 0.000722; range: -1.77 to 1.77). Therefore, a more in-depth analysis of electric properties of the body provides a closer approach of RBC rheology, although, of course, most remains to be understood in this intriguing domain. PMID:21339635

Varlet-Marie, Emmanuelle; Brun, Jean-Frédéric

2011-01-01

361

Parenteral nutrition support for patients with pancreatic cancer. Results of a phase II study  

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Full Text Available Abstract Background Cachexia is a common problem in patients (pts suffering from upper gastrointestinal cancer. In addition, most of these patients suffer from malabsorption and stenosis of the gastrointestinal tract due to their illness. Various methods of supplementary nutrition (enteral, parenteral are practised. In patients with advanced pancreatic cancer (APC, phase angle, determined by bio-electrical impedance analysis (BIA, seems to be a survival predictor. The positive influence of BIA determinate predictors by additional nutrition is currently under discussion. Methods To examine the impact of additional parenteral nutrition (APN we assessed outpatients suffering from APC and progressive cachexia. The assessment based on the BIA method. Assessment parameters were phase angle, ECM/BCM index (ratio of extracellular mass to body cell mass, and BMI (body mass index. Patients suffering from progressive weight loss in spite of additional enteral nutritional support were eligible for the study. Results Median treatment duration in 32 pts was 18 [8-35] weeks. Response evaluation showed a benefit in 27 pts (84% in at least one parameter. 14 pts (43.7% improved or stabilised in all three parameters. The median ECM/BCM index was 1.7 [1.11-3.14] at start of APN and improved down to 1.5 [1.12-3.36] during therapy. The median BMI increased from 19.7 [14.4-25.9] to 20.5 [15.4-25.0]. The median phase angle improved by 10% from 3.6 [2.3-5.1] to 3.9 [2.2-5.1]. Conclusions We demonstrated the positive impact of APN on the assessed parameters, first of all the phase angle, and we observed at least a temporary benefit or stabilisation of the nutritional status in the majority of the investigated patients. Based on these findings we are currently investigating the impact of APN on survival in a larger patient cohort. Trial registration ClinicalTrials.gov Identifier: NCT00919659

Riess Hanno

2010-03-01

362

Exploration and development of the climate archive of the Allan Hills Blue Ice Area, Antarctica  

Science.gov (United States)

The ice flow, stable water isotopic composition, and glaciochemistry of ice within the Allan Hills Blue Ice Area (AH BIA), Antarctica, is investigated to determine its potential for contributing to and extending the currently available 800 ka ice core record of paleoclimate. The investigation began with a study of ice dynamics within the AH BIA. The horizontal (u ) and vertical (z) ice velocities, determined using high-precision GPS measurements, are 1.5 to 50 (+0.12) cm a--1 and 2-3 (+/-0.50) cm a--1, respectively. The significant positive z and low u verify that old ice is present at the surface. Surface topography, in combination with u, was used to delineate a flowline (A-B) along which ice of continuous age was collected for the next stage of the investigation. Surface ice was recovered along 5 km of A-B and a 225 meter core was drilled at its midpoint. Ice samples were analyzed for stable isotopes of water (deltaD, delta 18O), which are common proxies for temperature. The resulting profiles exhibit variability consistent with the magnitude of glacial-interglacial transitions in East Antarctica. These variations, in combination with 40Aratm, and delta18O atm constrain the age of sampled ice to 90-250 ka. However, the 100 meters of directly above bedrock was not collected and the bottom depth is calculated to be at least 400 ka. The final phase of the investigation involved determining the concentrations of terrestrial and marine chemical species in ice from multiple points along A-B. Concentrations ranged from pg L--1 level for rare earth elements to microg L --1 level for multi-sourced compounds like sulfate. The concentrations of all analytes were anti-correlated with stable water isotope values indicating they had preserved a record of changes in atmospheric circulation, source strength, and continental aridity. The composition of rare earth elements points to Australia as an important interglacial dust source, while molar ratios of major ions, particularly Ca2+:C1-- and Mg2+:C1--, suggest that transport pathways through the McMurdo Dry Valleys cannot be disregarded. In summary, the data collected suggest that ice within the AH BIA is stratigraphically conformable, is older than that recovered in surrounding regions and does contain a well-preserved environmental record.

Spaulding, Nicole E.

363

Bioelectrical impedance phase angle as a prognostic indicator in breast cancer  

Directory of Open Access Journals (Sweden)

Full Text Available Abstract Background Bioelectrical impedance analysis (BIA is an easy-to-use, non-invasive, and reproducible technique to evaluate changes in body composition and nutritional status. Phase angle, determined by bioelectrical impedance analysis (BIA, detects changes in tissue electrical properties and has been hypothesized to be a marker of malnutrition. Since malnutrition can be found in patients with breast cancer, we investigated the prognostic role of phase angle in breast cancer. Methods We evaluated a case series of 259 histologically confirmed breast cancer patients treated at Cancer Treatment Centers of America. Kaplan Meier method was used to calculate survival. Cox proportional hazard models were constructed to evaluate the prognostic effect of phase angle independent of stage at diagnosis and prior treatment history. Survival was calculated as the time interval between the date of first patient visit to the hospital and the date of death from any cause or date of last contact/last known to be alive. Results Of 259 patients, 81 were newly diagnosed at our hospital while 178 had received prior treatment elsewhere. 56 had stage I disease at diagnosis, 110 had stage II, 46 had stage III and 34 had stage IV. The median age at diagnosis was 49 years (range 25 – 74 years. The median phase angle score was 5.6 (range = 1.5 – 8.9. Patients with phase angle 5.6 had 49.9 months (95% CI: 35.6 to 77.8; n = 130; the difference being statistically significant (p = 0.031. Multivariate Cox modeling, after adjusting for stage at diagnosis and prior treatment history found that every one unit increase in phase angle score was associated with a relative risk of 0.82 (95% CI: 0.68 to 0.99, P = 0.041. Stage at diagnosis (p = 0.006 and prior treatment history (p = 0.001 were also predictive of survival independent of each other and phase angle. Conclusion This study demonstrates that BIA-derived phase angle is an independent prognostic indicator in patients with breast cancer. Nutritional interventions targeted at improving phase angle could potentially lead to an improved survival in patients with breast cancer.

Dahlk Sadie L

2008-08-01

364

Using global health initiatives to strengthen health systems: a civil society perspective.  

Science.gov (United States)

Research into the effects of global health initiatives (GHIs) on health systems has largely left out the viewpoints and contributions of civil society. This study details civil society's perspective regarding the effects of two GHIs, the US President's Emergency Plan for AIDS Relief (PEPFAR) and the Global Fund to Fight AIDS, Tuberculosis and Malaria (GFATM), on country health systems and the added value of civil society interacting with GHIs to strengthen health systems. The study employed qualitative data collection methods using semi-structured interviews administered during focus groups and key informant interviews. A range of health system stakeholders were interviewed in Kenya, Malawi, Uganda and Zambia. Data were coded and analysed for themes and sub-themes. In total, 2910 civil society participants provided information individually or in focus groups. Respondents reported that GHIs have contributed to dramatic health benefits within and outside of a disease-specific focus, including health systems strengthening efforts. However, opportunities for synergy between GHIs and health systems have been missed, and GHIs have not worked sufficiently to close capacity gaps of grassroots civil society organisations. Despite some governance innovations, civil society's opportunities to participate meaningfully in GHI priority setting efforts are limited. Recommendations are included on how to best use GHIs to strengthen health systems by partnering with civil society. PMID:21038166

Cohn, Jennifer; Russell, Asia; Baker, Brook; Kayongo, Alice; Wanjiku, Esther; Davis, Paul

2011-01-01

365

Potency of Polycyclic Aromatic Hydrocarbons (PAHs) for Induction of Ethoxyresorufin-O-deethylase (EROD) Activity in Hepatocyte Cultures from Chicken, Pekin Duck, And Greater Scaup.  

Science.gov (United States)

The potency of tetrachlorodibenzo-p-dioxin (TCDD) and 18 polycyclic aromatic hydrocarbons (PAHs) for induction of ethoxyresorufin-O-deethylase (EROD) activity was assessed in primary hepatocyte cultures prepared from chicken (Gallus domesticus), Pekin duck (Anas platyrhynchos domesticus), and greater scaup (Aythya marila). TCDD and 8 of the PAHs induced EROD activity in a concentration-dependent manner. Seven of these were previously shown to be acutely toxic to avian embryos, while the 10 congeners that did not produce an EROD response caused limited mortality. The rank order potency of the EROD-active congeners in all three species was as follows: TCDD > dibenz[ah]anthracene > benzo[k]fluoranthene > indeno[1,2,3-cd]pyrene > benzo[a]pyrene > chrysene ? benz[a]anthracene ? benz[ghi]perylene > benzo[b]naphtho[2,3-d]thiophene. Chicken hepatoctyes were more sensitive than duck hepatocytes to EROD induction by all test compounds, but the gap in species sensitivity was 100-fold for TCDD, and generally ?10-fold for PAHs. This study is the first to use in vitro methods to rank the AHR-mediated potency of PAHs in birds. These data may be useful for assessing risks associated with exposure to PAHs in the environment. PMID:25706091

Head, Jessica A; Jeffery, Richard W; Farmahin, Reza; Kennedy, Sean W

2015-03-17

366

PAH Clusters as Sources of Interstellar Infrared Emission  

Science.gov (United States)

Polycyclic aromatic hydrocarbons (or PAHs) have been the subject of astrochemical research for several decades as principal sources of the interstellar aromatic infrared emission bands. PAH clusters could possibly contribute to these emission bands, but a lack of data on their infrared properties has made this hypothesis difficult to evaluate. Here we investigate homogeneous neutral PAH clusters by measuring the mid-infrared absorption spectra of the five nonlinear PAH molecules phenanthrene, chrysene, pyrene, perylene, and benzo[ghi]perylene within solid argon ice at a fixed temperature of 5 K. We attribute observed spectral shifts in their principal absorption bands as a function of argon/PAH ratio to clustering of the PAH molecules within the argon matrix. These shifts are related to the cluster structures forming in the matrix and the topology of the monomer PAH molecule. We predict that interstellar PAH molecules that are relatively large (no fewer than 50 carbon atoms per molecule) and compact will have clusters that contribute to the asymmetrically red-shaded profile of the interstellar 11.2 ?m emission band.

Roser, J. E.; Ricca, A.

2015-03-01

367

Polycyclic aromatic hydrocarbons in post-fire soils of drained peatlands in western Meshchera (Moscow region, Russia)  

Science.gov (United States)

Polycyclic aromatic hydrocarbons (PAHs) are priority pollutants that arrive in the environment from numerous anthropogenic and natural sources, but the data on their natural sources including wildfires remain insufficient. The level of contamination and the composition of PAHs in soils of the areas affected by wildfires were studied in this work. The study was conducted in the Moscow region (Russia) in areas occupied by drained peatland and strongly damaged by fires in 2002, 2010 and 2012. The features of PAH accumulation and the profile distributions in histosols and histic podzols after the fires of different times were analyzed. It was shown that new soil horizons formed after the fires - Cpir, Hpir and incipient O horizons - and that these horizons differ in PAH accumulation rate. Maximal total concentrations of 14 PAHs were detected in charred peat horizons Hpir (up to 330 ng g-1) and in post-fire incipient O horizons (up to 180 ng g-1), but the high-molecular-weight PAHs (benz(ghi)perylene, benz(a)pyrene, benz(k)fluoranthene) were revealed only in charry peat horizons. The trends of higher PAH concentrations were found in cases when smoldering combustion resulted in rather thick residual peat horizons. In cases of almost complete pyrogenic destruction of He horizons, total PAH concentrations were no more than 50 ng g-1. Also, PAH accumulation in upper horizons of soils near the sites of the latest fires was observed.

Tsibart, A.; Gennadiev, A.; Koshovskii, T.; Watts, A.

2014-12-01

368

Polycyclic aromatic hydrocarbons in post-pyrogenic soils of drained peatlands in West Meshchera (Moscow Region, Russia)  

Science.gov (United States)

Polycyclic aromatic hydrocarbons (PAHs) are priority pollutants and they arrive to the environment from numerous anthropogenic and natural sources, but the data on their natural sources which include wildfires remains insufficient. The level of contamination and the composition of PAHs in soils of the areas affected by wildfires were studied in this work. The study was conducted in Moscow Region (Russia) on the territories occupied with drained peatland and strongly damaged by fires of 2002, 2010 and 2012. The features of PAHs accumulation and profile distribution in histosols and histic podzols after the fires of different time were analyzed. It was shown that new soil horizon form after the fires - Cpir, Hpir and incipient O horizons, and these horizons differ in PAHs accumulation rate. Maximal total concentrations of 14 PAHs were detected in charry peat horizons Hpir (up to 330 ng g-1) and in post-pyrogenic incipient O horizons (up to 180 ng g-1), but the high-molecular weight PAHs (benz(ghi)perylene, benz(a)pyrene, benz(k)fluoranthene) were revealed only in charry peat horizons. The trends to higher PAHs concentrations were found in cases of incomplete burning out of peat horizons while in cases of almost complete pyrogenic destruction of He horizons total PAHs concentration were no more than 50 ng g-1. Also the PAHs accumulation in upper horizons of soils near the sites of latest fires was observed.

Tsibart, A. S.; Gennadiev, A. N.; Koshovskii, T. S.

2014-05-01

369

Sediment-porewater partition of polycyclic aromatic hydrocarbons (PAHs) from Lanzhou Reach of Yellow River, China  

International Nuclear Information System (INIS)

Pollution of polycyclic aromatic hydrocarbons (PAHs) in the aquatic environment has drawn much attention around the world. The occurrence of 16 priority PAHs in the sediments and corresponding porewaters in Lanzhou Reach of Yellow River, China, and their partitioning behavior between the two phases were investigated. The results demonstrated that the total PAH levels in the sediments were positively correlated with the sediment clay contents (R2 = 0.756). Concentrations of total PAHs in porewaters ranged from 48.2 to 206 ?g/L, and indeno[1,2,3-cd]pyrene (InP) was the most abundant compound measured in the porewater samples with a mean value of 42.9 ?g/L. The compositions of PAHs in porewaters were dominated by their compositions in the sediment samples. The in situ organic carbon normalized partition coefficients (logKoc') of the PAHs between sediments and porewaters were significantly correlated with their octanol-water partition coefficients (log Kow) when log Kow values were less than 5.5 (naphthalene (Nap) excluded). logKoc' values of 14 PAHs were lower than those predicted by the Karickhoff relationship. This discrepancy was largest for InP, dibenzo[a,h]anthracene (DBA), and benzo[ghi]perylene (BgP). The results in present study showed the tendency of PAHs release from sediment to porewater, indicating that PAHs sequestered in the sediments may be a pollution source to aquatic ecosystee a pollution source to aquatic ecosystem.

370

The Seasonal and Interannual Variability of the Budgets of N2O and CCl3F  

Science.gov (United States)

The 6-year wind archives from the Goddard Institute for Space Studies/Global Climate-Middle Atmosphere Model (GISS/GCMAM) were in- put to the GISS/Harvard/Irvine Chemical Transport Model (G/H/I CTM) to study the seasonal and interannual variability of the budgets and distributions of nitrous oxide (N2O) and trichlorofluoromethane (CCl3F), with the corresponding chemical loss frequencies recycled and boundary conditions kept unchanged from year to year. The effects of ozone feedback and quasi-biennial oscillation (QBO) were not included. However, the role of circulation variation in driving the lifetime variability is investigated. It was found that the global loss rates of these tracers are related to the extratropical planetary wave activity, which drives the tropical upward mass flux. For N2O, a semiannual signal in the loss rate variation is associated with the interhemispheric asymmetry in the upper stratospheric wave activity. For CCl3F, the semiannual signal is weaker, associated with the comparatively uniform wave episodes in the lower stratosphere. The loss rates lag behind the wave activity by about 1-2 months. The interannual variation of the GCM generated winds drives the interannual variation of the annually averaged lifetime. The year-to-year variations of the annually averaged lifetimes can be about 3% for N2O and 4% for CCl3F.

Wong, Sun; Prather, Michael J.; Rind, David H.

1999-01-01

371

Gas chromatographic-mass spectrometric study of the oil fractions produced by microwave-assisted pyrolysis of different sewage sludges.  

Science.gov (United States)

The pyrolysis of sewage sludge was studied in a microwave oven using graphite as microwave absorber. The pyrolysis temperature ranged from 800 to 1000 degrees C depending on the type of sewage sludge. A conventional electrical furnace was also employed in order to compare the results obtained with both methods. The pyrolysis oils were trapped in a series of condensers and their characteristics such as elemental analysis and calorific value were determined and compared with those of the initial sludge. The oil composition was analyzed by GC-MS. The oils from the microwave oven had n-alkanes and 1-alkenes, aromatic compounds, ranging from benzene derivatives to polycyclic aromatic hydrocarbons (PAHs), nitrogenated compounds, long chain aliphatic carboxylic acids, ketones and esters and also monoterpenes and steroids. The oil from the electric oven was composed basically of PAHs such as naphthalene, acenapthylene, phenanthrene, fluoranthene, benzo[a]anthracene, benzofluoranthenes, benzopyrenes, indenepyrene, benzo[ghi]perylene, and anthanthrene. In contrast, these compounds were not produced in the case of microwave-assisted pyrolysis. PMID:14521315

Domínguez, A; Menéndez, J A; Inguanzo, M; Bernad, P L; Pis, J J

2003-09-19

372

Satellite-Based Solar Resource Data Sets for India 2002-2012  

Energy Technology Data Exchange (ETDEWEB)

A new 10-km hourly solar resource product was created for India. This product was created using satellite radiances from the Meteosat series of satellites. The product contains global horizontal irradiances (GHI) and direct normal irradiances (DNI) for the period from 2002 to 2011. An additional solar resource data set covering the period from January 2012 to June 2012 was created solely for validation because this period overlaps ground measurements that were made available from the Indian Ministry of New and Renewable Energy's (MNRE's) National Institute for Solar Energy for five stations that are part of MNRE's solar resource network. These measurements were quality checked using the SERI QC software and used to validate the satellite product. A comparison of the satellite product to the ground measurements for the five stations shows good agreement. This report also presents a comparison of the new version of solar resource data to the previous version, which covered the period from 2002 to 2008.

Sengupta, M.; Perez, R.; Gueymard, C.; Anderberg, M.; Gotseff, P.

2014-02-01

373

Preliminary measurement-based estimates of PAH emissions from oil sands tailings ponds  

Science.gov (United States)

Tailings ponds in the oil sands region (OSR) of western Canada are suspected sources of polycyclic aromatic hydrocarbons (PAHs) to the atmosphere. In the absence of detailed characterization or direct flux measurements, we present preliminary measurement-based estimates of the emissions of thirteen priority PAHs from the ponds. Using air concentrations measured under the Joint Canada-Alberta Oil Sands Monitoring Plan and water concentrations from a small sampling campaign in 2013, the total flux of 13 US EPA priority PAHs (fluorene to benzo[ghi]perylene) was estimated to be upward from water to air and to total 1069 kg y-1 for the region as a whole. By comparison, the most recent air emissions reported to Canada's National Pollutant Release Inventory (NPRI) from oil sands facilities totalled 231 kg y-1. Exchange fluxes for the three remaining priority PAHs (naphthalene, acenaphthylene and acenaphthene) could not be quantified but evidence suggests that they are also upward from water to air. These results indicate that tailings ponds may be an important PAH source to the atmosphere that is missing from current inventories in the OSR. Uncertainty and sensitivity analyses lend confidence to the estimated direction of air-water exchange being upward from water to air. However, more detailed characterization of ponds at other facilities and direct flux measurements are needed to confirm the quantitative results presented herein.

Galarneau, Elisabeth; Hollebone, Bruce P.; Yang, Zeyu; Schuster, Jasmin

2014-11-01

374

Application of radiocarbon analysis and receptor modeling to the source apportionment of PAHs (polycyclic aromatic hydrocarbons) in the atmosphere  

International Nuclear Information System (INIS)

The radiocarbon tracer technique was used to demonstrate that polycyclic aromatic hydrocarbons (PAHs) can be used for quantitative receptor modeling of air pollution. Fine-particle samples were collected during December, 1985, in Albuquerque, NM. Motor vehicles (fossil) and residential wood combustion (RWC, modern) were the major PAH-sources. For each sample, the PAH-fraction was solvent-extracted, isolated by liquid chromatography, and analyzed by GC-FID and GC-MS. The PAH-fractions from sixteen samples were analyzed for 14C by Accelerator Mass Spectrometry. Radiocarbon data were used to calculate the relative RWC contribution (fRWC) for samples analyzed for 14C. Normalized concentrations of a prospective motor vehicle tracer, benzo(ghi)perylene (BGP) had a strong, negative correlation with fRWC. Normalized BGP concentrations were used to apportion sources for samples not analyzed for 14C. Multiple Linear Regression (MLR) vs. ADCS and BGP was used to estimate source profiles for use in Target Factor Analysis (TFA). Profiles predicted by TFA were used in Chemical Mass Balances (CMBs). For non-volatile, stable PAHs, agreement between observed and predicted concentrations was excellent. The worst fits were observed for the most volatile PAHs and for coronene. The total RWC contributions predicted by CMBs correlated well with the radiocarbon data

375

Rapid, semimicro method for determination of polycyclic aromatic hydrocarbons in shellfish by automated gel permeation/liquid chromatography  

Energy Technology Data Exchange (ETDEWEB)

A simple, rapid, easily automated method is described for the determination of polycyclic aromatic hydrocarbons (PAHs) in shellfish such as American lobster (Homarus americanus) and blue mussel (Mytilus edulis). PAHs are extracted from small amounts (1-8 g) of tissue by saponification in 1N ethanolic potassium hydroxide followed by partitioning into 2,2,4-trimethylpentane. This solution is evaporated just to dryness by rotary evaporation and the residue is dissolved in cyclohexane-dichloromethane (1 + 1) for gel permeation chromatography (GPC) on Bio-Beads SX-3. The GPC procedure is ideal as a screening, method in the range 25-18,000 ng PAHs/g tissue. Measurements are required, the appropriate GPC fraction is collected and PAHs are separated by reverse phase liquid chromatography (LC) with fluorometric detection. Individual PAHs at concentrations as low as 0.25-10 ng/g can be determined. Recoveries of added fluoranthene, pyrene, benz(a)anthracene, chrysene, benzo(e)pyrene, benzo(b)fluoranthene, benzo(k)fluoranthene, benzo(a)pyrene, dibenz(a,h)anthracene, benzo(ghi)perylene, and indeno(1,2,3-cd)pyrene were quantitative, with relative standard deviations ranging from 0.0 to 16.9%.

376

PROPUESTA METODOLÓGICA PARA LA VALORACIÓN DEL PATRIMONIO GEOLÓGICO, COMO BASE PARA SU GESTIÓN EN EL DEPARTAMENTO DE ANTIOQUIA - COLOMBIA / METHODOLOGICAL PROPOSAL FOR CONSIDERING GEOLOGICAL HERITAGE AS A BASIS FOR ITS MANAGEMENT IN THE DEPARTMENT OF ANTIOQUIA - COLOMBIA  

Scientific Electronic Library Online (English)

Full Text Available SciELO Colombia | Language: Spanish Abstract in spanish Esta comunicación presenta una propuesta metodológica para la valoración del patrimonio geológico en el Departamento de Antioquia, región localizada en el Noroccidente de Colombia, caracterizada por una gran geodiversidad. Esta propuesta metodológica propone una expresión empírica denominada Índice [...] de Patrimonio Geológico (IPG), conformada por una suma aritmética de los siguientes parámetros con pesos diferentes: Valor científico (0.4), Valor Didáctico (0.2), Diversidad (0.2), Valor Estético (0.1) y Edad Geológica (0.1). Se proponen además, tres rangos de IPG para la clasificación del patrimonio geológico: IPG >4.0 (Patrimonio geológico con uso restringido), 4≥ IPG ≥2 (Patrimonio geológico para usos múltiples) e IPG Abstract in english This paper presents a methodology for the assessment of geological heritage in the Department of Antioquia, located in the northwest region of Colombia, characterized by great geodiversity. This methodological proposal proposes an empirical expression called Geological Heritage Index (GHI), formed b [...] y the arithmetic sum of the following parameters with different weights: Scientific value (0.4), educational value (0.2), Diversity (0.2), aesthetic value (0.1) and Age Geology (0.1). Are proposed three IPG ranges for classification of geological heritage: IPG> 4.0 (restricted use Geological heritage), 4 ≥ IPG ≥ 2 (multipurpose Geological heritage) and IPG

ALBEIRO DE JESÚS, RENDÓN RIVERA; ANGELA MARÍA, HENAO ARROYAVE; JUAN GUILLERMO, OSORIO CACHAYA.

2013-06-01

377

Contamination and correlation with toxicity of sediment samples from the Skagerrak and Kattegat  

Science.gov (United States)

The pollution state in the Skagerrak and Kattegat was investigated by determination of pollutant concentrations and toxicity of sediment samples from 11 stations in the area. A comparison was made with the sediment from a reference site near the Faroe Islands. Polycyclic aromatic hydrocarbons (PAH) and organochlorines were determined in whole sediment and heavy metals and ammonia were analysed in filtered pore water. Toxicity was bioassayed in whole sediment with Nitocra spinipes and Daphnia magna, in pore water with Mytilus edulis larvae and in solvent extracts from sediment with tests measuring etoxyresorufin-O-deethylase (EROD) activity in Oncorhyncus mykiss and rate of denitrification. Sites close to Göteborg and in an area from the Oslo fjord to the Norwegian Trench were most polluted. Sediment from the Faroe Islands was least polluted and also least toxic. Multivariate statistical analysis indicates that the different tests were sensitive to different kinds of pollutants. Effects on mussel larvae correlated strongest with the occurrence of ammonia, manganese, cadmium and PAHs, Nitocra with ?-hexachlorocyclohexane (HCH) and p,p'-DDD, Daphnia with arsenic and ?-HCH, fish EROD activity with benzo[ghi]perylene and unknown compounds associated with organic carbon, and denitrification with chlordanes, dieldrin and a few PAHs. The results indicate that sampling sites close to Göteborg are so polluted that harmful effects on the ecosystem probably occur.

Magnusson, K.; Ekelund, R.; Dave, G.; Granmo, Å.; Förlin, L.; Wennberg, L.; Samuelsson, M.-O.; Berggren, M.; Brorström-Lundén, E.

1996-02-01

378

Source identification and size distribution of atmospheric polycyclic aromatic hydrocarbons during rice straw burning period  

Science.gov (United States)

Atmospheric particulate and polycyclic aromatic hydrocarbon (PAH) size distributions were measured at a suburban area in central Taiwan during the rice straw burning and non-burning periods. Samples were acquired using a semi-volatile sampling train (PS-1 sampler) and a micro-orifice uniform deposit impactor (MOUDI). The collected materials were extracted and then analyzed by gas chromatograph/mass selective detector for 21 PAHs. The average total PAH concentrations of particulate and gaseous phases were 33.0 and 1160 ng m -3, respectively, in the rice straw burning period, which were higher than those on the non-burning days. Potential sources of PAHs were identified using the characteristic ratios. Benzo[ a]pyrene/benzo[ ghi]perylene ratio indicates the burning of rice straw is a significant source for PAH contribution at the sampling area. It also suggests that the rice straw burning primarily contribute fine particulate PAHs. Bimodal size distributions are obtained with a predominance of total PAHs in the accumulation mode during rice straw burning periods and in ultra-fine mode during non-burning periods. The particulate and particulate phase PAHs from rice straw burning are coarser than those from vehicle exhaust. The results also suggest that the amounts of PAHs per unit mass of particulate are less for the burning of rice straw than those of vehicle emissions.

Yang, Hsi-Hsien; Tsai, Cheng-Hsien; Chao, Mu-Rong; Su, Yi-Ling; Chien, Shu-Mei

379

Growth hormone upregulates intestinal trefoil factor expression in the ileum of rats after ?-radiation.  

Science.gov (United States)

Growth hormone (GH) and intestinal trefoil factor (ITF) have been involved in intestinal protection and repair. This study investigates the effects of GH administration on ITF expression and histological changes associated with tissue injury in an intestinal rat model of radiation. Adult male rats were divided into four groups: control, GH, radiation and radiation + GH (GHyRAD). Ileum samples were obtained at 2 or 72 h after radiation and processed to determine ITF levels (mRNA and protein) by quantitative polymerase chain reaction, Western blot and immunohistochemistry. In addition, goblet ITF-positive cells were identified by immunohistochemistry at 72 h. Our results showed an upregulation of mRNA and protein production of ITF in ileum samples after GH and radiation + GH compared with control and irradiated samples. Irradiation alone affected ITF protein expression. However, irradiation after GH pretreatment produced the highest ITF mRNA and protein levels at both the tested time points. ITF-producing goblet cells were identified in intestinal villi (apical location). GH treatment increased the number of ITF-producing goblet cells, and radiation after GH treatment displayed further increase in the number of ITF-positive goblet cells. GH upregulates ITF in normal intestinal tissue. This upregulation is higher when radiation is given after GH treatment. Nevertheless, the mechanism by which GH regulates ITF expression remains unclear and is still under investigation. These results could open up new avenues in the therapeutic reparative and protective effects of GH during radiotherapy and chemotherapy. PMID:21321317

Posadas, Sinforiano J; Largo, Carlota; Merino, Jose J; Elvira, Marcos; Gonzalez, Gonzalo; Caz, Victor; Caballero, Isabel; De Miguel, Enrique

2011-02-01

380

Null Surfaces: Counter-term for the Action Principle and the Characterization of the Gravitational Degrees of Freedom  

CERN Document Server

Constructing a well-posed variational principle and characterizing the appropriate degrees of freedom that need to be fixed at the boundary are non-trivial issues in general relativity. For spacelike and timelike boundaries, one knows that (i) the addition of a counter-term [like the Gibbons-Hawking-York (GHY) counter-term] will make the variational principle well-defined and (ii) the degrees of freedom to be fixed on the boundary are contained in the induced 3-metric. These results, however, do not directly generalize to null boundaries on which the 3-metric becomes degenerate. In this work, we address the following questions: (i) What is the counter-term that needs to be added on a null boundary to make the variational principle well-defined? (ii) How do we characterize the degrees of freedom which need to be fixed at the boundary? We show that the counter-term to be added is $2 \\sqrt{q} \\left( \\Theta+\\kappa \\right)$ and that the degrees of freedom to be fixed on the surface are in the induced 2-metric on a...

Parattu, Krishnamohan; Majhi, Bibhas Ranjan; Padmanabhan, T

2015-01-01

381

Comparative in vitro effects of 2,3,7,8-tetrachlorodibenzo-p-dioxin and selected polynuclear aromatic hydrocarbons on cyp1a1 gene transcription in cells which contain or are deficient in the 4S binding protein  

International Nuclear Information System (INIS)

Using [3H]-benzo[a]pyrene as the radioligand, several cell culture lines have been screened for the presence (or absence) of the 4S binding protein. Murine Hepa 1c1c7 cells contained both the 4S binding protein and the 9S (Ah) receptor whereas only the 9S receptor was detected in rat hepatoma H-4-II E cells in culture. The effects of a series of polynuclear aromatic hydrocarbons (PAHs) which included benzo[e]pyrene, benzo[ghi]perylene and 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and their interactive effects on CYP1A1 gene transcription was determined by Northern analysis in both cell lines. The results showed that the PAHs which exhibited high affinity for the 4S binding protein were inactive as inducers in both cell lines; TCDD was active in both cell lines and the interactive effects between the PAHs and TCDD did not significantly modulate TCDD-mediated CYP1A1 gene transcription. The results suggest that the 4S binding protein does not regulate CYP1A1 gene transcription

382

Removal of gaseous polycyclic aromatic hydrocarbons from cooking fumes using an atmospheric plasma reactor.  

Science.gov (United States)

Plasma technology is becoming increasingly important for treating various environmental pollutants. Treatment of polycyclic aromatic hydrocarbons (PAHs), such as those emitted from electric ovens while roasting pork, using an atmospheric plasma reactor has seldom been studied. This study investigated the characteristics of five PAH species (acenaphthalene (AcPy), acenaphthene (Acp), anthracene (Ant), benzo[a]anthracene (BaA), and benzo(ghi)perylene (BghiP)) in fumes emitted while roasting pork. The removal efficiency at different plasma output powers (0.112, 0.138, and 0.156 kJ/m(3)) of the reactor was also investigated. In the experiments, cooking fumes were generated by a small electrical oven, with pork being roasted at 200 °C. After a steady state was reached, samples were collected at the inlet and outlet of the atmospheric plasma reactor. The PAHs were analyzed using gas chromatography-mass spectrophotometry. The experimental results indicated that the removal efficiency for each PAH was highest with the highest plasma reactor output power. This was also true of the total PAH concentration, but the total toxic equivalence, BaP(eq), was lowest at the medium power output. This demonstrates that the total toxicity and the removal of PAHs were not directly proportional, and careful consideration must be made by engineers when setting the treatment conditions. PMID:21961504

Chang, Hung C; Mi, Hsiao H; Lin, Yuan C; Hsieh, Lien T; Chao, How R

2011-01-01

383

Substrate-dependent modulation of the enzymatic catalytic activity: reduction of nitrate, chlorate and perchlorate by respiratory nitrate reductase from Marinobacter hydrocarbonoclasticus 617.  

Science.gov (United States)

The respiratory nitrate reductase complex (NarGHI) from Marinobacter hydrocarbonoclasticus 617 (Mh, formerly Pseudomonas nautica 617) catalyzes the reduction of nitrate to nitrite. This reaction is the first step of the denitrification pathway and is coupled to the quinone pool oxidation and proton translocation to the periplasm, which generates the proton motive force needed for ATP synthesis. The Mh NarGH water-soluble heterodimer has been purified and the kinetic and redox properties have been studied through in-solution enzyme kinetics, protein film voltammetry and spectropotentiometric redox titration. The kinetic parameters of Mh NarGH toward substrates and inhibitors are consistent with those reported for other respiratory nitrate reductases. Protein film voltammetry showed that at least two catalytically distinct forms of the enzyme, which depend on the applied potential, are responsible for substrate reduction. These two forms are affected differentially by the oxidizing substrate, as well as by pH and inhibitors. A new model for the potential dependence of the catalytic efficiency of Nars is proposed. PMID:22561116

Marangon, Jacopo; Paes de Sousa, Patrícia M; Moura, Isabel; Brondino, Carlos D; Moura, José J G; González, Pablo J

2012-07-01

384

/ Electrobioremediation of an unsaturated soil contaminated with hydrocarbon after landfarming treatment  

Scientific Electronic Library Online (English)

Full Text Available SciELO Portugal | Language: Spanish Abstract in spanish [...] Abstract in english The electro-bioremediation is a technique that is used for the remediation of hydrocarbon contaminated soils. The aim of this study is to explore the electro-bioremediation of an unsaturated soil, contaminated with hydrocarbon waste generated by the oil industry activity in the area and previously r [...] emediated by landfarming, to in order to increase the removal of polyaromatic hydrocarbons. The sample was put in a three-compartment electro-bioremediation glass cell of 58 cm long, the lateral compartments containing the electrolyte; we used bridges of ammonium phosphate to connect the electrolyte with the soil sample in the central compartment. A potential difference of 0.5 V cm-1 was applied to the electro-bioremediation cells for 60 days. A second cell was used for control and no current was applied to it. The monitoring was carried out by a counting cell and measuring of n-alkanes and polyaromatic hydrocarbons using GC mass. The results showed that this technology has good potential to increase the biodegradation of n-alkane hydrocarbons and polyaromatic hydrocarbons such as phenanthrene, 1-3-metilphenanthrene, chrysene, 3-methylchrysene, 6-methylchrysene, benzo(b)fluoranthrene and benzo(ghi)pyrene which, without the application of direct current, were not biodegraded by microorganisms in the soil. The use of salt bridges maintained the pH between values that are compatible with the degrading bacterial community.

A.J., Acuña; N., Tonin; G.N., Pucci; L., Wick; O.H., Pucci.

385

[Assessment of resistance to permethrin of german cockroaches (Blattella germanica L.) caught in Poland].  

Science.gov (United States)

Resistance to permethrin was tested in cockroaches caught in health service institutions in various parts of Poland. The tests were carried out by the contact method as recommended by the WHO. The density of the insecticide was 20 mg/m2. The experiment was done only on male insects, calculating the values of LT50 and LT90 in insect groups caught in various localities. These values were compared with LT50 and LT90 values in sensitive insects exposed to the insecticide, and the resistance indices R50 and R90 were calculated. This made possible determination of permethrin resistance of the populations from various areas. The results showed that the sensitivity of the insects varied. Cockroaches caught in Opole, Bia?a Podlaska, Szczecin, Warsaw were highly resistant to permethrin, while those from P?ock, Piotrków Trybunalski, Chojnów, Nowy Sacz tolerated the insecticide, and those from Jedrzejów were as sensitive as control laboratory insects. PMID:7878339

Krzemi?ska, A; Gliniewicz, A; Styczy?ska, B

1994-01-01

386

Impact of Atmospheric Chromatic Effects on Weak Lensing Measurements  

CERN Document Server

Current and future imaging surveys will measure cosmic shear with statistical precision that demands a deeper understanding of potential systematic biases in galaxy shape measurements than has been achieved to date. We use analytic and computational techniques to study the impact on shape measurements of two atmospheric chromatic effects for ground-based surveys such as the Dark Energy Survey (DES) and the Large Synoptic Survey Telescope (LSST): (i) atmospheric differential chromatic refraction (DCR) and (ii) wavelength dependence of seeing. We investigate the effects of using the point spread function (PSF) measured with stars to determine the shape of a galaxy that has a different spectral energy distribution (SED) than the stars. For (i), we extend a study by Plazas & Bernstein based on analytic calculations that show that DCR leads to significant biases in galaxy shape measurements for future surveys, if not corrected. For (ii), we find that the wavelength dependence of seeing leads to significant bia...

Meyers, Joshua E

2014-01-01

387

Lower Yakima Valley Wetlands and Riparian Restoration Project. Final Environmental Assessment.  

Energy Technology Data Exchange (ETDEWEB)

Bonneville Power Administration (BPA) proposes to fund that portion of the Washington Wildlife Mitigation Agreement pertaining to the Lower Yakima Valley Wetlands and Riparian Restoration Project (Project) in a cooperative effort with the Yakama Indian Nation and the Bureau of Indian Affairs (BIA). The proposed action would allow the sponsors to secure property and conduct wildlife management activities for the Project within the boundaries of the Yakama Indian Reservation. This Environmental Assessment examines the potential environmental effects of acquiring and managing property for wildlife and wildlife habitat within a large 20, 340 hectare (50, 308 acre) project area. As individual properties are secured for the Project, three site-specific activities (habitat enhancement, operation and maintenance, and monitoring and evaluation) may be subject to further site-specific environmental review. All required Federal/Tribal coordination, permits and/or approvals would be obtained prior to ground disturbing activities.

United States. Bonneville Power Administration

1994-10-01

388

Enhanced network reconstruction from irreducible local information  

CERN Document Server

Network topology plays a key role in many phenomena, from the spreading of diseases to that of financial crises. Whenever the whole structure of a network is unknown, one must resort to reconstruction methods that identify the least biased ensemble of networks consistent with the partial information available. A challenging case is when there is only local (node-specific) information available. For binary networks, the relevant ensemble is one where the degree (number of links) of each node is constrained to its observed value. However, for weighted networks the problem is much more complicated. While the naive approach prescribes to constrain the strengths (total link weights) of all nodes, recent counter-intuitive results suggest that in weighted networks the degrees are often more informative than the strengths, and as `fundamental' as the latter. This implies that the reconstruction of weighted networks would be significantly enhanced by the specification of both quantities, a computationally hard and bia...

Mastrandrea, Rossana; Fagiolo, Giorgio; Garlaschelli, Diego

2013-01-01

389

Homofobia en estudiantes de trabajo social  

Directory of Open Access Journals (Sweden)

Full Text Available La homofobia es una actitud negativa ante personas homosexuales. Varios estudios infor - man altos niveles de homofobia en estudiantes universitarios. Estimar el nivel de homofo - bia en estudiantes de trabajo social. Se llevó a cabo una revisión sistemática de las inves - tigaciones formales disponibles en Ebsco, Imbiomed, Lilacs, MedLine, Ovid y ProQuest. Se incluyeron artículos publicados en español, inglés o portugués entre 1999 y 2010. Las palabras clave para la búsqueda fueron “homophobia”, “homosexuality”, “students” y “social work”. Se realizó un análisis descriptivo de los hallazgos. Un grupo de tres artícu - los se incluyeron en esta revisión. Entre el 6,5 y 77,4% de los estudiantes de trabajo social mostraron altos niveles de homofobia. Al menos uno de cada quince estudiantes de trabajo social informan altos niveles homofobia. En estudiantes colombianos de trabajo social es necesario investigar la presencia de homofobia.

Adalberto Campo-Arias

2013-01-01

390

Synthesis and characterization of bisimide amines and bisimide amine-cured epoxy resins  

Science.gov (United States)

An attempt is made to develop tough, moisture resistant, high char yield epoxy resins by means of novel bisimide amine (BIA) hardener curing agents and a state-of-the-art epoxy resin system. The BIAs are isolated as mixtures containing monomer, oligomer, and polymeric species, and then characterized by elemental analysis and high pressure liquid chromatography. The bisimide amine-cured epoxies (IMEs) were characterized with respect to moisture absorption, thermal properties, and physical and mechanical properties, as well as in the role of matrices in Celion 6000/IME composites. The relative toughness characteristics of each IME formulation was measured by the 10 deg off-axis tensile test, measuring the uniaxial tensile strength, shear strength, and shear-strain-to-failure of the composite systems.

Scola, D. A.

1983-01-01

391

Bisimide amine cured epoxy /IME/ resins and composites. II - Ten-degree off-axis tensile and shear properties of Celion 6000/IME composites  

Science.gov (United States)

Bisimide amines (BIAs), which are presently used as curing agents in a state-of-the-art epoxy resin, are oligomeric and polymeric mixtures. A series of composites consisting of the novel BIA-cured epoxy resin reinforced with Celion 6000 graphite fibers were fabricated and evaluated, and the ten-degree, off-axis uniaxial tensile and shear properties of these composites were determined. The use of the intralaminar shear strain-to-failure was used in the calculation of resin shear strain-to-failure. Study results indicate that several of these novel composite systems exhibit shear strain properties that are superior to those of the control composite system of the present experiments, which employed a sulfone curing agent.

Scola, D. A.

1982-01-01

392

"Parquesoft": a study of social entrepreneurship in software industry cluster in cali, Colombia  

Directory of Open Access Journals (Sweden)

Full Text Available El cambio institucional ocurrido en los últimos años en los países en desarrollo como Colombia soporta y legitimiza actividades productivas e innovativas. Pero esta dinámica reciente ha sido igno rada; por el contrario la literatura en ciencias sociales se ha concentrado en el estudio de las actividades destructivas y criminales. El problema de estudio es entender cómo en países como Colom bia, el desarrollo de sectores industriales formales como el software se basa en las redes informales existentes, las cuales emergen como una respuesta a las sociedades exclusivistas pre-industriales. En particular entender cómo el ?Efecto Tunel?, término introducido por Albert Hirschman en los 70?s, emerge como una organización alternativa para coordinar recursos productivos en sociedades inequitativas. El estudio de caso es sobre Parquesoft, un ejemplo de esta nueva industria formal en Colombia basada en un grupo diferente de valores y objetivos que marcan la diferencia en la manera de hacer negocios y pensar el desarrollo.

Iv\\u00E1n Hern\\u00E1ndez

2006-01-01

393

Lanthanide(III and Yttrium(III Complexes of Benzimidazole-2-Acetic Acid: Synthesis, Characterisation and Effect of La(III Complex on Germination of Wheat  

Directory of Open Access Journals (Sweden)

Full Text Available The synthesis and characterisation of lanthanide(III and yttrium(III nitrate complexes of benzimidazole-2-acetic acid (HBIA are reported. The complexes have been characterised by elemental analysis, molar conductance, magnetic studies, IR, 1H NMR, UV-visible, EPR, and TG/DTA studies. They have the stoichiometry [Ln3(BIA2(NO37(H2O4]⋅3H2O where Ln=La(III, Pr(III, Nd(II, Sm(III, Eu(III, Gd(III, Tb(III, Dy(III, and Y(III. The effect of La(III complex on germination, coleoptile, and root length of two local varieties of wheat DWR-195 and GW-349 for different treatment periods has been investigated. The complex was found to exhibit enhanced activity, compared to HBIA or metal salt alone at lower treatment periods.

H. Lohithaswa

2006-03-01

394

Planetesimal formation by sweep-up: How the bouncing barrier can be beneficial to growth  

CERN Document Server

The formation of planetesimals is often accredited to collisional sticking of dust grains. The exact process is unknown, as collisions between larger aggregates tend to lead to fragmentation or bouncing rather than sticking. Recent laboratory experiments have however made great progress in the understanding and mapping of the complex physics involved in dust collisions. We want to study the possibility of planetesimal formation using the results from the latest laboratory experiments, particularly by including the fragmentation with mass transfer effect, which might lead to growth even at high impact velocities. We present a new experimentally and physically motivated dust collision model capable of predicting the outcome of a collision between two particles of arbitrary masses and velocities. It is used together with a continuum dust-size evolution code that is both fast in terms of execution time and able to resolve the dust well at all sizes, allowing for all types of interactions to be studied without bia...

Windmark, Fredrik; Güttler, Carsten; Blum, Jürgen; Dullemond, Cornelis P; Henning, Thomas

2012-01-01

395

The Effects of Banking Regulation on Asset Quality: A Panel Analysis  

Directory of Open Access Journals (Sweden)

Full Text Available This paper attempts to investigate the effects of banking regulation on asset quality. This has been conducted using a sample of 14 countries from 1 Middle East & Africa, 2 Europe & Central Asia, 3 Latin America & Caribbean and 4 East Asia & Pacific, over the period from 2006 to 2012. Asset quality is measured by “bank nonperforming loans to gross loans” according to The World Bank database regarding World Development Indicators, while banking regulation is measured by the “response to Basel implementation” according to FSI survey of July 2013. Results indicate that implementation of SA “Standardized Approach” and Conserv “Capital conservation buffer” may affect “asset quality” for low-asset quality countries (Middle East & Africa and Europe & Central Asia groups, while implementation of BIA “Basic indicator approach “ and P2 “Pillar2” may affect “asset quality” for high-asset quality ones (Latin America & Caribbean and East Asia & Pacific groups.

Nader Alber

2014-06-01

396