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Sample records for aggressive vascular anomalies

  1. Imaging evaluation of fetal vascular anomalies

    International Nuclear Information System (INIS)

    Vascular anomalies can be detected in utero and should be considered in the setting of solid, mixed or cystic lesions in the fetus. Evaluation of the gray-scale and color Doppler US and MRI characteristics can guide diagnosis. We present a case-based pictorial essay to illustrate the prenatal imaging characteristics in 11 pregnancies with vascular malformations (5 lymphatic malformations, 2 Klippel-Trenaunay syndrome, 1 venous-lymphatic malformation, 1 Parkes-Weber syndrome) and vascular tumors (1 congenital hemangioma, 1 kaposiform hemangioendothelioma). Concordance between prenatal and postnatal diagnoses is analyzed, with further discussion regarding potential pitfalls in identification. (orig.)

  2. Imaging evaluation of fetal vascular anomalies

    Energy Technology Data Exchange (ETDEWEB)

    Calvo-Garcia, Maria A.; Kline-Fath, Beth M.; Koch, Bernadette L.; Laor, Tal [MLC 5031 Cincinnati Children' s Hospital Medical Center, Department of Radiology, Cincinnati, OH (United States); Adams, Denise M. [Cincinnati Children' s Hospital Medical Center, Department of Pediatrics and Hemangioma and Vascular Malformation Center, Cincinnati, OH (United States); Gupta, Anita [Cincinnati Children' s Hospital Medical Center, Department of Pathology, Cincinnati, OH (United States); Lim, Foong-Yen [Cincinnati Children' s Hospital Medical Center, Pediatric Surgery and Fetal Center of Cincinnati, Cincinnati, OH (United States)

    2015-08-15

    Vascular anomalies can be detected in utero and should be considered in the setting of solid, mixed or cystic lesions in the fetus. Evaluation of the gray-scale and color Doppler US and MRI characteristics can guide diagnosis. We present a case-based pictorial essay to illustrate the prenatal imaging characteristics in 11 pregnancies with vascular malformations (5 lymphatic malformations, 2 Klippel-Trenaunay syndrome, 1 venous-lymphatic malformation, 1 Parkes-Weber syndrome) and vascular tumors (1 congenital hemangioma, 1 kaposiform hemangioendothelioma). Concordance between prenatal and postnatal diagnoses is analyzed, with further discussion regarding potential pitfalls in identification. (orig.)

  3. Orthopedic issues in vascular anomalies.

    Science.gov (United States)

    Spencer, Samantha A; Sorger, Joel

    2014-08-01

    Vascular malformations impact the musculoskeletal system depending on the tissue involved (skin, subcutis, muscle, cartilage, or bone), the extent of involvement, and the type of anomalous vessels (arteries, capillaries, veins, or lymphatics). These malformations can cause a multitude of musculoskeletal problems for the patient and their Orthopedic Surgeon to manage. Leg-length discrepancy, intra-articular involvement, muscular lesions, and primary or secondary scoliosis are just to name a few. All of these problems can cause pain, deformity, and a range of functional limitations. Surgical and nonsurgical treatment plans both have a role in the care of these patients. Patients with vascular malformations may also suffer from life-threatening cardiovascular and hematologic abnormalities. For those patients who undergo surgery, thromboembolic risk is elevated, wound breakdown and infection are much more common, and bleeding risk continues well into the postoperative course. Because of the complex nature of these disorders, the clinician must have a full understanding of the types of lesions, their natural history, appropriate diagnostic studies, associated medical problems, indications for treatment, and all the treatment options. For severe malformations, especially syndromes such as CLOVES and Klippel-Trenaunay syndrome, interdisciplinary team management is essential for the best outcomes. PMID:25241103

  4. Vascular anomalies of the upper limb

    Directory of Open Access Journals (Sweden)

    G Balakrishnan

    2011-01-01

    Full Text Available Vascular anomalies of the upper extremity are a surgical challenge to the hand surgeons. The treatment modality varies with respect to the presentation, extent of the lesion, progression and their complications. Based on our experience in treating patients with vascular malformations, a protocol has been formulated for their management, which we have found to be very useful and successful. With the use of the tumescent technique and good planning, haemangiomas are best excised in infancy or early childhood. Investigations like contrast computed tomography and magnetic resonance imaging have been found to be a useful tool in the diagnosis and planning of surgery for venous malformations. Embolisation seems to be a safe option in arteriovenous malformations.

  5. Vascular gastric anomalies as a cause of relapsing bleeding

    Directory of Open Access Journals (Sweden)

    Golubović Gradimir

    2008-01-01

    Full Text Available Background. Although relatively rare, gastric vascular anomalies can be recognized as a source of both chronic and acute blood loss, most often presenting as long term iron deficiency anemia, rarely as severe acute gastrointestinal bleeding. Case report. We present five patients with various gastric vascular anomalies, diagnosed during the year of 2003. in the Clinical Hospital Center Zemun. The diagnosis was based on endoscopic appearances, clinical history and characteristic histological findings. Gastric vascular anomalies presented in our review were: portal hypertensive gastropathy, gastric antral vascular ectasia, angiodysplasia, hereditary hemorrhagic telangiectasia and Dieulafoy lesion. The used treatment modalities included surgery and various endoscopic techniques (schlerotherapy, argon plasma coagulation. Conclusion. Patients presented with chronic iron deficiency anemia or acute and recurrent gastrointestinal hemorrhage should be considered as having one of gastric vascular anomalies.

  6. Solitary mesenteric vascular anomaly presenting as acute abdomen

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    Thambidorai C

    2008-01-01

    Full Text Available A 4-year-old girl with a solitary vascular anomaly of the mesentery presented with acute lower abdominal pain. Despite the use of ultrasound, computed tomography scan and image-guided core biopsies, the lesion was initially mistaken for an inflammatory intra-abdominal mass. The correct diagnosis was made at laparotomy. Solitary vascular anomaly of the mesentery is rare and its presentation as an acute abdomen has not been reported before.

  7. Congenital vascular anomalies: current perspectives on diagnosis, classification, and management

    Directory of Open Access Journals (Sweden)

    Blei F

    2016-07-01

    Full Text Available Francine Blei,1 Mark E Bittman2 1Vascular Anomalies Program, Lenox Hill Hospital, Northwell Health, 2Department of Radiology, New York University Langone Medical Center, New York, NY, USA Abstract: The term "congenital vascular anomalies" encompasses those vascular lesions present at birth. Many of these lesions may be detected in utero. This review serves to apprise the readership of newly identified diagnoses and updated classification schemes. Attention is focused on clinical features, patterns of presentation, clinical manifestations and behavior, diagnostic tools, and treatment modalities. It is an invigorating period for this field, with a surge in vascular anomalies-related basic and clinical research, genetics, pharmacology, clinical trials, and patient advocacy. A large number of professional conferences now include vascular anomalies in the agenda, and trainees in multiple specialties are gaining expertise in this discipline. We begin with a summary of classification schemes and introduce the updated classification adopted by the International Society for the Study of Vascular Anomalies. Disease entities are described, with liberal use of photographs, as many diagnoses can be established based on a thorough history and visual appearance and it is thus essential to develop a familiarity with diagnosis-specific physical features. Peripheral (non-central nervous system vascular anomalies are the focus of this review. We focus on those entities in which diagnostic radiology is routinely used and accentuate when histologic confirmation is essential. We also underscore some differences in approach to the pediatric vs adolescent or adult patient. A list of Internet-based resources is included, with hyperlinks to informative sites. References are limited to seminal discoveries and review articles. We hope that our enthusiasm in writing this review will be shared by those who read this review. Keywords: vascular anomalies, hemangiomas, vascular

  8. PHACE Syndrome: Persistent Fetal Vascular Anomalies: A Case Report

    OpenAIRE

    Prochazka, V.; Hrbac, T.; Chmelova, J.; Skoloudik, D.; Prochazka, M

    2005-01-01

    PHACE(S) syndrome is an acronym for neurocutaneous disease encompassing the expression of (P) posterior cranial fossa malformations, (H) facial haemangiomas, (A) arterial anomalies, (C) aortic coarctaion and other cardiac defects, (E) eye abnormalities and (S) for sternal malformation or stenotic arterial diseases. We report on a case of PHACE syndrome complete expression with persistent fetal vascular anomalies unusually in a 55-year-old women with large bilateral facial and neck haemangioma...

  9. Surgical treatment of hand vascular anomalies: A case report

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    Kozarski Jefta

    2014-01-01

    Full Text Available Background. Vascular anomalies in the hand do not occur frequently. Their presence in the metacarpal region can cause different functional disorders. The extent of such disorders directly depends on the localization and size of vascular anomalies, duration and the nature of the anomaly growth as well as on eventual secondary complications such as ulceration or bleeding. The aim of this case report was to show the specifics in the clinical picture, pathogenesis and evolution of such anomalies, applied diagnostic procedures (radiography, ultrasound, magnetic resonance, electromyography and surgical treatment as well as postoperative functional results. Case report. In the Clinic for Plastic Surgery and Burns, Military Medical Academy Belgrade, two patients were treated surgically for vascular anomalies of the middle palmar region of the hand. The first patient, a 36-year-old male, a former active sportsman (professional handball player was treated for acute increase in the vascular anomaly of hand in the metacarpal region and proximal phalange of III and IV fingers of his right hand. The anomaly was detected 6 months prior to his hospitalization while two weeks before the hospitalization there was a sudden growth and increase in the change. The second case, a 15-year-old male patient actively pursuing a career in professional basketball was treated for a tumor localized in the metacarpal zone of his left hand. According to the information provided by his parents, the anomaly had been present since his birth. Initially, the anomaly manifested itself as a discoloration of the skin with a marked capillary drawing, gradually increasing throughout the last five years to the present dimension. The growth of the malformation was noticed to coincide in both patients with more active pursuit of their professional sports career. Conclusion. The clinical picture of hand vascular anomalies is dominated by the symptoms of compression of neurovascular

  10. Surgical treatment for vascular anomalies and tracheoesophageal compression

    Institute of Scientific and Technical Information of China (English)

    BAI Song; LI Xiao-feng; LIU Cai-xia; PENG Yun; YUAN Feng; GUO Jian; SONG Zhen-jiang; William M. Novick; LI Zhong-zhi

    2012-01-01

    Background Vascular rings are uncommon anomalies in which preferred strategies for diagnosis and management may vary among institutions.In this study,we reported our approach and a review of our 5-year experience.Methods From May 2006 to April 2011,45 children (31 boys) with vascular rings underwent surgical repair at Beijing Children's Hospital.Nineteen patients (26%) had associated heart anomalies.Results There were two hospital deaths.At follow-up,11 patients still had intermittent respiratory symptoms,but these symptoms had no effect on growth or physical activities.No patients required reoperation.Conclusions The rates of misdiagnosis and missed diagnosis of vascular rings are higher than those of other congenital heart diseases.A high index of clinical suspicion coupled with the use of computed tomography enables early diagnosis.Surgical repair can be performed successfully,although a number of patients will have persistent symptoms.

  11. S.E. Mitchell Vascular Anomalies Flow Chart (SEMVAFC): A visual pathway combining clinical and imaging findings for classification of soft-tissue vascular anomalies

    International Nuclear Information System (INIS)

    Classification of vascular anomalies (VAs) is challenging due to overlapping clinical symptoms, confusing terminology in the literature and unfamiliarity with this complex entity. It is important to recognize that VAs include two distinct entities, vascular tumours (VTs) and vascular malformations (VaMs). In this article, we describe SE Mitchell Vascular Anomalies Flow Chart (SEMVAFC), which arises from a multidisciplinary approach that incorporates clinical symptoms, physical examination and magnetic resonance imaging (MRI) findings to establish International Society for the Study of Vascular Anomalies (ISSVA)-based classification of the VAs. SEMVAFC provides a clear visual pathway for physicians to accurately diagnose Vas, which is important as treatment, management, and prognosis differ between VTs and VaMs

  12. Vascular anomalies of the cerebellopontine angle; Vaskulaere Erkrankungen des Kleinhirnbrueckenwinkels

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    Papanagiotou, P.; Grunwald, I.Q.; Politi, M.; Struffert, T.; Ahlhelm, F.; Reith, W. [Universitaetsklinikum des Saarlandes, Homburg/Saar (Germany). Klinik fuer Diagnostische und Interventionelle Neuroradiologie

    2006-03-15

    Vascular anomalies of the cerebellopontine angle are rare compared to tumors in this area. Irritation of the trigeminal, facial, or vestibulocochlear nerve may cause trigeminal neuralgia, hemifacial spasm and vertigo, or tinnitus accordingly. Vessel loops in the cerebellopontine cisterns may cause compression at the root entry or exit zone of the cranial nerves V, VII, and VIII, a phenomenon which is called ''vascular loop syndrome.'' Megadolichobasilar artery and aneurysms of the vertebrobasilar system can also lead to dislocation and compression of the cranial nerves and brain stem. Three-dimensional CISS MR imaging and MR angiography are useful in the detection of neurovascular compression. Microvascular decompression is an effective surgical procedure in the management of compression syndromes of the cranial nerves V, VII, and VIII. (orig.) [German] Gegenueber den Raumforderungen stellen vaskulaere Veraenderungen des Kleinhirnbrueckenwinkels eher eine Ausnahme dar. Trigeminusneuralgie, hemifazialer Spasmus und Schwindel oder Tinnitus koennen bei Irritationen des Nervus trigeminus, facialis und vestibulocochlearis auftreten. Schlingenbildungen der Gefaesse in den Kleinhirnzisternen koennen eine Kompression der Eintritts- oder Austrittszonen der Hirnnerven V, VII und VIII am Hirnstamm hervorrufen, was als ''Vascular-loop-Syndrom'' bezeichnet wird. Zu Verlagerungen und Kompressionen von Hirnnerven und Hirnstamm koennen, wenn auch seltener, die Megadolichobasilaris und Aneurysmen des vertebrobasilaeren Systems fuehren. Bezueglich der Bildgebung ist die Magnetresonanztomographie (MRT) die Methode der Wahl. Die 3D-CISS-Sequenz und die MR-Angiographie sind hilfreich zur Darstellung der neurovaskulaeren Kompression. Die Methode der mikrovaskulaeren Dekompression ist eine wirkungsvolle Methode zur Beseitigung gefaessbedingter Kompressionen der Hirnnerven V, VII und VIII. (orig.)

  13. Multiple vascular anomalies involving renal, testicular and suprarenal arteries

    Directory of Open Access Journals (Sweden)

    Suresh Rao

    2015-09-01

    Full Text Available Knowledge of variations of blood vessels of the abdomen is important during operative, diagnostic and endovascular pro- cedures. During routine dissection of the abdominal cavity, we came across multiple vascular anomalies involving renal, suprarenal and testicular arteries. The left kidney was supplied by two renal arteries originating together from the abdomi- nal aorta, and the right kidney was supplied by two accessory renal arteries, one of which was arising from the right renal artery and the other one from the aorta (about 2 inches below the origin of the renal artery. Accessory renal veins were present on both sides. The right testicular artery was arising from the lower accessory renal artery. The left testicular artery was looping around the inferior tributary of the left renal vein, whereby forming a sharp kink. The left middle suprarenal artery was diving into three small branches; the upper two branches were supplying the left suprarenal gland, whereas the lower branch was supplying the left kidney. Furthermore, detailed literature and the clinical and surgical importance of the case are discussed. [Arch Clin Exp Surg 2015; 4(3.000: 168-171

  14. Molecular biology of breast cancer metastasis Molecular expression of vascular markers by aggressive breast cancer cells

    International Nuclear Information System (INIS)

    During embryogenesis, the formation of primary vascular networks occurs via the processes of vasculogenesis and angiogenesis. In uveal melanoma, vasculogenic mimicry describes the 'embryonic-like' ability of aggressive, but not nonaggressive, tumor cells to form networks surrounding spheroids of tumor cells in three-dimensional culture; these recapitulate the patterned networks seen in patients' aggressive tumors and correlates with poor prognosis. The molecular profile of these aggressive tumor cells suggests that they have a deregulated genotype, capable of expressing vascular phenotypes. Similarly, the embryonic-like phenotype expressed by the aggressive human breast cancer cells is associated with their ability to express a variety of vascular markers. These studies may offer new insights for consideration in breast cancer diagnosis and therapeutic intervention strategies

  15. MDCT assessment of tracheomalacia in symptomatic infants with mediastinal aortic vascular anomalies: preliminary technical experience

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    Lee, Edward Y. [Children' s Hospital Boston and Harvard Medical School, Departments of Radiology and Medicine, Pulmonary Division, Boston, MA (United States); Mason, Keira P. [Children' s Hospital Boston and Harvard Medical School, Department of Anesthesiology, Boston, MA (United States); Zurakowski, David [Children' s Hospital Boston and Harvard Medical School, Department of Orthopedic Surgery, Boston, MA (United States); Waltz, David A. [Children' s Hospital Boston and Harvard Medical School, Department of Medicine, Division of Respiratory Diseases, Boston, MA (United States); Ralph, Amy; Riaz, Farhana [Children' s Hospital Boston and Harvard Medical School, Department of Radiology, Boston, MA (United States); Boiselle, Phillip M. [Harvard Medical School, Department of Radiology, Beth Israel Deaconess Medical Center, Boston, MA (United States)

    2008-01-15

    Mediastinal aortic vascular anomalies are relatively common causes of extrinsic central airway narrowing in infants with respiratory symptoms. Surgical correction of mediastinal aortic vascular anomalies alone might not adequately treat airway symptoms if extrinsic narrowing is accompanied by intrinsic tracheomalacia (TM), a condition that escapes detection on routine end-inspiratory imaging. Paired inspiratory-expiratory multidetector CT (MDCT) has the potential to facilitate early diagnosis and timely management of TM in symptomatic infants with mediastinal aortic vascular anomalies. To assess the technical feasibility of paired inspiratory-expiratory MDCT for evaluating TM among symptomatic infants with mediastinal aortic vascular anomalies. The study group consisted of five consecutive symptomatic infants (four male, one female; mean age 4.1 months, age range 2 weeks to 6 months) with mediastinal aortic vascular anomalies who were referred for paired inspiratory-expiratory MDCT during a 22-month period. CT angiography was concurrently performed during the end-inspiration phase of the study. Two pediatric radiologists in consensus reviewed all CT images in a randomized and blinded fashion. The end-inspiration and end-expiration CT images were reviewed for the presence and severity of tracheal narrowing. TM was defined as {>=}50% reduction in tracheal cross-sectional luminal area between end-inspiration and end-expiration. The presence of TM was compared to the bronchoscopy results when available (n = 4). Paired inspiratory-expiratory MDCT was technically successful in all five patients. Mediastinal aortic vascular anomalies included a right aortic arch with an aberrant left subclavian artery (n = 2), innominate artery compression (n = 2), and a left aortic arch with an aberrant right subclavian artery (n = 1). Three (60%) of the five patients demonstrated focal TM at the level of mediastinal aortic vascular anomalies. The CT results were concordant with the

  16. Multiple vascular anomalies involving testicular, suprarenal arteries and lumbar veins

    Directory of Open Access Journals (Sweden)

    P Jyothsna

    2012-01-01

    Full Text Available Testicular arteries arise from the abdominal aorta and the inferior suprarenal artery from the renal artery. There are reports about variant origin and course of these arteries. Accessory testicular artery is also a common finding but its providing origin to inferior suprarenal artery is an important observation. During a routine dissection of abdomen of approximately 55-year-old male cadaver, unique vascular abnormality was observed. On the left side, a common arterial trunk originating from abdominal aorta immediately branched to give rise to superior testicular and inferior suprarenal arteries, the former after a short course hooked by the left suprarenal vein. In addition, the left suprarenal vein, second left lumbar vein, and left testicular vein joined to form a common trunk which drained into the left renal vein. A sound knowledge of vascular variations in relation to the kidney and suprarenal gland is important to surgeons dissecting the abdominal cavity.

  17. SURGICAL MANAGEMENT OF CONGENITAL VASCULAR ANOMALIES WITH N BUTYL CYANOACRYLATE

    OpenAIRE

    Rajendra Prasad; Biswajit

    2015-01-01

    BACKGROUND: Congenital vascular malformation is stressful both to the patient and the treating physician. Use of sclerosing agent followed by surgical excision has been used by many. In our study we have used percutaneous injection of N - butyl cyanoacrylate (NBCA) in such lesions to make these lesions a menable to easy excision. N Butyl Cyanoacrylate (NBCA) is a rapidly hardening liquid adhesive often referred to as glue. The substance polymerizes immediately...

  18. The role of MRI in diagnostic algorithm of cervicofacial vascular anomalies in children

    International Nuclear Information System (INIS)

    Vascular anomalies are usually diagnosed through their clinical picture and history. The purpose of this study was to assess the role of MR imaging in initial assessment of cervicofacial vascular anomalies in children. Twenty pediatric patients with vascular anomalies located in the cervicofacial region underwent MRI examination in our department. Images were evaluated for lesion detectability and its signal characteristics (on T1w, T2w images with fat suppression and contrast enhanced T1w sequences); the extent of the lesions and surrounding tissue involvement were also assessed. In the studied group MR images revealed all anomalies and provided information of their anatomic extent and invasion of surrounding anatomic structures. Nine hemangiomas and six venous malformations were found among studied patients. Two children had multiloculated lesions corresponding to lymphatic malformations. One examination visualized a lesion consisting mainly of dilated vascular channels with an apparent feeding artery, which was consistent with arteriovenous malformation. Two remaining lesions were mixed malformations. Nine patients had lesions limited to subcutaneous tissue. Two masses infiltrated bone structures. There was muscle involvement found in nine cases. MR imaging is a well-established method for detection and monitoring of vascular anomalies in children. With ultrasound used mostly for initial diagnosis and additional flow assessment, angiography viewed as an invasive therapeutic method and computed tomography used only in specific situations due to its high irradiation dose, magnetic resonance is the best imaging method used in differential diagnosis and topographical characterization of vascular malformations and tumors of cervicofacial area in pediatric patients. Noninvasively and without irradiation, it enables evaluation of the extent and characteristics of lesions and planning proper therapeutic strategy

  19. Efficacy and Safety of Mammalian Target of Rapamycin Inhibitors in Vascular Anomalies: A Systematic Review.

    Science.gov (United States)

    Nadal, Marion; Giraudeau, Bruno; Tavernier, Elsa; Jonville-Bera, Annie-Pierre; Lorette, Gerárd; Maruani, Annabel

    2016-04-12

    Mammalian target of rapamycin (mTOR) inhibitors are a promising new treatment in vascular anomalies, but no published randomized controlled trials are available. The aim of this systematic review of all reported cases was to assess the efficacy and safety of mTOR inhibitors in all vascular anomalies, except cancers, in children and adults. In November 2014 MEDLINE, CENTRAL, LILACS and EMBASE were searched for studies of mTOR inhibitors in any vascular condition, except for malignant lesions, in humans. Fourteen publications and 9 posters, with data on 25 and 59 patients, respectively, all cases, at a median time of 2 weeks (95% confidence interval 1-10 weeks). Sirolimus was well tolerated, the main side-effect being mouth sores, which led to treatment withdrawal in one case. The dosage of sirolimus was heterogeneous, the most common being 1.6 mg/m2/day. PMID:26607948

  20. Clinical analysis of vascular anomalies: a hospital-based retrospective study of 592 patients in southeast China

    Institute of Scientific and Technical Information of China (English)

    YE Cai-sheng; PAN Ling-xiao; HUANG Yong-bo; HAN An-jia; YE Run-yi; LI Song-qi; LI Xiao-xi; L(U) Wei-ming; WANG Shen-ming

    2011-01-01

    Background Vascular anomalies are common and multidisciplinary involved diseases. The greatest impediment to their treatment in the past was their confusing terminology and clinical heterogeneities. This hospital-based retrospective study assessed some clinical characteristics, diagnosis, therapies and outcomes of patients with vascular anomalies in southeast China.Methods A total of 592 vascular anomalies patients (patients with intracranial tissues or viscera involved were excluded), admitted to the First Affiliated Hospital of Sun Yat-sen University from January 2006 to September 2009, were enrolled in the study. Data for clinical characteristics, diagnosis, therapies and outcomes were collected and analyzed.Results Of the 592 patients, the male:female ratios in the vascular tumor group (n=187) and the vascular malformation group (n=405) were 1∶1.49 and 1∶1.06 respectively, with no significant difference between them. The mean onset age of the vascular tumor group was significantly younger than that of the vascular malformation group (P <0.001). The head and neck were the most commonly (31.4%) involved areas in vascular anomalies. A total of 23.8% of the patients with vascular anomalies had definite symptoms caused by the vascular lesions. In the vascular tumor group, 94.1% of them were infantile hemangiomas. Venous malformation was the most common (41.0%) subtype of vascular malformations.Surgical therapy was undertaken in 94.2% of the patients with vascular anomalies. Of the 519 patients available for the 16-58 month follow-up, 322 patients (62.0%) were cured, 108 patients (20.8%) were markedly improved, 57 patients (11.0%) were partially improved, and 32 patients (6.2%) were uncured.Conclusions Vascular anomalies are clinically heterogeneous. While the outcome is generally favorable, further effort should be made to determine the appropriate terminology and management.

  1. Current concepts in the classification, diagnosis and treatment of vascular anomalies

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    Ernemann, Ulrike, E-mail: ulrike.ernemann@med.uni-tuebingen.d [Department of Diagnostic and Interventional Neuroradiology, Radiological Clinic, University Hospital Tuebingen, Hoppe-Seyler-Strasse 3, 72076 Tuebingen (Germany); Kramer, Ulrich; Miller, Stephan [Department of Diagnostic and Interventional Radiology, Radiological Clinic, University Hospital Tuebingen (Germany); Bisdas, Sotirios [Department of Diagnostic and Interventional Neuroradiology, Radiological Clinic, University Hospital Tuebingen, Hoppe-Seyler-Strasse 3, 72076 Tuebingen (Germany); Rebmann, Hans [Department of Paediatrics, Children' s Hospital, University Hospital Tuebingen (Germany); Breuninger, Helmut [Department of Dermatology, University Hospital Tuebingen (Germany); Zwick, Christine [Department of Hand, Plastic, Reconstructive and Burns Surgery, BG Trauma Clinic Tuebingen, University Hospital Tuebingen (Germany); Hoffmann, Juergen [Department of Oral and Maxillofacial Surgery, University Hospital Tuebingen (Germany)

    2010-07-15

    Patients with extended vascular anomalies may suffer from significant aesthetic and functional impairment and represent a challenge to therapeutic planning, which is best met by an interdisciplinary concept. In agreement with the International Society for the Study of Vascular Anomalies (ISSVA), vascular lesions are classified into haemangiomas as proliferating endothelial tumours on the one hand and congenital vascular malformations on the other. According to the preponderant vascular channels and hemodynamic characteristics, malformations are subdivided into low flow (venous, lymphatic and capillary) lesions and high-flow malformations. Diagnostic imaging should be targeted at the specific structural and functional informations required for treatment planning. The imaging modality of choice to provide these informations is magnetic resonance imaging (MRI) supplemented by magnetic resonance angiography (MRA) with high spatial and temporal resolution. Treatment indications for haemangiomas depend on the proliferative behaviour of the lesion and comprise {beta}-blockers in order to induce involution as well as cryotherapy, laser and open surgery. Interventional radiological procedures have evolved as an essential element in an interdisciplinary treatment plan for vascular malformations and include percutaneous sclerotherapy with ethanol and OK-432 for venous and lymphatic malformations and transarterial embolization for high-flow lesions.

  2. Current concepts in the classification, diagnosis and treatment of vascular anomalies

    International Nuclear Information System (INIS)

    Patients with extended vascular anomalies may suffer from significant aesthetic and functional impairment and represent a challenge to therapeutic planning, which is best met by an interdisciplinary concept. In agreement with the International Society for the Study of Vascular Anomalies (ISSVA), vascular lesions are classified into haemangiomas as proliferating endothelial tumours on the one hand and congenital vascular malformations on the other. According to the preponderant vascular channels and hemodynamic characteristics, malformations are subdivided into low flow (venous, lymphatic and capillary) lesions and high-flow malformations. Diagnostic imaging should be targeted at the specific structural and functional informations required for treatment planning. The imaging modality of choice to provide these informations is magnetic resonance imaging (MRI) supplemented by magnetic resonance angiography (MRA) with high spatial and temporal resolution. Treatment indications for haemangiomas depend on the proliferative behaviour of the lesion and comprise β-blockers in order to induce involution as well as cryotherapy, laser and open surgery. Interventional radiological procedures have evolved as an essential element in an interdisciplinary treatment plan for vascular malformations and include percutaneous sclerotherapy with ethanol and OK-432 for venous and lymphatic malformations and transarterial embolization for high-flow lesions.

  3. Microfabrication of polydimethylsiloxane phantoms to simulate tumor hypoxia and vascular anomaly

    Science.gov (United States)

    Wu, Qiang; Ren, Wenqi; Yu, Zelin; Dong, Erbao; Zhang, Shiwu; Xu, Ronald X.

    2015-12-01

    We introduce a microfluidic approach to simulate tumor hypoxia and vascular anomaly. Polydimethylsiloxane (PDMS) phantoms with embedded microchannel networks were fabricated by a soft lithography process. A dialysis membrane was sandwiched between two PDMS slabs to simulate the controlled mass transport and oxygen metabolism. A tortuous microchannel network was fabricated to simulate tumor microvasculature. A dual-modal multispectral and laser speckle imaging system was used for oxygen and blood flow imaging in the tumor-simulating phantom. The imaging results were compared with those of the normal vasculature. Our experiments demonstrated the technical feasibility of simulating tumor hypoxia and vascular anomalies using the proposed PDMS phantom. Such a phantom fabrication technique may be potentially used to calibrate optical imaging devices, to study the mechanisms for tumor hypoxia and angiogenesis, and to optimize the drug delivery strategies.

  4. [Summary of 2004 Chinese National Conference on oral and maxillofacial vascular anomalies].

    Science.gov (United States)

    Zheng, Jia-Wei; Zhang, Zhi-Yuan; Zheng, Cang-Shang; Zhou, Qi

    2004-08-01

    Congenital vascular anomalies have been the subject of much controversy and confusion over the years, many remain to be investigated and resolved. Authorized by the Managing Director Board of Chinese Stomatological Association (CSA), 2004 Chinese National Conference on Oral and Maxillofacial Vascular Anomalies was successfully held on July 15 to 18, 2004 in Shenzhen Grand Hotel. The conference was sponsored by Chinese Society of Oral and Maxillofacial Surgery (CSOMS), and undertaken by the Second People's Hospital of Shenzhen city. Professor ZHANG Zhen-kang, president of CSA, Professor QIU Wei-liu, president of CSOMS and academician of Chinese Academy of Engineers, and Professor LIU Bao-lin, vice president of CSOMS were present and made important speech at the meeting. More than 120 delegates nationwide attended this conference. Through a 3-day of oral presentation and discussion, the terminology, classification, treatment selection and outcome measurement of oral and maxillofacial hemangioma and vascular malformations were concerted among the delegates. Hemangiomas and vascular malformations have been recognized as distinct diseases that exhibit unique properties and behavior that demand an appropriately tailored treatment plan. The classification of Waner and Suen was adopted and different treatment modalities were reviewed and advocated for different lesions. Delegates were most interested in intralesional injection of Pingyangmycin for venous malformations, Krypton laser photodynamic therapy of venular malformations, Nd:YAG laser therapy for deep head and neck venous malformations after surgical exposure of the lesions, as well as "double" embolization of large venous malformations reported by Professor QIN Zhong-ping. The conference witnessed the foundation of the Division of Vascular Anomalies, Chinese Society of Oral and Maxillofacial Surgery. PMID:15349690

  5. Vascular anomalies: A pictorial review of nomenclature,diagnosis and treatment

    Institute of Scientific and Technical Information of China (English)

    John; L; Nosher; Philip; G; Murillo; Mark; Liszewski; Vyacheslav; Gendel; Christopher; E; Gribbin

    2014-01-01

    Vascular anomalies,including vascular malformations and tumors,are frequently straightforward to detect;however,accurate diagnosis and appropriate treatment are often challenging.Misdiagnosis of these lesions can lead clinicians in the wrong direction when treat-ing these patients,which can have unfavorable results.This review presents an overview of the classification systems that have been developed for the diagnosis of vascular lesions with a focus on the imaging charac-teristics.Pictorial examples of each lesion on physical examination,as well as non-invasive and minimally invasive imaging are presented.An overview of the en-dovascular treatment of these lesions is also given.In some cases,vascular anomalies may be associated with an underlying syndrome and several of the most com-monly encountered syndromes are discussed.Under-standing of the classification systems,familiarity with the treatment options and knowledge of the associated syndromes are essential for all physicians working with this patient population.The approach to the described entities necessitates an organized multi-disciplinary team effort,with diagnostic imaging playing an increas-ingly important role in the proper diagnosis and a com-bined interventional radiologic and surgical treatment method showing promising results.

  6. The current approach to the diagnosis of vascular anomalies of the head and neck: A pictorial essay

    Energy Technology Data Exchange (ETDEWEB)

    Goei, Sinny; Singh, Aarti; Ghosh, Sujoy; Gupta, Sunta [Dept. of Oral Medicine and Radiology, Maulana Azad Institute of Dental Sciences, Delhi (India); Gupta, Swati; Prakash, Anjali [Dept. of Radiodiagnosis, Lok Nayak Jaiprakash Hospital, Delhi (India); Narang, Poonam [Dept. of Radiodiagnosis, Govind Ballabh Pant Hospital, Delhi (India)

    2015-06-15

    Throughout the years, various classifications have evolved for the diagnosis of vascular anomalies. However, it remains difficult to classify a number of such lesions. Because all hemangiomas were previously considered to involute, if a lesion with imaging and clinical characteristics of hemangioma does not involute, then there is no subclass in which to classify such a lesion, as reported in one of our cases. The recent classification proposed by the International Society for the Study of Vascular Anomalies (ISSVA, 2014) has solved this problem by including non-involuting and partially involuting hemangioma in the classification. We present here five cases of vascular anomalies and discuss their diagnosis in accordance with the ISSVA (2014) classification. A non-involuting lesion should not always be diagnosed as a vascular malformation. A non-involuting lesion can be either a hemangioma or a vascular malformation depending upon its clinicopathologic and imaging characteristics.

  7. The current approach to the diagnosis of vascular anomalies of the head and neck: A pictorial essay

    International Nuclear Information System (INIS)

    Throughout the years, various classifications have evolved for the diagnosis of vascular anomalies. However, it remains difficult to classify a number of such lesions. Because all hemangiomas were previously considered to involute, if a lesion with imaging and clinical characteristics of hemangioma does not involute, then there is no subclass in which to classify such a lesion, as reported in one of our cases. The recent classification proposed by the International Society for the Study of Vascular Anomalies (ISSVA, 2014) has solved this problem by including non-involuting and partially involuting hemangioma in the classification. We present here five cases of vascular anomalies and discuss their diagnosis in accordance with the ISSVA (2014) classification. A non-involuting lesion should not always be diagnosed as a vascular malformation. A non-involuting lesion can be either a hemangioma or a vascular malformation depending upon its clinicopathologic and imaging characteristics

  8. Suspected cervical spinal cord vascular anomaly in an African warthog (Phacochoerus africanus).

    Science.gov (United States)

    Whiteside, Douglas P; Shury, Todd K; Black, Sandra R; Raverty, Stephen

    2006-09-01

    Vascular myelopathies of the spinal cord have not been described in Suidae, and are a rare finding in companion animals. An 8.5-yr female African warthog (Phacochoerus africanus) presented with an acute onset of tetraparesis. Based on neurologic findings, a cervical spinal cord lesion between C7-T2 was suspected. Magnetic resonance imaging revealed severe intramedullary hemorrhage with suspected abnormal vessels in the spinal cord at the level of the seventh cervical vertebrae. The acute onset of clinical signs and rapid deterioration of neurological status precluded surgical managements. A vascular anomaly was suspected on gross pathology and histology. Immunohistochemistry identified the lesion as a spontaneous intramedullary hematoma. Spontaneous intramedullary hematomyelia should be considered as a differential for acute onset of paresis in suid species. PMID:17319141

  9. Anomalies.

    Science.gov (United States)

    Online-Offline, 1999

    1999-01-01

    This theme issue on anomalies includes Web sites, CD-ROMs and software, videos, books, and additional resources for elementary and junior high school students. Pertinent activities are suggested, and sidebars discuss UFOs, animal anomalies, and anomalies from nature; and resources covering unexplained phenonmenas like crop circles, Easter Island,…

  10. In vivo photoacoustic imaging of subcutaneous vasculature and vascular anomalies in small animals

    Science.gov (United States)

    Lao, Yeqi; Zhou, Feifan; Wang, Huiying

    2008-02-01

    Photoacoustic imaging is a noninvasive, nonionizing imaging modality that combines the merits of high optical contrast, good ultrasonic resolution and satisfactory imaging depth. These features make it suitable for detecting the pathological changes of subcutaneous vasculature. A setup of photoacoustic imaging system was employed to achieve images of subcutaneous vasculature and subcutaneous tumor-related vascular anomalies in mice in vivo. The networks of subcutaneous vasculature are clearly identified in the photoacoustic images, blood vessels which are invisible to the naked eye under the skin surface and tumor-related abnormal vasculature are also revealed by the photoacoustic system. Moreover, micro blood vessels correlated with the high frequency signals become evident after digital image processing based on high-pass filtering. This work demonstrates that photoacoustic imaging could potentially provide a valuable tool for monitoring the pathological changes of subcutaneous vasculature in early stage.

  11. Multidetector-row computed tomography of thoracic aortic anomalies in dogs and cats: Patent ductus arteriosus and vascular rings

    Directory of Open Access Journals (Sweden)

    Nolte Ingo

    2011-09-01

    Full Text Available Abstract Background Diagnosis of extracardiac intrathoracic vascular anomalies is of clinical importance, but remains challenging. Traditional imaging modalities, such as radiography, echocardiography, and angiography, are inherently limited by the difficulties of a 2-dimensional approach to a 3-dimensional object. We postulated that accurate characterization of malformations of the aorta would benefit from 3-dimensional assessment. Therefore, multidetector-row computed tomography (MDCT was chosen as a 3-dimensional, new, and noninvasive imaging technique. The purpose of this study was to evaluate patients with 2 common diseases of the intrathoracic aorta, either patent ductus arteriosus or vascular ring anomaly, by contrast-enhanced 64-row computed tomography. Results Electrocardiography (ECG-gated and thoracic nongated MDCT images were reviewed in identified cases of either a patent ductus arteriosus or vascular ring anomaly. Ductal size and morphology were determined in 6 dogs that underwent ECG-gated MDCT. Vascular ring anomalies were characterized in 7 dogs and 3 cats by ECG-gated MDCT or by a nongated thoracic standard protocol. Cardiac ECG-gated MDCT clearly displayed the morphology, length, and caliber of the patent ductus arteriosus in 6 affected dogs. Persistent right aortic arch was identified in 10 animals, 8 of which showed a coexisting aberrant left subclavian artery. A mild dilation of the proximal portion of the aberrant subclavian artery near its origin of the aorta was present in 4 dogs, and a diverticulum analogous to the human Kommerell's diverticulum was present in 2 cats. Conclusions Contrast-enhanced MDCT imaging of thoracic anomalies gives valuable information about the exact aortic arch configuration. Furthermore, MDCT was able to characterize the vascular branching patterns in dogs and cats with a persistent right aortic arch and the morphology and size of the patent ductus arteriosus in affected dogs. This additional

  12. The association of aggressive and chronic periodontitis with systemic manifestations and dental anomalies in a jordanian population: a case control study

    OpenAIRE

    Karasneh Jumana A; Abbadi Muna S; Taha Anas H; Ababneh Khansa T; Khader Yousef S

    2010-01-01

    Abstract Background The relationship between dental anomalies and periodontitis has not been documented by earlier studies. Although psychological factors have been implicated in the etiopathogenesis of periodontitis, very little information has so far been published about the association of anxiety and depression with aggressive periodontitis. The aim of this study was to investigate the association of chronic periodontitis and aggressive periodontitis with certain systemic manifestations an...

  13. Multidetector CT of congenital vascular anomalies and associated complications in newborns and infants

    International Nuclear Information System (INIS)

    Purpose: To assess the value of multidetector CT (MDCT) for evaluation of vascular anomalies (VA) and associated complications in newborns and infants. Materials and Methods: Seventy-five children (mean age: 9±6 months, range: 2 weeks to 24 months) with VA were examined using MDCT (4-, 8- or 16-row; collimation 0.5-1.25 mm; scan time 7-30 s), which was performed under controlled ventilation or free breathing. Image quality was rated using a 5-point scale. Image findings were correlated to echocardiography, conventional catheter angiography (CCA), bronchoscopy, and intraoperative findings. Results: High quality MDCT data were almost free of cardiac and respiratory motion. In all cases, VA morphology and topography in relation to adjacent structures, e.g. tracheal and esophageal compression caused by an aortic ring, could be assessed exactly and allowed the final diagnosis. Even aberrant vessels, such as aorto-pulmonary collaterals (MAPCA) with a diameter of less than 1 mm, could be identified and excellently visualized. Eighty percent (60/75) of all patients had benefited from the MDCT: in 31 patients CCA was neither necessary to perform surgical planning nor to exclude a VA; in an additional 29 patients radiation doses and sedation time due to interventional procedures could be reduced markedly. Conclusions: MDCT can now be regarded as the modality of choice as a minimally invasive, robust, and accurate technique for the diagnosis of complex VA, their potentially life-threatening complications and preoperative planning even in newborns and infants. Its accuracy for detecting VA appears equivalent to CCA while it is more accurate in delineating potential life-threatening complications. (orig.)

  14. PHACE syndrome: MRI of intracerebral vascular anomalies and clinical findings in a series of 12 patients

    International Nuclear Information System (INIS)

    PHACE (posterior fossa defects, haemangioma, arterial anomalies, coarctation of the aorta and cardiac defects, eye abnormalities) syndrome describes a constellation of abnormalities that can occur in association with segmental craniofacial infantile haemangioma. To report the spectrum of clinical and imaging abnormalities seen in a cohort of children. A retrospective review of the clinical and imaging records of all patients diagnosed with PHACE syndrome between 1998 and 2009 was performed. Information sought included patient demographics, craniofacial segments involved, imaging findings and other extracutaneous abnormalities. Twelve patients were diagnosed with PHACE syndrome over 11 years. All patients had a segmental craniofacial haemangioma. Involved facial segments, in order of frequency, were frontotemporal (12), maxillary (8), mandibular (5) and frontonasal (1). The most common extracutaneous abnormalities were neurovascular anomalies (10), with many patients having multiple anomalies. The spectrum of arterial anomalies ranged from hypoplasia (9) to ectasia (3), anomalous origin/course (2) and persistent fetal anastomosis (2). Other anomalies found included cardiac anomalies (3), coarctation of the aorta (2), posterior fossa malformations (1) and sternal region anomalies (1). Intracranial anomalies are the most common extracutaneous feature of PHACE syndrome. The contribution of the radiologist in the recognition of such anomalies is important for the diagnosis of PHACE syndrome. (orig.)

  15. PHACE syndrome: MRI of intracerebral vascular anomalies and clinical findings in a series of 12 patients.

    LENUS (Irish Health Repository)

    Bracken, Jennifer

    2012-02-01

    BACKGROUND: PHACE (posterior fossa defects, haemangioma, arterial anomalies, coarctation of the aorta and cardiac defects, eye abnormalities) syndrome describes a constellation of abnormalities that can occur in association with segmental craniofacial infantile haemangioma. OBJECTIVE: To report the spectrum of clinical and imaging abnormalities seen in a cohort of children. MATERIALS AND METHODS: A retrospective review of the clinical and imaging records of all patients diagnosed with PHACE syndrome between 1998 and 2009 was performed. Information sought included patient demographics, craniofacial segments involved, imaging findings and other extracutaneous abnormalities. RESULTS: Twelve patients were diagnosed with PHACE syndrome over 11 years. All patients had a segmental craniofacial haemangioma. Involved facial segments, in order of frequency, were frontotemporal (12), maxillary (8), mandibular (5) and frontonasal (1). The most common extracutaneous abnormalities were neurovascular anomalies (10), with many patients having multiple anomalies. The spectrum of arterial anomalies ranged from hypoplasia (9) to ectasia (3), anomalous origin\\/course (2) and persistent fetal anastomosis (2). Other anomalies found included cardiac anomalies (3), coarctation of the aorta (2), posterior fossa malformations (1) and sternal region anomalies (1). CONCLUSION: Intracranial anomalies are the most common extracutaneous feature of PHACE syndrome. The contribution of the radiologist in the recognition of such anomalies is important for the diagnosis of PHACE syndrome.

  16. PHACE syndrome: MRI of intracerebral vascular anomalies and clinical findings in a series of 12 patients

    Energy Technology Data Exchange (ETDEWEB)

    Bracken, Jennifer; Robinson, Ian; Snow, Aisling; Rea, David; Phelan, Ethna [Our Lady' s Children' s Hospital, Department of Radiology, Dublin (Ireland); Watson, Rosemarie; Irvine, Alan D. [Our Lady' s Children' s Hospital, Department of Dermatology, Dublin (Ireland)

    2011-09-15

    PHACE (posterior fossa defects, haemangioma, arterial anomalies, coarctation of the aorta and cardiac defects, eye abnormalities) syndrome describes a constellation of abnormalities that can occur in association with segmental craniofacial infantile haemangioma. To report the spectrum of clinical and imaging abnormalities seen in a cohort of children. A retrospective review of the clinical and imaging records of all patients diagnosed with PHACE syndrome between 1998 and 2009 was performed. Information sought included patient demographics, craniofacial segments involved, imaging findings and other extracutaneous abnormalities. Twelve patients were diagnosed with PHACE syndrome over 11 years. All patients had a segmental craniofacial haemangioma. Involved facial segments, in order of frequency, were frontotemporal (12), maxillary (8), mandibular (5) and frontonasal (1). The most common extracutaneous abnormalities were neurovascular anomalies (10), with many patients having multiple anomalies. The spectrum of arterial anomalies ranged from hypoplasia (9) to ectasia (3), anomalous origin/course (2) and persistent fetal anastomosis (2). Other anomalies found included cardiac anomalies (3), coarctation of the aorta (2), posterior fossa malformations (1) and sternal region anomalies (1). Intracranial anomalies are the most common extracutaneous feature of PHACE syndrome. The contribution of the radiologist in the recognition of such anomalies is important for the diagnosis of PHACE syndrome. (orig.)

  17. The use of interstitial echo-guided diode laser 980-nm for deep vascular anomalies in pediatric patients: a preliminary study

    Directory of Open Access Journals (Sweden)

    Luigino Santecchia

    2013-09-01

    Full Text Available A wide range of therapeutic options is available to treat vascular anomalies, arising from the systemic therapies to surgery or using lasers. The purpose of this preliminary study is to assess the effectiveness of treatment of vascular anomalies anywhere in the body, along with the use of interstitial echo-guided 980 nm diode laser. The analysis occurs through accurate angio magnetic resonance imaging (MRI pre- and post-treatment measurements. We enrolled all the patients (16 affected on vascular malformations everywhere in the body, treated from January to August 2012. We obtained excellent results in 6 patients (37.5% with mean mass reduction of 85%, good in 9 patients (56% with mean mass reduction of 65% and unsatisfactory in 1 patient (6%. In pediatric patients, low-flow vascular malformations resistant to progressive sclerotherapy or in critical anatomical sites, benefit of echo guided interstitial 980-nm diode laser.

  18. Visualization of congenital thoracic vascular anomalies using multi-detector row computed tomography and two- and three-dimensional post-processing

    Energy Technology Data Exchange (ETDEWEB)

    Schertler, Thomas [Department of Medical Radiology, Institute of Diagnostic Radiology, University Hospital Zurich (Switzerland); Wildermuth, Simon [Institute of Diagnostic Radiology, Kantonsspital St.Gallen (Switzerland)]. E-mail: Simon.Wildermuth@kssg.ch; Teodorovic, Ninoslav [Department of Medical Radiology, Institute of Diagnostic Radiology, University Hospital Zurich (Switzerland); Mayer, Dieter [Division of Cardiovascular Surgery, University Hospital Zurich (Switzerland); Marincek, Borut [Department of Medical Radiology, Institute of Diagnostic Radiology, University Hospital Zurich (Switzerland); Boehm, Thomas [Department of Medical Radiology, Institute of Diagnostic Radiology, University Hospital Zurich (Switzerland); Department of Medical Radiology, Institute of Diagnostic Radiology, Kantonsspital Chur (Switzerland)

    2007-01-15

    Anomalies of the vascular system are caused by false embryogenesis and are therefore present from birth. Single-detector row spiral computed tomography angiography (CTA) and multi-detector row computed tomography angiography (MDCTA) have gained increasing importance in the non-invasive assessment of vascular pathologies and replace conventional angiography in many cases. High-resolution volumetric datasets that are acquired during a single breath-hold give the possibility of two- (2D) and three-dimensional (3D)-post-processing. Due to post-processing, even complex vascular malformations are visualized in an understandable way. Furthermore, CTA, in contrast to conventional angiography, depicts not only the vascular structures but also allows assessment of the surrounding anatomical structures. We present cases of rare congenital anomalies of the thoracic vessels using MDCT with special respect to 2D- and 3D-post-processing.

  19. Nicotinamide inhibits vasculogenic mimicry, an alternative vascularization pathway observed in highly aggressive melanoma.

    Directory of Open Access Journals (Sweden)

    Orit Itzhaki

    Full Text Available Vasculogenic mimicry (VM describes functional vascular channels composed only of tumor cells and its presence predicts poor prognosis in melanoma patients. Inhibition of this alternative vascularization pathway might be of clinical importance, especially as several anti-angiogenic therapies targeting endothelial cells are largely ineffective in melanoma. We show the presence of VM structures histologically in a series of human melanoma lesions and demonstrate that cell cultures derived from these lesions form tubes in 3D cultures ex vivo. We tested the ability of nicotinamide, the amide form of vitamin B3 (niacin, which acts as an epigenetic gene regulator through unique cellular pathways, to modify VM. Nicotinamide effectively inhibited the formation of VM structures and destroyed already formed ones, in a dose-dependent manner. Remarkably, VM formation capacity remained suppressed even one month after the complete withdrawal of Nicotimamid. The inhibitory effect of nicotinamide on VM formation could be at least partially explained by a nicotinamide-driven downregulation of vascular endothelial cadherin (VE-Cadherin, which is known to have a central role in VM. Further major changes in the expression profile of hundreds of genes, most of them clustered in biologically-relevant clusters, were observed. In addition, nicotinamide significantly inhibited melanoma cell proliferation, but had an opposite effect on their invasion capacity. Cell cycle analysis indicated moderate changes in apoptotic indices. Therefore, nicotinamide could be further used to unravel new biological mechanisms that drive VM and tumor progression. Targeting VM, especially in combination with anti-angiogenic strategies, is expected to be synergistic and might yield substantial anti neoplastic effects in a variety of malignancies.

  20. Avaliação ultrassonográfica da anomalia vascular portossistêmica em cão: relato de caso Ultrasonographic evaluation of portosystemic vascular anomaly in dog: a case report

    Directory of Open Access Journals (Sweden)

    M.A.R. Feliciano

    2009-06-01

    Full Text Available Relata-se a avaliação ultrassonográfica, com auxílio do Doppler em cores, da anomalia vascular portossistêmica em um cão da raça Poodle Toy, que apresentou edema pulmonar e alterações gastrintestinais. Ao exame ultrassonográfico, foram observados vasos portais dilatados e tortuosos. Esses resultados associados aos achados clínicos e laboratoriais permitem identificar a anomalia vascular portossistêmica no paciente.It was reported the ultrasonographic evaluation, assisted to Doppler color, of the portosystemic vascular anomaly in a Poodle Toy dog. The dog was referred with lung edema and gastrointestinal alterations. At ultrasonographic exam, portal vessels were extended and tortuous. These findings associated to clinical and laboratorial findings, allowed to identify the vascular portosystemic anomaly in the patient.

  1. Aggressive blood pressure reduction in patients at high vascular risk: is it dangerous?

    Directory of Open Access Journals (Sweden)

    Fabio Angeli

    2012-12-01

    Full Text Available Introduction The aim of this review was to summarize the current state of evidence regarding the optimal blood pressure goals in patients with high vascular risk. In particular, this review critically addresses the issue of the “J-curve” paradox – a hypothesis indicating that low treatment-induced blood pressure values are characterized by an increase, rather than a decrease, in the incidence of cardiovascular events. Materials and methods We reviewed evidence from studies published in peer-reviewed journals indexed in Medline, EMBASE and CINAHL that compared different BP goals. Results Post-hoc analyses of randomized trials specifically conducted to test the hypothesis of the “J-shaped curve” yielded conflicting results. However, trials directly comparing different blood pressure goals and meta-analyses showed that in-treatment blood pressure values below the usual goal of less than 140/90 mmHg improve outcomes in patients at increased vascular risk. Discussion The fear that an excessive reduction in blood pressure may be dangerous is inconsistent with the available data and probably conditioned by the adverse impact of other risk factors that may be more frequent in patients with low values of achieved blood pressure. The association between blood pressure reduction and cardiovascular risk seems to be linear and not J-shaped.

  2. Serial evaluation of retinal vascular changes in infants treated with intravitreal bevacizumab for aggressive posterior retinopathy of prematurity in zone I.

    Science.gov (United States)

    Padhi, T R; Das, T; Rath, S; Pradhan, L; Sutar, S; Panda, K G; Modi, R; Jalali, S

    2016-03-01

    PurposeTo evaluate the serial changes in retinal vasculature in infants treated with intravitreal bevacizumab (IVB) for aggressive posterior retinopathy of prematurity (APROP) in zone I.MethodsRetrospective analysis of serial changes in retinal vasculature after IVB in the seven eyes of four babies with APROP in zone I.ResultsThe initial regression, following IVB, was dramatic with reduction in vessel caliber and marked thinning and invisibility of the bridging shunts. Resurgent vascular development was very slow radially though there was continued abnormal vascular growth circumferentially. Common findings in all eyes were tangled vasculature and fine saw-toothed shunts. The variable findings were (1) new closely packed multilayered bridging shunts, long arching mature looking vessels, and finally a ridge at the periphery (n=3 eyes) at 52 weeks of postmenstrual age (PMA); (2) status quo at the stage of saw-toothed shunt and ridge in both eyes for a long time (n=2 eyes); and (3) multiple retinal hemorrhages within the vascularized retina and thick preretinal hemorrhage overlying the saw-toothed shunts and ridge that persisted for another 3 weeks and regressed 2 weeks after laser (n=1). The eyes that received bevacizumab alone (3) did not show any abnormal vascularization at 56 weeks of PMA or beyond.ConclusionsThe retinal vascularization following IVB was different than normal in terms of its time, speed, and morphology; few of these changes are first to be reported in the literature (Medline search) and warrants further studies. PMID:26584796

  3. Initial Results of Image-Guided Percutaneous Ablation as Second-Line Treatment for Symptomatic Vascular Anomalies

    International Nuclear Information System (INIS)

    PurposeThe purpose of this study was to determine the feasibility, safety, and early effectiveness of percutaneous image-guided ablation as second-line treatment for symptomatic soft-tissue vascular anomalies (VA).Materials and MethodsAn IRB-approved retrospective review was undertaken of all patients who underwent percutaneous image-guided ablation as second-line therapy for treatment of symptomatic soft-tissue VA during the period from 1/1/2008 to 5/20/2014. US/CT- or MRI-guided and monitored cryoablation or MRI-guided and monitored laser ablation was performed. Clinical follow-up began at one-month post-ablation.ResultsEight patients with nine torso or lower extremity VA were treated with US/CT (N = 4) or MRI-guided (N = 2) cryoablation or MRI-guided laser ablation (N = 5) for moderate to severe pain (N = 7) or diffuse bleeding secondary to hemangioma–thrombocytopenia syndrome (N = 1). The median maximal diameter was 9.0 cm (6.5–11.1 cm) and 2.5 cm (2.3–5.3 cm) for VA undergoing cryoablation and laser ablation, respectively. Seven VA were ablated in one session, one VA initially treated with MRI-guided cryoablation for severe pain was re-treated with MRI-guided laser ablation due to persistent moderate pain, and one VA was treated in a planned two-stage session due to large VA size. At an average follow-up of 19.8 months (range 2–62 months), 7 of 7 patients with painful VA reported symptomatic pain relief. There was no recurrence of bleeding at five-year post-ablation in the patient with hemangioma–thrombocytopenia syndrome. There were two minor complications and no major complications.ConclusionImage-guided percutaneous ablation is a feasible, safe, and effective second-line treatment option for symptomatic VA

  4. Initial Results of Image-Guided Percutaneous Ablation as Second-Line Treatment for Symptomatic Vascular Anomalies

    Energy Technology Data Exchange (ETDEWEB)

    Thompson, Scott M., E-mail: Thompson.scott@mayo.edu [Mayo Clinic, Mayo Graduate School, Mayo Medical School and the Mayo Clinic Medical Scientist Training Program, College of Medicine (United States); Callstrom, Matthew R., E-mail: callstrom.matthew@mayo.edu; McKusick, Michael A., E-mail: mckusick.michael@mayo.edu; Woodrum, David A., E-mail: woodrum.david@mayo.edu [Mayo Clinic, Department of Radiology, College of Medicine (United States)

    2015-10-15

    PurposeThe purpose of this study was to determine the feasibility, safety, and early effectiveness of percutaneous image-guided ablation as second-line treatment for symptomatic soft-tissue vascular anomalies (VA).Materials and MethodsAn IRB-approved retrospective review was undertaken of all patients who underwent percutaneous image-guided ablation as second-line therapy for treatment of symptomatic soft-tissue VA during the period from 1/1/2008 to 5/20/2014. US/CT- or MRI-guided and monitored cryoablation or MRI-guided and monitored laser ablation was performed. Clinical follow-up began at one-month post-ablation.ResultsEight patients with nine torso or lower extremity VA were treated with US/CT (N = 4) or MRI-guided (N = 2) cryoablation or MRI-guided laser ablation (N = 5) for moderate to severe pain (N = 7) or diffuse bleeding secondary to hemangioma–thrombocytopenia syndrome (N = 1). The median maximal diameter was 9.0 cm (6.5–11.1 cm) and 2.5 cm (2.3–5.3 cm) for VA undergoing cryoablation and laser ablation, respectively. Seven VA were ablated in one session, one VA initially treated with MRI-guided cryoablation for severe pain was re-treated with MRI-guided laser ablation due to persistent moderate pain, and one VA was treated in a planned two-stage session due to large VA size. At an average follow-up of 19.8 months (range 2–62 months), 7 of 7 patients with painful VA reported symptomatic pain relief. There was no recurrence of bleeding at five-year post-ablation in the patient with hemangioma–thrombocytopenia syndrome. There were two minor complications and no major complications.ConclusionImage-guided percutaneous ablation is a feasible, safe, and effective second-line treatment option for symptomatic VA.

  5. Successful laparoscopic distal gastrectomy with D2 lymph node dissection preserving the common hepatic artery branched from the left gastric artery for advanced gastric cancer with an Adachi type VI (group 26) vascular anomaly.

    Science.gov (United States)

    Goto, Hironobu; Yasuda, Takashi; Oshikiri, Taro; Imanishi, Tatsuya; Yamashita, Hironori; Oyama, Masato; Kakinoki, Keitaro; Ohara, Tadayuki; Sendo, Hiroyoshi; Fujino, Yasuhiro; Tominaga, Masahiro; Kakeji, Yoshihiro

    2016-12-01

    We report a case of successful laparoscopic distal gastrectomy with D2 lymph node dissection preserving the common hepatic artery branched from the left gastric artery for advanced gastric cancer with an Adachi type VI (group 26) vascular anomaly. A 76-year-old female patient was admitted with a diagnosis of advanced gastric cancer at the anterior wall to the lesser curvature of the antrum (cT3N0M0 cStage IIA). Dynamic computed tomography showed the ectopia of the common hepatic artery branched from the left gastric artery. We made a diagnosis of an Adachi type VI (group 26) vascular anomaly and performed the abovementioned operation. In this anomaly pattern, scrupulous attention is required to remove the suprapancreatic lymph nodes because the portal vein is located immediately dorsal to those lymph nodes and is at increased risk for the injury in this situation. The common hepatic artery is branched from the left gastric artery, and the hepatic perfusion from the superior mesenteric artery is not present in group 26. Planning to preserve the artery will improve safety when it is possible oncologically. There were no postoperative complications, and the patient was discharged 9 days after the operation. To our knowledge, the present case is the first reported case of a laparoscopic distal gastrectomy with D2 lymph node dissection with an Adachi type VI (group 26) vascular anomaly. Preoperative diagnostic imaging is very important to prevent surgical complications because the reliable identification of vascular anomaly during an operation is very difficult. PMID:27259578

  6. Imaging Pediatric Vascular Lesions

    Science.gov (United States)

    Nguyen, Tuyet A.; Krakowski, Andrew C.; Naheedy, John H.; Kruk, Peter G.

    2015-01-01

    Vascular anomalies are commonly encountered in pediatric and dermatology practices. Most of these lesions are benign and easy to diagnose based on history and clinical exam alone. However, in some cases the diagnosis may not be clear. This may be of particular concern given that vascular anomalies may occasionally be associated with an underlying syndrome, congenital disease, or serious, life-threatening condition. Defining the type of vascular lesion early and correctly is particularly important to determine the optimal approach to management and treatment of each patient. The care of pediatric patients often requires collaboration from a multitude of specialties including pediatrics, dermatology, plastic surgery, radiology, ophthalmology, and neurology. Although early characterization of vascular lesions is important, consensus guidelines regarding the evaluation and imaging of vascular anomalies does not exist to date. Here, the authors provide an overview of pediatric vascular lesions, current classification systems for characterizing these lesions, the various imaging modalities available, and recommendations for appropriate imaging evaluation. PMID:26705446

  7. Imaging Pediatric Vascular Lesions.

    Science.gov (United States)

    Nguyen, Tuyet A; Krakowski, Andrew C; Naheedy, John H; Kruk, Peter G; Friedlander, Sheila Fallon

    2015-12-01

    Vascular anomalies are commonly encountered in pediatric and dermatology practices. Most of these lesions are benign and easy to diagnose based on history and clinical exam alone. However, in some cases the diagnosis may not be clear. This may be of particular concern given that vascular anomalies may occasionally be associated with an underlying syndrome, congenital disease, or serious, life-threatening condition. Defining the type of vascular lesion early and correctly is particularly important to determine the optimal approach to management and treatment of each patient. The care of pediatric patients often requires collaboration from a multitude of specialties including pediatrics, dermatology, plastic surgery, radiology, ophthalmology, and neurology. Although early characterization of vascular lesions is important, consensus guidelines regarding the evaluation and imaging of vascular anomalies does not exist to date. Here, the authors provide an overview of pediatric vascular lesions, current classification systems for characterizing these lesions, the various imaging modalities available, and recommendations for appropriate imaging evaluation. PMID:26705446

  8. Pediatric central nervous system vascular malformations

    International Nuclear Information System (INIS)

    Pediatric central nervous system (CNS) vascular anomalies include lesions found only in the pediatric population and also the full gamut of vascular lesions found in adults. Pediatric-specific lesions discussed here include infantile hemangioma, vein of Galen malformation and dural sinus malformation. Some CNS vascular lesions that occur in adults, such as arteriovenous malformation, have somewhat distinct manifestations in children, and those are also discussed. Additionally, children with CNS vascular malformations often have associated broader vascular conditions, e.g., PHACES (posterior fossa anomalies, hemangioma, arterial anomalies, cardiac anomalies, eye anomalies and sternal anomalies), hereditary hemorrhagic telangiectasia, and capillary malformation-arteriovenous malformation syndrome (related to the RASA1 mutation). The treatment of pediatric CNS vascular malformations has greatly benefited from advances in endovascular therapy, including technical advances in adult interventional neuroradiology. Dramatic advances in therapy are expected to stem from increased understanding of the genetics and vascular biology that underlie pediatric CNS vascular malformations. (orig.)

  9. Pediatric central nervous system vascular malformations

    Energy Technology Data Exchange (ETDEWEB)

    Burch, Ezra A. [Brigham and Women' s Hospital, Department of Radiology, Boston, MA (United States); Orbach, Darren B. [Boston Children' s Hospital, Neurointerventional Radiology, Boston, MA (United States)

    2015-09-15

    Pediatric central nervous system (CNS) vascular anomalies include lesions found only in the pediatric population and also the full gamut of vascular lesions found in adults. Pediatric-specific lesions discussed here include infantile hemangioma, vein of Galen malformation and dural sinus malformation. Some CNS vascular lesions that occur in adults, such as arteriovenous malformation, have somewhat distinct manifestations in children, and those are also discussed. Additionally, children with CNS vascular malformations often have associated broader vascular conditions, e.g., PHACES (posterior fossa anomalies, hemangioma, arterial anomalies, cardiac anomalies, eye anomalies and sternal anomalies), hereditary hemorrhagic telangiectasia, and capillary malformation-arteriovenous malformation syndrome (related to the RASA1 mutation). The treatment of pediatric CNS vascular malformations has greatly benefited from advances in endovascular therapy, including technical advances in adult interventional neuroradiology. Dramatic advances in therapy are expected to stem from increased understanding of the genetics and vascular biology that underlie pediatric CNS vascular malformations. (orig.)

  10. Aggressive Behavior

    Science.gov (United States)

    ... Stages Listen Español Text Size Email Print Share Aggressive Behavior Page Content Article Body My child is sometimes ... type of behavior? The best way to prevent aggressive behavior is to give your child a stable, secure ...

  11. Aggressive Angiomyxoma

    OpenAIRE

    Padmavathy, L.; L Lakshmana Rao; M Dhana Lakshmi; N Sylvester

    2014-01-01

    Myxoid tumors are a heterogeneous group of lesions characterized by a marked abundance of extra cellular mucoid (myxoid) matrix. [1] The term aggressive emphasizes the often infiltrative nature of the tumor and its frequent association with recurrence. [2] A case of aggressive angiomyxoma arising from the vagina in a 55-year-old woman is reported for its rarity.

  12. Aggressive angiomyxoma.

    Science.gov (United States)

    Padmavathy, L; Rao, L Lakshmana; Lakshmi, M Dhana; Sylvester, N

    2014-04-01

    Myxoid tumors are a heterogeneous group of lesions characterized by a marked abundance of extra cellular mucoid (myxoid) matrix.[1] The term aggressive emphasizes the often infiltrative nature of the tumor and its frequent association with recurrence.[2] A case of aggressive angiomyxoma arising from the vagina in a 55-year-old woman is reported for its rarity. PMID:24860748

  13. Aggressive Angiomyxoma

    Directory of Open Access Journals (Sweden)

    L Padmavathy

    2014-01-01

    Full Text Available Myxoid tumors are a heterogeneous group of lesions characterized by a marked abundance of extra cellular mucoid (myxoid matrix. [1] The term aggressive emphasizes the often infiltrative nature of the tumor and its frequent association with recurrence. [2] A case of aggressive angiomyxoma arising from the vagina in a 55-year-old woman is reported for its rarity.

  14. Electronic Aggression

    Centers for Disease Control (CDC) Podcasts

    2007-11-20

    Aggression is no longer limited to the school yard. New forms of electronic media, such as blogs, instant messaging, chat rooms, email, text messaging, and the internet are providing new arenas for youth violence to occur.  Created: 11/20/2007 by National Center for Injury Prevention and Control, Division of Violence Prevention.   Date Released: 11/28/2007.

  15. Vascular Cures

    Science.gov (United States)

    ... our CEO Board of Directors Scientific Advisory Board History of Vascular Cures Impact Contact Us Vascular Disease What is Vascular Disease? Education and Awareness Vascular Diseases Abdominal Aortic Aneurysm Aortic ...

  16. Vascular anomalies associated with epilepsy - case report

    International Nuclear Information System (INIS)

    Epilepsy is a common neurological disorder in which the individual has recurrent seizures. These seizures occur when there is an imbalance in the electrical activity of the brain. The malfunction may be in a small area of the brain or spread to the entire brain. Epilepsy usually begins in childhood or adolescence. About 2.3 million people have seizures or epilepsy. (author)

  17. Biomarkers of aggression in dementia.

    Science.gov (United States)

    Gotovac, Kristina; Nikolac Perković, Matea; Pivac, Nela; Borovečki, Fran

    2016-08-01

    Dementia is a clinical syndrome defined by progressive global impairment of acquired cognitive abilities. It can be caused by a number of underlying conditions. The most common types of dementia are Alzheimer's disease (AD), frontotemporal dementia (FTD), vascular cognitive impairment (VCI) and dementia with Lewy bodies (DLB). Despite the fact that cognitive impairment is central to the dementia, noncognitive symptoms, most commonly described nowadays as neuropsychiatric symptoms (NPS) exist almost always at certain point of the illness. Aggression as one of the NPS represents danger both for patients and caregivers and the rate of aggression correlates with the loss of independence, cognitive decline and poor outcome. Therefore, biomarkers of aggression in dementia patients would be of a great importance. Studies have shown that different genetic factors, including monoamine signaling and processing, can be associated with various NPS including aggression. There have been significant and multiple neurotransmitter changes identified in the brains of patients with dementia and some of these changes have been involved in the etiology of NPS. Aggression specific changes have also been observed in neuropathological studies. The current consensus is that the best approach for development of such biomarkers may be incorporation of genetics (polymorphisms), neurobiology (neurotransmitters and neuropathology) and neuroimaging techniques. PMID:26952705

  18. Congenital vascular malformations in scintigraphic evaluation

    OpenAIRE

    Pilecki, Stanisław; Gierach, Marcin; Gierach, Joanna; Świętaszczyk, Cyprian; Junik, Roman; Lasek, Władysław

    2014-01-01

    Summary Background Congenital vascular malformations are tumour-like, non-neoplastic lesions caused by disorders of vascular tissue morphogenesis. They are characterised by a normal cell replacement cycle throughout all growth phases and do not undergo spontaneous involution. Here we present a scintigraphic image of familial congenital vascular malformations in two sisters. Material/Methods A 17-years-old young woman with a history of multiple hospitalisations for foci of vascular anomalies a...

  19. Situs anomalies on prenatal MRI

    International Nuclear Information System (INIS)

    Objective: Situs anomalies refer to an abnormal organ arrangement, which may be associated with severe errors of development. Due regard being given to prenatal magnetic resonance imaging (MRI) as an adjunct to ultrasonography (US), this study sought to demonstrate the in utero visualization of situs anomalies on MRI, compared to US. Materials and methods: This retrospective study included 12 fetuses with situs anomalies depicted on fetal MRI using prenatal US as a comparison modality. With an MRI standard protocol, the whole fetus was assessed for anomalies, with regard to the position and morphology of the following structures: heart; venous drainage and aorta; stomach and intestines; liver and gallbladder; and the presence and number of spleens. Results: Situs inversus totalis was found in 3/12 fetuses; situs inversus with levocardia in 1/12 fetuses; situs inversus abdominis in 2/12 fetuses; situs ambiguous with polysplenia in 3/12 fetuses, and with asplenia in 2/12 fetuses; and isolated dextrocardia in 1/12 fetuses. Congenital heart defects (CHDs), vascular anomalies, and intestinal malrotations were the most frequent associated malformations. In 5/12 cases, the US and MRI diagnoses were concordant. Compared to US, in 7/12 cases, additional MRI findings specified the situs anomaly, but CHDs were only partially visualized in six cases. Conclusions: Our initial MRI results demonstrate the visualization of situs anomalies and associated malformations in utero, which may provide important information for perinatal management. Using a standard protocol, MRI may identify additional findings, compared to US, which confirm and specify the situs anomaly, but, with limited MRI visualization of fetal CHDs.

  20. Progress of diagnosis and treatment in scarring, vascular anomalies and lymphedema%瘢痕、血管瘤和淋巴水肿研究和治疗进展

    Institute of Scientific and Technical Information of China (English)

    刘伟; 林晓曦; 刘宁飞

    2012-01-01

    Scar, vascular anomalies and lymphedema are the common diseases that are difficult to treat, which severely affect patients' psychological and physical fitness. Therefore> further defining the disease mechanism and improving the diagnosis and therapeutic efficiency are the important topics of this area. In this project, our group has: CDrevealed the role of keloid stem cells, drug resistance and GDF-9 differentiation in keloid development; ②established low dose chemotherapy of keloid with increased cure rate and reduced recurrence rate; ③established engineered epidermis \\v treat wound bed to inhibit scar formation; ④ established diagnosis and therapy system in infantile hemangioma; ⑤ established clinical classification of port wine stains; ⑥established diagnosis and therapy of venous malformations; ⑦established diagnosis and therapy methods for arterlovenous malformations; ⑧ preliminarily defined the molecular mechanism of lymphedema; ⑨established MRI diagnosis for lymphedema; ⑩development of specialized traditional Chinese medicine for lymphedema.%瘢痕、血管瘤和肢体淋巴水肿是整形外科领域的常见病和难治性疾病,具有较高的发病率,严重影响患者的身心健康.因此,进一步明确疾病的发病机制、提高疾病的诊断效率和治疗技术的创新一直是这一领域关注的重点.本课题组在相关领域的研究中取得以下进展:①阐述了病理性干细胞、耐药性和生长分化因子-9(GDF-9)差异表达在瘢痕疙瘩中的发病机制;②建立了低浓度化学药物瘢痕疙瘩治疗体系,显著提高治愈率和降低复发率;③建立了组织工程皮肤促进创面愈合、减少瘢痕形成的方法;④建立了婴幼儿血管瘤诊断与治疗体系;⑤建立了葡萄酒色斑的临床分类;⑥建立了静脉畸形的诊断和治疗体系;⑦建立了动静脉畸形的诊断和治疗体系;⑧初步阐明了炎性淋巴管生长的分子机制;⑨建立

  1. CONCEPT ANALYSIS: AGGRESSION

    OpenAIRE

    Liu, Jianghong

    2004-01-01

    The concept of aggression is important to nursing because further knowledge of aggression can help generate a better theoretical model to drive more effective intervention and prevention approaches. This paper outlines a conceptual analysis of aggression. First, the different forms of aggression are reviewed, including the clinical classification and the stimulus-based classification. Then the manifestations and measurement of aggression are described. Finally, the causes and consequences of ...

  2. What Is Aggressive Violence?

    Science.gov (United States)

    Singer, Dorothy G.; Luca, Wendy

    1985-01-01

    Responses to a questionnaire dealing with what constitutes aggressive violence on television indicate that health care providers tend to rate items describing acts on television as more aggressive than television writers, producers, and executives do. (MBR)

  3. Aggressive commercial practicies

    OpenAIRE

    Tomanová, Magdaléna

    2008-01-01

    Diploma thesis evaluates the effectiveness of legal instruments to prevent the use of aggressive commercial practices. Thesis is divided into two main chapters, the first is the protection against aggressive commercial practices in business to consumer market and the second part is dedicated to the protection against aggressive practices in the business to business market. Each section compares the European protection of aggressive commercial practices (and also through European legislation i...

  4. Aggressive Fibromatosis in Neck.

    OpenAIRE

    Namita Kabdwal; Sanjeev Bhagat; Saurabh Varshney; Sampan Singh Bist; Sarita Mishra; Bhavna Singh

    2013-01-01

    Aggressive fibromatosis (AF) is a locally aggressive infiltrative low-grade benign tumor that accounts for approximately less than 3% of all soft tissue tumors. In the head and neck region this tumor tends to be more aggressive and associated with significant morbidity. Aggressive surgery is a viable management option and may be successfully used as a single modality treatment, or in combination with radiotherapy. We report a rare case of AF in a 38 year old female, who presented with a painl...

  5. Aggression on Roadways

    OpenAIRE

    Novaco, Raymond W.

    1989-01-01

    Aggression and the automobile have had a long standing association, yet research on aggressive behavior has neglected the roadway context. This chapter reviews existing work which has included archival analysis, field interview studies, personality research, and field experiments. Among the recurrent themes have been the relationship between aggressivity in driving to accident liability and to violence in the larger social context. Validity issues in road aggression research are discussed, an...

  6. Research Paradigm of Displaced Aggression

    OpenAIRE

    Tanno, Syota

    2013-01-01

    A review of research paradigm of displaced aggression is presented. The author arranged the Japanese wording of displaced aggression, summarized the historical transition of research on displaced aggression, and reviewed research paradigm of displaced aggression.

  7. Chiral anomalies and differential geometry

    Energy Technology Data Exchange (ETDEWEB)

    Zumino, B.

    1983-10-01

    Some properties of chiral anomalies are described from a geometric point of view. Topics include chiral anomalies and differential forms, transformation properties of the anomalies, identification and use of the anomalies, and normalization of the anomalies. 22 references. (WHK)

  8. Baseline blood pressure, low- and high-density lipoproteins, and triglycerides and the risk of vascular events in the Stroke Prevention by Aggressive Reduction in Cholesterol Levels (SPARCL) trial

    DEFF Research Database (Denmark)

    Amarenco, Pierre; Goldstein, Larry B; Callahan, Alfred;

    2009-01-01

    OBJECTIVE: To explore the relative contributions of baseline systolic blood pressure (SBP) and diastolic blood pressure (DBP) and lipoproteins on the risk of recurrent stroke or first major cardiovascular event (MCVE) and their potential impact on the benefit of statin treatment. METHODS AND...... cholesterol (LDL-C) and high-density lipoprotein cholesterol (HDL-C), and triglyceride levels. After 4.9 years of follow-up, there were 575 primary end points (fatal and nonfatal stroke), including 491 ischemic strokes, and 740 MCVEs (stroke plus myocardial infarction and vascular death). Cox regression...

  9. Human periprostatic adipose tissue promotes prostate cancer aggressiveness in vitro

    OpenAIRE

    Ribeiro Ricardo; Monteiro Cátia; Cunha Virgínia; Oliveira Maria; Freitas Mariana; Fraga Avelino; Príncipe Paulo; Lobato Carlos; Lobo Francisco; Morais António; Silva Vítor; Sanches-Magalhães José; Oliveira Jorge; Pina Francisco; Mota-Pinto Anabela

    2012-01-01

    Abstract Background Obesity is associated with prostate cancer aggressiveness and mortality. The contribution of periprostatic adipose tissue, which is often infiltrated by malignant cells, to cancer progression is largely unknown. Thus, this study aimed to determine if periprostatic adipose tissue is linked with aggressive tumor biology in prostate cancer. Methods Supernatants of whole adipose tissue (explants) or stromal vascular fraction (SVF) from paired fat samples of periprostatic (PP) ...

  10. Early childhood aggression

    OpenAIRE

    Alink, Lenneke Rosalie Agnes

    2006-01-01

    In this thesis the development, stability, and correlates of early childhood aggression were investigated. The normative development was examined in a general population sample using questionnaires completed by the parents of 12-, 24-, and 36-month-old children and again one year later. Results showed an early childhood aggression curve, with increasing rates of aggression in the second year of life and decreasing rates in the fourth year. One-year stabilities were moderate for 12-month-olds ...

  11. A morpho-etiological description of congenital limb anomalies.

    Directory of Open Access Journals (Sweden)

    Tayel S

    2005-01-01

    Full Text Available Background: Limb anomalies rank behind congenital heart disease as the most common birth defects observed in infants. More than 50 classifications for limb anomalies based on morphology and osseous anatomy have been drafted over the past 150 years. The present work aims to provide a concise summary of the most common congenital limb anomalies on a morpho-etiological basis. Patients and Methods: In a retrospective study, 70 newborns with anomalies of the upper and/or lower limbs were ascertained through clinical examination, chromosomal analysis, skeletal surveys and other relevant investigations. Results: Fetal causes of limb anomalies represented 55.8% of the cases in the form of 9 cases (12.9% with chromosomal aberrations (trisomy 13, 18 and 21, duplication 13q and deletion 22q and 30 cases (42.9% with single gene disorders. An environmental etiology for limb anomalies was diagnosed in 11 cases (15.7% as amniotic band disruption, monozygotic twin with abnormal circulation, vascular disruption (Poland sequence, sirenomelia and general vascular disruption and an infant with a diabetic mother. Twenty cases (28.5% had limb anomalies as part of sporadic syndromes of unknown etiology. Conclusions: The morpho-etiological work-up of limb anomalies adopted in the present study is valuable for detecting the cause of the anomaly and is crucial for its prevention. Prevention can be achieved by proper genetic counseling, which includes recurrence risk estimation and prenatal diagnosis.

  12. Abdominal aortic surgery and renal anomalies

    Directory of Open Access Journals (Sweden)

    Ilić Nikola

    2011-01-01

    Full Text Available Introduction. Kidney anomalies present a challenge even for the most experienced vascular surgeon in the reconstruction of the aortoilliac segment. The most significant anomalies described in the surgery of the aortoilliac segment are a horse-shoe and ectopic kidney. Objective. The aim of this retrospective study was to analyze experience on 40 patients with renal anomalies, who underwent surgery of the aortoilliac segment and to determine attitudes on conventional surgical treatment. Methods. In the period from 1992 to 2009, at the Clinic for Vascular Surgery of the Clinical Centre of Belgrade we operated on 40 patients with renal anomalies and aortic disease (aneurysmatic and obstructive. The retrospective analysis involved standard epidemiological data of each patient (gender, age, risk factors for atherosclerosis, type of anomaly, type of aortic disease, presurgical parameter values of renal function, type of surgical approach (laparatomy or retroperitoneal approach, classification of the renal isthmus, reimplantation of renal arteries and perioperative morbidity and mortality. Results. Twenty patients were males In 30 (70% patients we diagnosed a horse-shoe kidney and in 10 (30% ectopic kidney. In the cases of ruptured aneurysm of the abdominal aorta the diagnosis was made by ultrasound findings. Pre-surgically, renal anomalies were confirmed in all patients, except in those with a ruptured aneurysm who underwent urgent surgery. In all patients we applied medial laparatomy, except in those with a thoracoabdominal aneurysm type IV, when the retroperitonal approach was necessary. On average the patients were under follow-up for 6.2 years (from 6 months to 17 years. Conclusion. Under our conditions, the so-called double clamp technique with the preservation of the kidney gave best results in the patients with renal anomalies and aortic disease.

  13. AGGRESSIVE FIBROMATOSIS OF BREAST: A RARE CASE REPORT

    Directory of Open Access Journals (Sweden)

    Vikrant

    2014-03-01

    Full Text Available Fibromatosis, a locally aggressive but non-metastasizing neoplastic proliferation of fibroblastic cells, commonly encountered in the abdominal wall and extra-abdominal sites but rarely occurs in the breast. Here we report a case of aggressive fibromatosis of breast, which presented as a palpable mass in the right breast of a 53-year-old female. The physical examination revealed a 12x10 cm sized ovoid mass in the right upper outer quadrant. Ultrasonogram demonstrated an 8x5 cm sized hypoechoic mass with peripheral increased vascularity on doppler imaging. Wide local excision was done and pathology revealed aggressive fibromatosis.

  14. Tracheobronchial Branching Anomalies

    Energy Technology Data Exchange (ETDEWEB)

    Hong, Min Ji; Kim, Young Tong; Jou, Sung Shick [Soonchunhyang University, Cheonan Hospital, Cheonan (Korea, Republic of); Park, A Young [Soonchunhyang University College of Medicine, Asan (Korea, Republic of)

    2010-04-15

    There are various congenital anomalies with respect to the number, length, diameter, and location of tracheobronchial branching patterns. The tracheobronchial anomalies are classified into two groups. The first one, anomalies of division, includes tracheal bronchus, cardiac bronchus, tracheal diverticulum, pulmonary isomerism, and minor variations. The second one, dysmorphic lung, includes lung agenesis-hypoplasia complex and lobar agenesis-aplasia complex

  15. Girls' Aggressive Behavior

    Science.gov (United States)

    Owens, Larry; Shute, Rosalyn; Slee, Phillip

    2004-01-01

    In contrast to boys' bullying behavior which is often overt and easily visible, girls' aggression is usually indirect and covert. Less research has been conducted on the types of bullying that girls usually engage in. Using focus groups composed of teenaged girls, Dr. Owens and colleagues examine the nature of teenage girls' indirect aggression.

  16. The perception of aggression

    NARCIS (Netherlands)

    Jansen, G; Dassen, T; Moorer, P

    1997-01-01

    Several academic and clinical disciplines are involved in clarifying the concept of aggression by formulating operational and descriptive definitions. In the present paper the validity of the definitions of aggression, reported by nurses in an earlier qualitative study, is examined, using a survey a

  17. Congenital anomalies of aortic arch: CT angiography

    Energy Technology Data Exchange (ETDEWEB)

    Moon, Yung; Kim, Yang Min; Kim, Tae Hoon; Kim, Mi Young [Sejong General hospial, Seoul (Korea, Republic of); Lee, Jae Young [Seoul National Univ. College of Medicine, Seoul (Korea, Republic of); Kim, Hyung Seok [Cheju Medical Center, Cheju (Korea, Republic of)

    2001-01-01

    Aortic arch anomalies result from the failure of an embryonic vascular structure to persists and regress in the usual manner during formation of the aortic arch. The anomalous aortic arch may encircle and compress the trachea and esophagus as a form of a vascular ring. The diagnosis of aortic arch anomaly and the recognition of airway compression are important because they are conditions which complicate the natural and surgical course of related diseases. CT can demonstrate the nature of anatomic structures such as thr treachea and esophagus not revealed by angiogrphy, simultaneosuly disclosing the relationship of stenotic airways and offending mediastinal vessels. Volumetric data acquisition by means of spiral CT enables three dimensional reconstruction, which can provide easy global understanding for the complex anatomy and spatial relationship of airway and cardiovascular structures. Three dimensional imaging is very useful for the physician and surgeon who are not accustomed to mentally reconstructing axial images, and can facilitate surgical planning.

  18. Parents’ Aggressive Influences and Children's Aggressive Problem Solutions with Peers

    OpenAIRE

    Duman, Sarah; Margolin, Gayla

    2007-01-01

    This study examined children's aggressive and assertive solutions to hypothetical peer scenarios in relation to parents’ responses to similar hypothetical social scenarios and parents’ actual marital aggression. The study included 118 9−10 year old children, and their mothers and fathers. Children's aggressive solutions correlated with same-sex parents’ actual marital aggression. For children with mothers who exhibit low actual marital aggression, mothers’ aggressive solutions to hypothetical...

  19. Vascular MR

    International Nuclear Information System (INIS)

    This project investigates cardiac gated gradient echo pulses sequences for vascular MR imaging. These pulse sequences have been used to acquire and display MR projection angiograms. The authors have applied these methods in two distinct populations of patients for evaluation and comparison with standard angiography. Twenty patients with abdominal aortic aneurysms, and 35 patients with aortoiliac atherosclerotic disease or peripheral vascular disease were investigated using this method and the results are presented

  20. Vascular Dementia

    OpenAIRE

    Maria Alekseyevna Cherdak; O. V. Uspenskaya

    2015-01-01

    Vascular dementia is one of the most common causes of dementia after Alzheimer's disease, causing around 15% of cases. However, unlike Alzheimer's disease, there are no licensed treatments for vascular dementia. Progress in the specialty has been difficult because of uncertainties over disease classification and diagnostic criteria, controversy over the exact nature of the relation between cerebrovascular pathology and cognitive impairment, and the paucity of identifiable tractable treatment ...

  1. Aggressive Attitudes Predict Aggressive Behavior in Middle School Students.

    Science.gov (United States)

    McConville, David W.; Cornell, Dewey G.

    2003-01-01

    This prospective study found that self-reported attitudes toward peer aggression among 403 middle school students were both internally consistent and stable over time (7 months). Aggressive attitudes were correlated with four outcome criteria for aggressive behavior: student self-report of peer aggression; peer and teacher nominations of bullying;…

  2. Aggression in Pretend Play and Aggressive Behavior in the Classroom

    Science.gov (United States)

    Fehr, Karla K.; Russ, Sandra W.

    2013-01-01

    Research Findings: Pretend play is an essential part of child development and adjustment. However, parents, teachers, and researchers debate the function of aggression in pretend play. Different models of aggression predict that the expression of aggression in play could either increase or decrease actual aggressive behavior. The current study…

  3. Conformal Anomalies in Hydrodynamics

    CERN Document Server

    Eling, Christopher; Theisen, Stefan; Yankielowicz, Shimon

    2013-01-01

    We study the effect of conformal anomalies on the hydrodynamic description of conformal field theories in four spacetime dimensions. We consider equilibrium curved backgrounds characterized by a time-like Killing vector and construct a local low energy effective action that captures the conformal anomalies. Using as a special background the Rindler spacetime we derive a formula for the effect of the anomaly on the hydrodynamic pressure.

  4. Familial Poland anomaly.

    OpenAIRE

    David, T J

    1982-01-01

    The Poland anomaly is usually a non-genetic malformation syndrome. This paper reports two second cousins who both had a typical left sided Poland anomaly, and this constitutes the first recorded case of this condition affecting more than one member of a family. Despite this, for the purposes of genetic counselling, the Poland anomaly can be regarded as a sporadic condition with an extremely low recurrence risk.

  5. Timing Anomalies Reloaded

    OpenAIRE

    Gebhard, Gernot

    2010-01-01

    Computing tight WCET bounds in the presence of timing anomalies - found in almost any modern hardware architecture - is a major challenge of timing analysis. In this paper, we renew the discussion about timing anomalies, demonstrating that even simple hardware architectures are prone to timing anomalies. We furthermore complete the list of timing-anomalous cache replacement policies, proving that the most-recently-used replacement policy (MRU) also exhibits a domino effect.

  6. Network Traffic Anomaly Detection

    OpenAIRE

    Huang, Hong; Al-Azzawi, Hussein; Brani, Hajar

    2014-01-01

    This paper presents a tutorial for network anomaly detection, focusing on non-signature-based approaches. Network traffic anomalies are unusual and significant changes in the traffic of a network. Networks play an important role in today's social and economic infrastructures. The security of the network becomes crucial, and network traffic anomaly detection constitutes an important part of network security. In this paper, we present three major approaches to non-signature-based network detect...

  7. Aggressive retinal astrocytoma associated with tuberous sclerosis

    Directory of Open Access Journals (Sweden)

    Tomida M

    2012-05-01

    Full Text Available Machiko Tomida,1 Yoshinori Mitamura,1 Takashi Katome,1 Hiroshi Eguchi,1 Takeshi Naito,1 Takayuki Harada21Department of Ophthalmology, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, 2Visual Research Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, JapanAbstract: We report the case of a patient with an aggressive retinal astrocytoma accompanied with macular edema and neovascular vessels, who was initially treated with intravitreal bevacizumab injections. A 24-year-old male presented to our clinic complaining of visual disturbance in his right eye. At 8 years of age, he had been diagnosed as having tuberous sclerosis complex. Fundus examination demonstrated a retinal tumor accompanied with marked neovascular vessels on the surface, retinal hemorrhage, and macular edema. After six monthly intravitreal bevacizumab injections, fundus examination demonstrated marked regression of the macular edema and neovascular vessels. Two months later, a vitreous hemorrhage developed which necessitated pars plana vitrectomy. After additional intravitreal bevacizumab injection for preventing intraoperative bleeding, vitrectomy with endophotocoagulation for the tumor was performed. The vitreous sample was obtained during vitrectomy, and we measured the vascular endothelial growth factor concentration by enzyme-linked immunosorbent assay. The surgically removed epiretinal neovascular membrane and biopsied retinal tumor expressed vascular endothelial growth factor, although several intravitreal bevacizumab injections led to a vitreous vascular endothelial growth factor concentration of undetectable levels. The clinical course and immunohistochemical analyses indicate that intravitreal bevacizumab monotherapy may have been insufficient to treat the aggressive retinal astrocytoma with macular edema and that laser photocoagulation or photodynamic therapy for the tumor should be considered following intravitreal

  8. Evaluation of vascular rings with digital subtraction angiography.

    Science.gov (United States)

    Tonkin, I L; Gold, R E; Moser, D; Laster, R E

    1984-06-01

    Seven patients with vascular rings were evaluated over a 2-year period with intravenous digital subtraction angiography (DSA), which was compared with screen-film aortography or cineangiography. The seven patients were also evaluated with barium esophagography. Six of the seven DSA images were totally diagnostic and one study was only partly diagnostic. Six of the seven vascular anomalies were confirmed surgically. DSA is suggested as an alternative to arteriography in evaluating patients with suspected vascular rings. PMID:6372419

  9. Concentration is more important than dose when using intralesional Pingyangmycin injection for treatment of vascular malformations

    Institute of Scientific and Technical Information of China (English)

    周琴; 郑家伟; 杨秀娟; 王延安

    2010-01-01

    @@ Vascular anomalies represent a wide spectrum of pathology with different clinico-pathological characteristics.Approximately 60% of them occur in the head and neck region.A variety of therapeutic modalities have been reported to manage vascular anomalies over the years,including surgical resection,laser therapy and sclerotherapy,etc.Bleomycin has been successfully used in intralesional injection treatment of cystic hydromas and haemangiomas,based specifically on a high sclerosing effect on vascular endothelium[1].

  10. Competing Orders and Anomalies

    Science.gov (United States)

    Moon, Eun-Gook

    2016-08-01

    A conservation law is one of the most fundamental properties in nature, but a certain class of conservation “laws” could be spoiled by intrinsic quantum mechanical effects, so-called quantum anomalies. Profound properties of the anomalies have deepened our understanding in quantum many body systems. Here, we investigate quantum anomaly effects in quantum phase transitions between competing orders and striking consequences of their presence. We explicitly calculate topological nature of anomalies of non-linear sigma models (NLSMs) with the Wess-Zumino-Witten (WZW) terms. The non-perturbative nature is directly related with the ’t Hooft anomaly matching condition: anomalies are conserved in renormalization group flow. By applying the matching condition, we show massless excitations are enforced by the anomalies in a whole phase diagram in sharp contrast to the case of the Landau-Ginzburg-Wilson theory which only has massive excitations in symmetric phases. Furthermore, we find non-perturbative criteria to characterize quantum phase transitions between competing orders. For example, in 4D, we show the two competing order parameter theories, CP(1) and the NLSM with WZW, describe different universality class. Physical realizations and experimental implication of the anomalies are also discussed.

  11. Anomalies and topology

    International Nuclear Information System (INIS)

    The lectures given cover the topological effects in gauge field theories, fermionic chiral anomalies, and some relationships between the two. Gauge field theories in three and four space-time dimensions are considered. Topological terms as external U(1) functional gauge potential connections in field space are discussed. Both the structure and physical impact of anomalies are described. 17 refs

  12. Anomalies from Immersions

    CERN Document Server

    Ospina, J F

    2001-01-01

    Two forms of anomalies for chiral spinors living on submanifolds of the spacetime are obtained from the integrality theorem for immersions. The first form of the chiral anomaly is the usual for chiral spinors living on D-brane and O-plane intersections, the second form is exotic.

  13. What Is Vascular Disease?

    Science.gov (United States)

    ... our CEO Board of Directors Scientific Advisory Board History of Vascular Cures Impact Contact Us Vascular Disease What is Vascular Disease? Education and Awareness Vascular Diseases Abdominal Aortic Aneurysm Aortic ...

  14. Diabetes and Vascular Disease

    Science.gov (United States)

    ... our CEO Board of Directors Scientific Advisory Board History of Vascular Cures Impact Contact Us Vascular Disease What is Vascular Disease? Education and Awareness Vascular Diseases Abdominal Aortic Aneurysm Aortic ...

  15. Individual strategies of aggressive and non-aggressive male mice in encounters with trained aggressive residents

    OpenAIRE

    Benus, Rensina F.; Koolhaas, Jaap M.; Oortmerssen, Geert A. van

    1992-01-01

    To determine whether individual differences in offensive behaviour are related to differences in defensive behaviour, the responses of male wild house mice, Mus domesticus, of an aggressive and a non-aggressive line to defeat by physically stronger residents were analysed. Individuals of the aggressive line engaged in more flight behaviour, whereas the males of the non-aggressive line predominantly showed immobility. The higher flight tendency of the aggressive intruders provoked more attacks...

  16. Anomalies on orbifolds

    Energy Technology Data Exchange (ETDEWEB)

    Arkani-Hamed, Nima; Cohen, Andrew G.; Georgi, Howard

    2001-03-16

    We discuss the form of the chiral anomaly on an S1/Z2 orbifold with chiral boundary conditions. We find that the 4-divergence of the higher-dimensional current evaluated at a given point in the extra dimension is proportional to the probability of finding the chiral zero mode there. Nevertheless the anomaly, appropriately defined as the five dimensional divergence of the current, lives entirely on the orbifold fixed planes and is independent of the shape of the zero mode. Therefore long distance four dimensional anomaly cancellation ensures the consistency of the higher dimensional orbifold theory.

  17. Theoretically Optimal Distributed Anomaly Detection

    Data.gov (United States)

    National Aeronautics and Space Administration — A novel general framework for distributed anomaly detection with theoretical performance guarantees is proposed. Our algorithmic approach combines existing anomaly...

  18. Neuroimaging and Aggression.

    Science.gov (United States)

    Mills, Shari; Raine, Adrian

    1994-01-01

    Brain imaging research allows direct assessment of structural and functional brain abnormalities, and thereby provides an improved methodology for studying neurobiological factors predisposing to violent and aggressive behavior. This paper reviews 20 brain imaging studies using four different types of neuroimaging techniques that were conducted in…

  19. Early childhood aggression

    NARCIS (Netherlands)

    Alink, Lenneke Rosalie Agnes

    2006-01-01

    In this thesis the development, stability, and correlates of early childhood aggression were investigated. The normative development was examined in a general population sample using questionnaires completed by the parents of 12-, 24-, and 36-month-old children and again one year later. Results show

  20. Anonymity, Deindividuation and Aggression.

    Science.gov (United States)

    Baron, Robert S.

    Several writers suggest that reducing one's sense of individuality reduces social restraints. The author suggests that the effect of uniformity of appearance on aggression is unclear when anonymity is held constant. This poses a problem of interpretation given that a distinction must be made between lack of individuality and anonymity. One must…

  1. Relational Aggression among Students

    Science.gov (United States)

    Young, Ellie L.; Nelson, David A.; Hottle, America B.; Warburton, Brittney; Young, Bryan K.

    2011-01-01

    "Relational aggression" refers to harm within relationships caused by covert bullying or manipulative behavior. Examples include isolating a youth from his or her group of friends (social exclusion), threatening to stop talking to a friend (the silent treatment), or spreading gossip and rumors by email. This type of bullying tends to be…

  2. Witz, Lust und Aggression

    DEFF Research Database (Denmark)

    Rösing, Lilian Munk

    2014-01-01

    Artiklen beskæftiger sig med forholdet mellem vits, lyst og aggression med udgangspunkt i lysten ved aggressiv litterær humor, eksemplificeret ved tekststeder fra Shakespeares Hamlet. Der argumenteres for, at aggressionen eller angrebet er et fælles centralt aspekt ved Sigmund Freuds og Friedrich...

  3. Nutrition, neurotoxicants & aggressive behaviour

    NARCIS (Netherlands)

    Zaalberg, A.

    2015-01-01

    Nutrition, neurotoxicants and aggressive behaviour Antisocial behaviour, such as violence, is explained not only by the social environment, as was long believed. Also nutrients and neurotoxicants might play a role. Whether this is the case was studied in this thesis. In two empirical studies possibl

  4. Parents' Aggressive Influences and Children's Aggressive Problem Solutions with Peers

    Science.gov (United States)

    Duman, Sarah; Margolin, Gayla

    2007-01-01

    This study examined children's aggressive and assertive solutions to hypothetical peer scenarios in relation to parents' responses to similar hypothetical social scenarios and parents' actual marital aggression. The study included 118 children ages 9 to 10 years old and their mothers and fathers. Children's aggressive solutions correlated with…

  5. Relational Aggression and Physical Aggression among Adolescent Cook Islands Students

    Science.gov (United States)

    Page, Angela; Smith, Lisa F.

    2016-01-01

    Both physical and relational aggression are characterised by the intent to harm another. Physical aggression includes direct behaviours such as hitting or kicking; relational aggression involves behaviours designed to damage relationships, such as excluding others, spreading rumours, and delivering threats and verbal abuse. This study extended…

  6. Learning about Poland Anomaly

    Science.gov (United States)

    ... performed too early, while the individual is growing, asymmetry can result or be made greater than before. ... Anomaly About.com- Poland Syndrome [rarediseases.about.com] Information about Poland syndrome produced by Mary Kugler, M.S. ...

  7. Anomalies and tadpoles

    International Nuclear Information System (INIS)

    We show that massless RR tadpoles in vacuum configurations with open and unoriented strings are always related to anomalies. RR tadpoles arising from sectors of the internal SCFT with non-vanishing Witten index are in one-to-one correspondence with conventional irreducible anomalies. The anomalous content of the remaining RR tadpoles can be disclosed by considering anomalous amplitudes with higher numbers of external legs. We then provide an explicit parametrization of the anomaly polynomial in terms of the boundary reflection coefficients, i.e. one-point functions of massless RR fields on the disk. After factorization of the reducible anomaly, we extract the relevant WZ couplings in the effective lagrangians. (author)

  8. Anomaly Detection in Sequences

    Data.gov (United States)

    National Aeronautics and Space Administration — We present a set of novel algorithms which we call sequenceMiner, that detect and characterize anomalies in large sets of high-dimensional symbol sequences that...

  9. Skyrmions and anomalies

    International Nuclear Information System (INIS)

    The author summarizes the works presented at the meeting on skyrmions and anomalies. He divides the principal issues of this workshop into five categories: QCD effective lagrangians, chiral bags and the Cheshire cat principle, strangeness problem, phenomenology, mathematical structure

  10. Neutrino anomalies without oscillations

    Indian Academy of Sciences (India)

    Sandip Pakvasa

    2000-01-01

    I review explanations for the three neutrino anomalies (solar, atmospheric and LSND) which go beyond the `conventional' neutrino oscillations induced by mass-mixing. Several of these require non-zero neutrino masses as well.

  11. Anomalies and entanglement entropy

    OpenAIRE

    Nishioka, Tatsuma; Yarom, Amos(Department of Physics, Technion, Haifa, 32000, Israel)

    2016-01-01

    We initiate a systematic study of entanglement and Renyi entropies in the presence of gauge and gravitational anomalies in even-dimensional quantum field theories. We argue that the mixed and gravitational anomalies are sensitive to boosts and obtain a closed form expression for their behavior under such transformations. Explicit constructions exhibiting the dependence of entanglement entropy on boosts is provided for theories on spacetimes with non-trivial magnetic fluxes and (or) non-vanish...

  12. Congenital laryngeal anomalies,

    OpenAIRE

    Rutter, Michael J.

    2014-01-01

    Introduction: It is essential for clinicians to understand issues relevant to the airway management of infants and to be cognizant of the fact that infants with congenital laryngeal anomalies are at particular risk for an unstable airway. Objectives: To familiarize clinicians with issues relevant to the airway management of infants and to present a succinct description of the diagnosis and management of an array of congenital laryngeal anomalies. Methods: Revision article, in which the ma...

  13. The Pioneer Anomaly

    CERN Document Server

    de Diego, Jose A

    2008-01-01

    Analysis of the radio-metric data from Pioneer 10 and 11 spacecrafts has indicated the presence of an unmodeled acceleration starting at 20 AU, which has become known as the Pioneer anomaly. The nature of this acceleration is uncertain. In this paper we give a description of the effect and review some relevant mechanisms proposed to explain the observed anomaly. We also discuss on some future projects to investigate this phenomenon.

  14. Anomalies and gravity

    CERN Document Server

    Mielke, E W

    2006-01-01

    Anomalies in Yang-Mills type gauge theories of gravity are reviewed. Particular attention is paid to the relation between the Dirac spin, the axial current j_5 and the non-covariant gauge spin C. Using diagrammatic techniques, we show that only generalizations of the U(1)- Pontrjagin four--form F^ F= dC arise in the chiral anomaly, even when coupled to gravity. Implications for Ashtekar's canonical approach to quantum gravity are discussed.

  15. Anomalies and gravity

    International Nuclear Information System (INIS)

    Anomalies in Yang-Mills type gauge theories of gravity are reviewed. Particular attention is paid to the relation between the Dirac spin, the axial current j5 and the non-covariant gauge spin C. Using diagrammatic techniques, we show that only generalizations of the U(1)- Pontrjagin four-form F and F = dC arise in the chiral anomaly, even when coupled to gravity. Implications for Ashtekar's canonical approach to quantum gravity are discussed

  16. Volume anomaly in ferrimagnetism

    OpenAIRE

    Pascard, H.; Globus, A.

    1981-01-01

    The volume anomaly ΔV/V due to the magnetic energy corresponding to the exchange interactions is experimentally determined for YIG. The experimental values (from 77 K to Tc) agree with the values deduced from the theoretical expression based on the Néel's theories of volume anomaly and of ferrimagnetism. These results are compared with those obtained by other authors on ferromagnetic and antiferromagnetic materials with localized magnetic moments : a reduced curve is obtained.

  17. Anomalies and Entanglement Entropy

    CERN Document Server

    Nishioka, Tatsuma

    2015-01-01

    We initiate a systematic study of entanglement and Renyi entropies in the presence of gauge and gravitational anomalies in even-dimensional quantum field theories. We argue that the mixed and gravitational anomalies are sensitive to boosts and obtain a closed form expression for their behavior under such transformations. Explicit constructions exhibiting the dependence of entanglement entropy on boosts is provided for theories on spacetimes with non-trivial magnetic fluxes and (or) non-vanishing Pontryagin classes.

  18. Coping with Agitation and Aggression

    Science.gov (United States)

    Alzheimer ’s Caregiving Tips Coping with Agitation and Aggression People with Alzheimer’s disease may become agitated or aggressive as the disease gets worse. Agitation means that a person is restless or worried. ...

  19. The Holographic Supercurrent Anomaly

    CERN Document Server

    Chaichian, Masud

    2004-01-01

    The \\gamma-trace anomaly of supersymmetry current in a supersymmetric gauge theory shares a superconformal anomaly multiplet with the chiral R-symmetry anomaly and the Weyl anomaly, and its holographic reproduction is a valuable test to the AdS/CFT correspondence conjecture. We investigate how the \\gamma-trace anomaly of the supersymmetry current of {\\cal N}=1 four-dimensional supersymmetric gauge theory in an {\\cal N}=1 conformal supergravity background can be extracted out from the ${\\cal N}=2$ gauged supergravity in five dimensions. It is shown that the reproduction of this super-Weyl anomaly originates from the following two facts: First the {\\cal N}=2 bulk supersymmetry transformation converts into {\\cal N}=1 superconformal transformation on the boundary, which consists of {\\cal N}=1 supersymmetry transformation and special conformal supersymmetry (or super-Weyl) transformation; second the supersymmetry variation of the bulk action of five-dimensional gauged supergravity is a total derivative. The non-co...

  20. The Holographic Weyl anomaly

    CERN Document Server

    Henningson, M; Henningson, Mans; Skenderis, Kostas

    1998-01-01

    We calculate the Weyl anomaly for conformal field theories that can be described via the adS/CFT correspondence. This entails regularizing the gravitational part of the corresponding supergravity action in a manner consistent with general covariance. Up to a constant, the anomaly only depends on the dimension d of the manifold on which the conformal field theory is defined. We present concrete expressions for the anomaly in the physically relevant cases d = 2, 4 and 6. In d = 2 we find for the central charge c = 3 l/ 2 G_N in agreement with considerations based on the asymptotic symmetry algebra of adS_3. In d = 4 the anomaly agrees precisely with that of the corresponding N = 4 superconformal SU(N) gauge theory. The result in d = 6 provides new information for the (0, 2) theory, since its Weyl anomaly has not been computed previously. The anomaly in this case grows as N^3, where N is the number of coincident M5 branes, and it vanishes for a Ricci-flat background.

  1. Tbx1 regulates brain vascularization.

    Science.gov (United States)

    Cioffi, Sara; Martucciello, Stefania; Fulcoli, Filomena Gabriella; Bilio, Marchesa; Ferrentino, Rosa; Nusco, Edoardo; Illingworth, Elizabeth

    2014-01-01

    The transcription factor TBX1 is the major gene involved in 22q11.2 deletion syndrome (22q11.2DS). Using mouse models of these diseases, we have previously shown that TBX1 activates VEGFR3 in endothelial cells (EC), and that this interaction is critical for the development of the lymphatic vasculature. In this study, we show that TBX1 regulates brain angiogenesis. Using loss-of-function genetics and molecular approaches, we show that TBX1 regulates the VEGFR3 and DLL4 genes in brain ECs. In mice, loss of TBX1 causes global brain vascular defects, comprising brain vessel hyperplasia, enhanced angiogenic sprouting and vessel network disorganization. This phenotype is recapitulated in EC-specific Tbx1 conditional mutants and in an EC-only 3-dimensional cell culture system (matrigel), indicating that the brain vascular phenotype is cell autonomous. Furthermore, EC-specific conditional Tbx1 mutants have poorly perfused brain vessels and brain hypoxia, indicating that the expanded vascular network is functionally impaired. In EC-matrigel cultures, a Notch1 agonist is able to partially rescue microtubule hyperbranching induced by TBX1 knockdown. Thus, we have identified a novel transcriptional regulator of angiogenesis that exerts its effect in brain by negatively regulating angiogenesis through the DLL4/Notch1-VEGFR3 regulatory axis. Given the similarity of the phenotypic consequences of TBX1 mutation in humans and mice, this unexpected role of TBX1 in murine brain vascularization should stimulate clinicians to search for brain microvascular anomalies in 22q11.2DS patients and to evaluate whether some of the anatomical and functional brain anomalies in patients may have a microvascular origin. PMID:23945394

  2. Prediction of Major Vascular Events after Stroke

    DEFF Research Database (Denmark)

    Ovbiagele, Bruce; Goldstein, Larry B.; Amarenco, Pierre;

    2014-01-01

    BACKGROUND: Identifying patients with recent stroke or transient ischemic attack (TIA) at high risk of major vascular events (MVEs; stroke, myocardial infarction, or vascular death) may help optimize the intensity of secondary preventive interventions. We evaluated the relationships between the...... baseline Framingham Coronary Risk Score (FCRS) and a novel risk prediction model and with the occurrence of MVEs after stroke or TIA in subjects enrolled in the Stroke Prevention by Aggressive Reduction in Cholesterol Level (SPARCL) trial. METHODS: Data from the 4731 subjects enrolled in the SPARCL study...

  3. Children's normative beliefs about aggression and aggressive behavior.

    Science.gov (United States)

    Huesmann, L R; Guerra, N G

    1997-02-01

    Normative beliefs have been defined as self-regulating beliefs about the appropriateness of social behaviors. In 2 studies the authors revised their scale for assessing normative beliefs about aggression, found that it is reliable and valid for use with elementary school children, and investigated the longitudinal relation between normative beliefs about aggression and aggressive behavior in a large sample of elementary school children living in poor urban neighborhoods. Using data obtained in 2 waves of observations 1 year apart, the authors found that children tended to approve more of aggression as they grew older and that this increase appeared to be correlated with increases in aggressive behavior. More important, although individual differences in aggressive behavior predicted subsequent differences in normative beliefs in younger children, individual differences in aggressive behavior were predicted by preceding differences in normative beliefs in older children. PMID:9107008

  4. Radiotherapy for aggressive fibromatosis

    International Nuclear Information System (INIS)

    Purpose/Objective: To evaluate local control with radiotherapy for aggressive fibromatosis. Materials and Methods: Fifty-three patients with histologically confirmed aggressive fibromatosis were treated with radiotherapy at the University of Florida between March 1975 and June 1992. The minimum length of follow-up was 2 years; 88% of patients had follow-up for at least 5 years. Thirty-nine patients had lesions in an extremity and 14 patients had lesions in the trunk. Twenty-nine patients were treated for gross disease. Patients were treated with total doses between 35 Gy and 70 Gy; 83% of patients received 50 Gy to 60 Gy. Results: Local control was achieved in 23 of 29 patients (79%) treated for postoperative microscopic residual disease. Local control was achieved in 21 of 24 patients (88%) treated for gross disease; gross disease was controlled in 8 of 8 patients with previously untreated lesions, and in 13 of 16 patients treated for postoperative gross residual and recurrent disease. Overall, aggressive fibromatosis was locally controlled in 83% of treated patients. All 9 treatment failures occurred with extremity lesions 4 to 68 months after initiation of treatment. Of the 9 recurrences, 4 were out-of-field, 3 were in-field, and 4 occurred at the margin of the irradiated field. Salvage was successful in 8 of 9 patients in whom salvage was attempted with surgery alone or combined with postoperative radiotherapy. A functional limb was maintained in 38 of 39 patients with extremity or limb girdle lesions. The most serious complication of treatment was pathologic fracture, which occurred in 3 of 53 treated patients; all 3 fractures healed with conservative management. Conclusion: Radiotherapy is a valuable adjunct to surgery in the management of aggressive fibromatosis and can be used alone in patients with unresectable or inoperable disease

  5. Nutrition, neurotoxicants & aggressive behaviour

    OpenAIRE

    Zaalberg, A.

    2015-01-01

    Nutrition, neurotoxicants and aggressive behaviour Antisocial behaviour, such as violence, is explained not only by the social environment, as was long believed. Also nutrients and neurotoxicants might play a role. Whether this is the case was studied in this thesis. In two empirical studies possible relations between nutrients and behaviour were investigated. In the first study, levels of nutrients in blood samples of forensic psychiatric patients were measured. Low levels of omega-3 fatty a...

  6. Individual strategies of aggressive and non-aggressive male mice in encounters with trained aggressive residents

    NARCIS (Netherlands)

    Benus, Rensina F.; Koolhaas, Jaap M.; Oortmerssen, Geert A. van

    1992-01-01

    To determine whether individual differences in offensive behaviour are related to differences in defensive behaviour, the responses of male wild house mice, Mus domesticus, of an aggressive and a non-aggressive line to defeat by physically stronger residents were analysed. Individuals of the aggress

  7. Motives in Sexual Aggression: The Chinese Context.

    Science.gov (United States)

    Tang, Catherine So-Kum; And Others

    1993-01-01

    Compared sexual and aggressive motives for sexual aggression in Chinese college students. Male undergraduates (N=146) completed self-report measures. Results suggest that sex guilt and aggressive guilt acted as inhibitors for their respective drives and sexual aggression resulted from aggressive, rather than sexual, motives. Sexual aggression may…

  8. Anomaly Extraction in Networks

    Directory of Open Access Journals (Sweden)

    Mr. Naushad Mujawar

    2014-03-01

    Full Text Available The application detects anomaly in network using techniques like histogram, cloning voting, filtering. To extract anomalous flows, one could build a model describing normal flow characteristics and use the model to identify deviating flows. We can compare flows of packets on network with previous flows, like new flows that were not previously observed or flows with significant increase/decrease in their volume. Identify an anomalous flow that combines and consolidates information from multiple histogram-based anomaly detectors [1] [4] [8]. Compared to other possible approaches. Build a histogram based detector that (i applies histogram cloning[1][4], i.e., maintains multiple randomized histograms to obtain additional views of network traffic[3]; and (ii uses the Kullback-Leibler (KL distance to detect anomalies.

  9. Society for Vascular Medicine

    Science.gov (United States)

    ... and find out! Patient Information Pages from Vascular Medicine August 2016 The Vascular Laboratory More info for ... Learn more. Trending Now: Hot Topics in Vascular Medicine Video Series Fibromuscular Dysplasia (FMD) with Drs. Jeffrey ...

  10. Congenital laryngeal anomalies,

    Directory of Open Access Journals (Sweden)

    Michael J. Rutter

    2014-12-01

    Full Text Available Introduction: It is essential for clinicians to understand issues relevant to the airway management of infants and to be cognizant of the fact that infants with congenital laryngeal anomalies are at particular risk for an unstable airway. Objectives: To familiarize clinicians with issues relevant to the airway management of infants and to present a succinct description of the diagnosis and management of an array of congenital laryngeal anomalies. Methods: Revision article, in which the main aspects concerning airway management of infants will be analyzed. Conclusions: It is critical for clinicians to understand issues relevant to the airway management of infants.

  11. Vascular mimicry in cultured head and neck tumour cell lines

    OpenAIRE

    Upile, Tahwinder; Jerjes, Waseem; Radhi, Hani; Al-Khawalde, Mohammed; Kafas, Panagiotis; Nouraei, Seyed; Sudhoff, Holger

    2011-01-01

    Introduction Vascuologenesis is the de novo establishment of blood vessels and vascular networks from mesoderm-derived endothelial cell precursors (angioblasts). Recently a novel mechanism, by which some genetically deregulated and aggressive tumour cells generate "micro-vascular" channels without the participation of endothelial cells and independent of angiogenesis, has been proposed. This has been termed "vasculogenic mimicry" and has implications beyond angiogenesis and adds another layer...

  12. Aggressive HIV-1?

    OpenAIRE

    van der Hoek Lia; de Ronde Anthony; Berkhout Ben

    2005-01-01

    Abstract New York City health officials announced on February 11, 2005 that a patient rapidly developed full-blown AIDS shortly after being diagnosed with a rare, drug-resistant strain of HIV-1. The New York City Department of Health issued an alert to all hospitals and doctors and a press conference was held to announce the emergence of an aggressive HIV-1 strain that may be difficult to treat and that appears to trigger rapid progression to AIDS. Is the panic justified?

  13. Cohomology and Topological Anomalies

    CERN Document Server

    Ekstrand, C

    2001-01-01

    The chiral anomaly can be considered as an object defined either on the space of gauge potentials or on the orbit space. We will discuss the relation between the two descriptions. We will also relate to the cohomology of the group of gauge transformations.

  14. Cohomology and Topological Anomalies

    OpenAIRE

    Ekstrand, Christian

    2000-01-01

    The chiral anomaly can be considered as an object defined either on the space of gauge potentials or on the orbit space. We will discuss the relation between the two descriptions. We will also relate to the cohomology of the group of gauge transformations.

  15. Bolivian Bouguer Anomaly Grid

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — A 1 kilometer Bouguer anomaly grid for the country of Bolivia.Number of columns is 550 and number of rows is 900. The order of the data is from the lower left to...

  16. Anomaly Busters II

    International Nuclear Information System (INIS)

    The anomaly busters had struck on the first day of the Kyoto meeting with Yoji Totsuka of Tokyo speaking on baryon number nonjjonservation and 'related topics'. The unstable proton is a vital test of grand unified pictures pulling together the electroweak and quark/gluon forces in a single field theory

  17. Anomalies and elliptic operators

    International Nuclear Information System (INIS)

    The coefficients of asymptotic expansion Spexp(-tA) at t→0 are calculated for the quantum field theory operators. It is shown how to apply these results to the calculations of axial and conformal anomalies, the charge renormalization in gauge theory and effective action in twodimensional electrodynamics

  18. North Atlantic Temperature Anomaly

    OpenAIRE

    Vukcevic, M.A.

    2009-01-01

    The author postulates the existence of a high correlation between North Atlantic Temperature Anomaly and the variations of magnetic field over the Hudson Bay region. Post-glacial uplift and convection in the underlying mantle uplift (as reflected in changes of the area's magnetic intensity) are making significant contribution to the Atlantic basin climate change.

  19. The nature of human aggression.

    Science.gov (United States)

    Archer, John

    2009-01-01

    Human aggression is viewed from four explanatory perspectives, derived from the ethological tradition. The first consists of its adaptive value, which can be seen throughout the animal kingdom, involving resource competition and protection of the self and offspring, which has been viewed from a cost-benefit perspective. The second concerns the phylogenetic origin of aggression, which in humans involves brain mechanisms that are associated with anger and inhibition, the emotional expression of anger, and how aggressive actions are manifest. The third concerns the origin of aggression in development and its subsequent modification through experience. An evolutionary approach to development yields conclusions that are contrary to the influential social learning perspective, notably that physical aggression occurs early in life, and its subsequent development is characterized by learned inhibition. The fourth explanation concerns the motivational mechanisms controlling aggression: approached from an evolutionary background, these mechanisms range from the inflexible reflex-like responses to those incorporating rational decision-making. PMID:19411108

  20. Effects of vascularization on cancer nanochemotherapy outcomes

    Science.gov (United States)

    Paiva, L. R.; Ferreira, S. C.; Martins, M. L.

    2016-08-01

    Cancer therapy requires anticancer agents capable of efficient and uniform systemic delivery. One promising route to their development is nanotechnology. Here, a previous model for cancer chemotherapy based on a nanosized drug carrier (Paiva et al., 2011) is extended by including tissue vasculature and a three-dimensional growth. We study through computer simulations the therapy against tumors demanding either large or small nutrient supplies growing under different levels of tissue vascularization. Our results indicate that highly vascularized tumors demand more aggressive therapies (larger injected doses administrated at short intervals) than poorly vascularized ones. Furthermore, nanoparticle endocytic rate by tumor cells, not its selectivity, is the major factor that determines the therapeutic success. Finally, our finds indicate that therapies combining cytotoxic agents with antiangiogenic drugs that reduce the abnormal tumor vasculature, instead of angiogenic drugs that normalize it, can lead to successful treatments using feasible endocytic rates and administration intervals.

  1. Identity Development and Aggressive Lexicon

    OpenAIRE

    Khomyk, Volodymyr; Filippova, Inessa

    2014-01-01

    Abstract. The paper is an attempt to explain the aggressive lexicon of adolescents. This explanation was based on the constructive-developmental theory of R. Kegan. Comparison of empirical data meaning-making evolution of identity predisposed to aggression youths with displays of their aggressive lexicon in intense interpersonal interactions indicate that the lexicon spokesmen of the Imperial stage of development a common with others reality is not shared, meaning the voice of his «...

  2. Introduction to "Conflict and Aggression"

    OpenAIRE

    Pagani, Camilla; Farnicka, Marzanna; Liberska, Hanna; Ramirez, J. Martin

    2014-01-01

    During the XXXVII CICA we will be talking about Developmental and Social Conditions of Conflict and Aggression. All participants will have the opportunity to listen to two keynote speakers, eight sessions of scientific presentations, one poster session and two panel discussions. All these kinds of activities will be focused on a variety of types of conditionings of aggression and violence, on methods to measure readiness for aggression and on the practical implications of this knowledge to be...

  3. Aggressive fibromatosis of anterior maxilla

    OpenAIRE

    Shetty, Devi C; Aadithya B Urs; Puneet Ahuja; Seema Sikka

    2011-01-01

    Aggressive fibromatosis is a comparitively rare tumor with unpredictable growth and varying local recurrence rates. It does not develop distant metastases but locally it shows an aggressive and infiltrative behavior. Clinically, aggressive fibromatosis manifests as a painless, firm, often rapidly enlarging mass, fixed to underlying bone or soft tissue. It is never encapsulated. Histologically, it is rich in collagen and fibroblastic cells that are devoid of hyperchromatic or atypical nuclei, ...

  4. Automobile Driving and Aggressive Behavior

    OpenAIRE

    Novaco, Raymond W.

    1991-01-01

    Automobile driving and aggressive behavior have had an extensive association. Themes of dominance and territoriality have long been part of automobile driving, which has also involved flagrant assaultive actions. Recent episodes of roadway violence in metropolitan areas have raised community concern about aggressive behavior in driving, although common beliefs about why such violence occurs can be seen as pseudoexplanations. Various themes in the psychology of aggression are presented as they...

  5. Aggressive fibromatosis of anterior maxilla

    Directory of Open Access Journals (Sweden)

    Devi C Shetty

    2011-01-01

    Full Text Available Aggressive fibromatosis is a comparitively rare tumor with unpredictable growth and varying local recurrence rates. It does not develop distant metastases but locally it shows an aggressive and infiltrative behavior. Clinically, aggressive fibromatosis manifests as a painless, firm, often rapidly enlarging mass, fixed to underlying bone or soft tissue. It is never encapsulated. Histologically, it is rich in collagen and fibroblastic cells that are devoid of hyperchromatic or atypical nuclei, but with more variable cellularity in different tumor sections.

  6. Lymphangiosarcoma complicating extensive congenital mixed vascular malformations.

    Science.gov (United States)

    Al Dhaybi, Rola; Agoumi, Mehdi; Powell, Julie; Dubois, Josée; Kokta, Victor

    2010-09-01

    Pediatric hepatic angiosarcoma is a very rare malignant vascular tumor. A few cases have shown pediatric hepatic angiosarcoma occurring on a background of preexisting vascular lesions. We report the case of a newborn girl who presented extensive limbs and upper trunk cutaneous mixed vascular malformations at birth. These malformations were associated with thrombocytopenia. Cutaneous biopsies revealed complex vascular malformations with a significant lymphatic component. Compressive body suit therapy led to regression of the limbs' cutaneous vascular malformations. At the age of 9 months, the patient presented multiple heterogeneous hepatosplenic nodules. Aggressive treatment with prednisone, vincristine, and hepatosplenic embolizations resulted in initial improvement of the hepatosplenic lesions for few months, followed by an increase of the lesions with failure of response to treatment despite adding alpha-interferon-2b to treatment. The patient died at the age of 19 months. The autopsy's pathological examination revealed a hepatic-based angiosarcoma with plurimetastatic dissemination to the spleen, lungs, peritoneum, pleura, mesenteric linings as well as the serosa of the stomach and small intestine. Multiple cutaneous and visceral complex capillaro-lymphatico-venous malformations were also identified. We hypothesize that these multiple extensive mixed vascular malformations were associated with chronic lymphedema which probably predisposed to the development of the angiosarcoma in our patient. PMID:20863270

  7. Hemagiomas and vascular malformation on face and neck - with intralesional bleomycin injection

    OpenAIRE

    Tatulescu, D; Secheli, I; Secheli, M

    2006-01-01

    Bleomycin, an antineoplasic polipeptidic antibiotic, has been recently used in treatment of vascular anomalies, as a sclerosing agent if it is injected intralesional. We report a study of 4 patients with ages between 3 weeks and 12 years, admitted in "Maria Sklodowska Curie" Children Hospital Bucharest in Surgery Department, and treated with Bleomycin intralesional injections, for vascular anomalies inoperable because of the large surfaces involved or volume of the lesions and special locati...

  8. Chiral anomaly on a lattice

    CERN Document Server

    Mickelsson, J

    1996-01-01

    A calculation of the chiral anomaly on a finite lattice without fermion doubling is presented . The lattice gauge field is defined in the spirit of noncommutative geometry. Standard formulas for the continuum anomaly are obtained as a limit.

  9. Urinary System anomalies at birth

    OpenAIRE

    Sharada B. Menasinkai; Mahantappa A. Chiniwar; Saraswathi, G

    2015-01-01

    Background: Congenital anomalies of urinary system are common and are found in 3-4% of population, and lethal urinary anomalies account for 10% of termination of pregnancy. Methods: A study was done to know the incidence of congenital anomalies at birth for the period of 4 months from May 99 - Sept 99 at Cheluvamba hospital attached to Mysore medical college. Congenital anomalies in the still births, live births and aborted fetuses >20 weeks were studied along with the case history and ul...

  10. Current commutator anomalies and chiral anomalies in the canonical formalism

    International Nuclear Information System (INIS)

    Without recourse to the Bjorken-Johnson-Low (BJL) method, current-current and current-electric-field commutator anomalies are evaluated in chiral gauge theories in two- and four-dimensional spacetime with the help of a gauge covariant regularization method. The results are consistent with previous analyses through the BJL method, and partially confirmed Faddeev's conjecture on the commutator anomalies of the Gauss law constraint operators within the canonical formalism. The chiral anomalies of the current divergence are derived from these commutator anomalies in the Weyl gauge where current-electric-field commutator anomalies play important roles

  11. Anomaly-safe discrete groups

    International Nuclear Information System (INIS)

    We show that there is a class of finite groups, the so-called perfect groups, which cannot exhibit anomalies. This implies that all non-Abelian finite simple groups are anomaly-free. On the other hand, non-perfect groups generically suffer from anomalies. We present two different ways that allow one to understand these statements

  12. Anomalies and developmental defects

    International Nuclear Information System (INIS)

    Amonalies and developmental defects in trachea and bronchi (tracheal bronch us, diverticulum of trachea or bronchus, defects due to atresia of bronchial tre e, tracheobronchomegaly), lung vessels (aneurisms of pulmonary artery, agenesia, aplasia and hypoplasia of pulmonary artery,anomalies of pulmonary veins, varico sis of pulmonary veins), pulmonary tissue (lung sequestration, congenital lobar pulmonary emphysema, essential hemosiderosis), have beendescribed. The problems of the diagnosis of the above-mentioned diseases using roentgenograms are consid ered

  13. Anomalies, Branes, and Currents

    OpenAIRE

    Cheung, Yeuk-Kwan E.; Yin, Zheng

    1997-01-01

    When a D-brane wraps around a cycle of a curved manifold, the twisting of its normal bundle can induce chiral asymmetry in its worldvolume theory. We obtain the general form of the resulting anomalies for D-branes and their intersections. They are not cancelled among themselves, and the standard inflow mechanism does not apply at first sight because of their apparent lack of factorizability and the apparent vanishing of the corresponding inflow. We show however after taking into consideration...

  14. Aggressive angiomyxoma in pregnancy

    Directory of Open Access Journals (Sweden)

    Prashant Goyal

    2014-06-01

    Full Text Available Aggressive angiomyxoma (AA is a rare, slow-growing mesenchymal neoplasm of vulvo-perineal region. Although AA is common in females of reproductive age, only a few cases during pregnancy have been documented in the English literature. It carries a high risk of local recurrence but rarely metastasizes. The high recurrence rate can partially be due to inadequate excision, which may be due to an incorrect preoperative diagnosis. We present a case of 25-year-old pregnant female presenting with a painless and soft mass attached to left labia majora by a stalk. This mass was clinically thought to be a lipoma. It was completely excised and was diagnosed as AA on histopathology. Gynecologists should consider the diagnosis of AA when a young female especially during her pregnancy presents with a vulvo-perineal mass. Incorrect diagnosis may lead to incomplete excision and recurrence.

  15. Aggression, suicidality, and serotonin.

    Science.gov (United States)

    Linnoila, V M; Virkkunen, M

    1992-10-01

    Studies from several countries, representing diverse cultures, have reported an association between violent suicide attempts by patients with unipolar depression and personality disorders and low concentrations of the major serotonin metabolite 5-hydroxyindoleacetic acid (5-HIAA) in the cerebrospinal fluid (CSF). Related investigations have documented a similar inverse correlation between impulsive, externally directed aggressive behavior and CSF 5-HIAA in a subgroup of violent offenders. In these individuals, low CSF 5-HIAA concentrations are also associated with a predisposition to mild hypoglycemia, a history of early-onset alcohol and substance abuse, a family history of type II alcoholism, and disturbances in diurnal activity rhythm. These data are discussed in the context of a proposed model for the pathophysiology of a postulated "low serotonin syndrome." PMID:1385390

  16. The Pioneer Anomaly

    CERN Document Server

    Turyshev, Slava G

    2010-01-01

    Radio-metric Doppler tracking data received from the Pioneer 10 and 11 spacecraft from heliocentric distances of 20-70 AU has consistently indicated the presence of a small, anomalous, blue-shifted frequency drift uniformly changing with a rate of ~6 x 10^{-9} Hz/s. Ultimately, the drift was interpreted as a constant sunward deceleration of each particular spacecraft at the level of a_P = (8.74 +/- 1.33) x 10^{-10} m/s^2. This apparent violation of the Newton's gravitational inverse-square law has become known as the Pioneer anomaly; the nature of this anomaly remains unexplained. In this review, we summarize the current knowledge of the physical properties of the discovered effect and the conditions that led to its detection and characterization. We review various mechanisms proposed to explain the anomaly and discuss the current state of efforts to determine its nature. A comprehensive new investigation of the anomalous behavior of the two Pioneers has begun recently. The new efforts rely on the much-extend...

  17. The Effects of Pornography on Aggressive Behavior.

    Science.gov (United States)

    Stacy, Lauri L.

    This document reviews existing empirical research on the effect of pornography on aggressive behavior. Two types of pornography are distinguished: aggressive pornography and non-aggressive pornography. Conclusions drawn from the research review are presented, including: (1) aggressive pornograpy consistently increases aggressive attitudes and…

  18. Subtypes of Aggressive Behaviors: A Developmental Perspective

    Science.gov (United States)

    Vitaro, Frank; Brendgen, Mara; Barker, Edward D.

    2006-01-01

    Aggressive behaviors in children and adolescents have undergone important conceptual and definitional modifications in the past two decades. In particular, subtypes of aggression have been proposed that separate the form and the function of the aggressive behaviors (i.e., social vs. physical aggression; reactive vs. proactive aggression).…

  19. Aggression in children and youth towards crime.

    OpenAIRE

    ŠTEFFLOVÁ, Eva

    2013-01-01

    This thesis deals with aggressive children and youth, which leads to crime. It deals with the causes of aggression, factors that influence aggression, but also the type of aggression. The practical part contains specific case studies of individuals whose aggression was one of the causes of crime.

  20. Aggression and Violence in Youth.

    Science.gov (United States)

    William Gladden Foundation, York, PA.

    This booklet was written to provide an understanding of aggression and violence in youth. Its purpose is to help parents, professionals, and other concerned citizens prevent or reduce these potentially dangerous behaviors. The introduction notes that many experts agree that aggression and violence are on the rise in America. The first section of…

  1. Global anomalies in six dimensions

    International Nuclear Information System (INIS)

    Applying Witten's formula for global gauge and gravitational anomalies to six dimensional supergravities, we find: (a) The perturbatively anomaly free N=4 chiral supergravity coupled to 21 tensor multiplets is global anomaly free for any choice of space-time manifold with vanishing third Betti number (b3). (b) The perturbatively anomaly free matter coupled N=2 chiral supergravities with arbitrary number of tensor multiplets, whose Yang-Mills gauge groups do not include G2, SU(2), or SU(3) are free of global anomalies if the theory is formulated on S6. In the case of 9 tensor multiplets coupled to supergravity this result holds for any spacetime with vanishing b3. (c) The N=6 chiral supergravity has perturbative gravitational anomalies, and therefore the global anomalies need not be considered in this case. (author)

  2. Aggressive Erotica and Violence against Women.

    Science.gov (United States)

    Donnerstein, Edward

    1980-01-01

    Examines the effects of aggressive-erotic stimuli on male aggression toward females. Male subjects' deliveries of electric shocks to males or females after viewing either a neutral, erotic, or aggressive-erotic film were measured. (Author/SS)

  3. Head and neck vascular malformations: time-resolved MR projection angiography

    Energy Technology Data Exchange (ETDEWEB)

    Ziyeh, S.; Schumacher, M.; Hochmuth, A.; Klisch, J. [Section of Neuroradiology, Department of Neurosurgery, University of Freiburg (Germany); Strecker, R. [Section of Medical Physics, Department of Radiology, University of Freiburg (Germany); Roessler, J. [Department of Paediatric Haematology and Oncology, University of Freiburg (Germany)

    2003-10-01

    Extracranial vascular anomalies can be divided into haemangiomas and vascular malformations. The latter can be subdivided on the basis of the predominant type of vascular channels. Separation of high- and low-flow vascular malformations is of clinical importance. We report preliminary observations on time-resolved magnetic resonance projection angiography (MRPA) of vascular malformations of the head and neck. We examined eight patients with vascular anomalies of the head and neck. On MRPA the time between the early arterial phase and enhancement of the malformation could be used to distinguish high- and low-flow lesions. High-flow arteriovenous malformations showed early, intense enhancement. Venous malformations were either not visible on MRPA or showed late enhancement of veins. One patient was examined after embolisation of an arteriovenous fistula of the mandible. Normal MRPA was taken to indicate absence of a residual lesion. (orig.)

  4. Chiral supergravity and anomalies

    CERN Document Server

    Mielke, E W; Macias, Alfredo; Mielke, Eckehard W.

    1999-01-01

    Similarily as in the Ashtekar approach, the translational Chern-Simons term is, as a generating function, instrumental for a chiral reformulation of simple (N=1) supergravity. After applying the algebraic Cartan relation between spin and torsion, the resulting canonical transformation induces not only decomposition of the gravitational fields into selfdual and antiselfdual modes, but also a splitting of the Rarita-Schwinger fields into their chiral parts in a natural way. In some detail, we also analyze the consequences for axial and chiral anomalies.

  5. Urinary System anomalies at birth

    Directory of Open Access Journals (Sweden)

    Sharada B. Menasinkai

    2015-06-01

    Full Text Available Background: Congenital anomalies of urinary system are common and are found in 3-4% of population, and lethal urinary anomalies account for 10% of termination of pregnancy. Methods: A study was done to know the incidence of congenital anomalies at birth for the period of 4 months from May 99 - Sept 99 at Cheluvamba hospital attached to Mysore medical college. Congenital anomalies in the still births, live births and aborted fetuses >20 weeks were studied along with the case history and ultrasound reports. Aborted fetuses and still born babies were collected for autopsy after the consent of parents. These babies were fixed in 10% formalin and autopsy was done after fixing, and anomalies were noted. Results: Total births during study period were 3000. There were 61 babies with congenital anomalies and 6 babies had anomalies of urinary system. Among the urinary system anomalies 1 baby had bilateral renal agenesis, 1 baby had unilateral renal agenesis with anophthalmia (Fraser syndrome, 2 babies had Multicystic dysplastic kidney disease (MCDK and 1 live baby had hydronephrosis due to obstruction at pelvi ureteric junction, and 1 live female baby had polycystic kidneys. Conclusion: Incidence of urinary system anomalies in the present study was 2 per 1000 births. U/S detection of urinary anomalies varies with period of gestation, amniotic fluid volume and visualisation of urinary bladder. Autopsy helps to detect renal agenesis. [Int J Res Med Sci 2015; 3(3.000: 743-748

  6. Angiomyolipoma with caval extension and regional nodal involvement: Aggressive behaviour or just rare natural history? Case report and review of literature

    OpenAIRE

    Kaler, Kamaljot Singh; Rittberg, Rebekah; Drachenberg, Darrel E

    2014-01-01

    Renal angiomyolipoma (AML) is predominantly a non-aggressive benign tumour. Cases of more aggressive AMLs are present in the literature. We present 2 cases of aggressive AML behaviour. The first case is an AML with vascular extension in a young female and the second case is of AML found in regional lymph nodes in a female with a left renal AML and renal cell carcinoma.

  7. Collagen vascular disease

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/article/001223.htm Collagen vascular disease To use the sharing features on this page, ... were previously said to have "connective tissue" or "collagen vascular" disease. We now have names for many of many ...

  8. Heart and vascular services

    Science.gov (United States)

    ... branch of medicine that focuses on the cardiovascular system. ... Circulatory system; Vascular system; Cardiovascular system ... to diagnose, monitor or treat diseases of the circulatory and vascular system include: Cardiac CT for calcium scoring Cardiac MRI ...

  9. Trace anomaly driven inflation

    Science.gov (United States)

    Hawking, S. W.; Hertog, T.; Reall, H. S.

    2001-04-01

    This paper investigates Starobinsky's model of inflation driven by the trace anomaly of conformally coupled matter fields. This model does not suffer from the problem of contrived initial conditions that occurs in most models of inflation driven by a scalar field. The universe can be nucleated semiclassically by a cosmological instanton that is much larger than the Planck scale provided there are sufficiently many matter fields. There are two cosmological instantons: the four sphere and a new ``double bubble'' solution. This paper considers a universe nucleated by the four sphere. The AdS/CFT correspondence is used to calculate the correlation function for scalar and tensor metric perturbations during the ensuing de Sitter phase. The analytic structure of the scalar and tensor propagators is discussed in detail. Observational constraints on the model are discussed. Quantum loops of matter fields are shown to strongly suppress short scale metric perturbations, which implies that short distance modifications of gravity would probably not be observable in the cosmic microwave background. This is probably true for any model of inflation provided there are sufficiently many matter fields. This point is illustrated by a comparison of anomaly driven inflation in four dimensions and in a Randall-Sundrum brane-world model.

  10. Quantifying Aggressive Behavior in Zebrafish.

    Science.gov (United States)

    Teles, Magda C; Oliveira, Rui F

    2016-01-01

    Aggression is a complex behavior that influences social relationships and can be seen as adaptive or maladaptive depending on the context and intensity of expression. A model organism suitable for genetic dissection of the underlying neural mechanisms of aggressive behavior is still needed. Zebrafish has already proven to be a powerful vertebrate model organism for the study of normal and pathological brain function. Despite the fact that zebrafish is a gregarious species that forms shoals, when allowed to interact in pairs, both males and females express aggressive behavior and establish dominance hierarchies. Here, we describe two protocols that can be used to quantify aggressive behavior in zebrafish, using two different paradigms: (1) staged fights between real opponents and (2) mirror-elicited fights. We also discuss the methodology for the behavior analysis, the expected results for both paradigms, and the advantages and disadvantages of each paradigm in face of the specific goals of the study. PMID:27464816

  11. Observational manifestations of anomaly inflow

    OpenAIRE

    Boyarsky, Alexey; Ruchayskiy, Oleg; Shaposhnikov, Mikhail

    2005-01-01

    In theories with chiral couplings, one of the important consistency requirements is that of the cancellation of a gauge anomaly. In particular, this is one of the conditions imposed on the hypercharges in the standard model. However, anomaly cancellation condition of the standard model looks unnatural from the perspective of a theory with extra dimensions. Indeed, if our world were embedded into an odd-dimensional space, then the full theory would be automatically anomaly-free. In this paper ...

  12. ''Aggressive'' renal angiomyolipoma

    International Nuclear Information System (INIS)

    We describe the US and CT examinations of 4 patients with renal angiomyolipoma with an 'aggressive' appearance, and review the literature. The imaging findings in 4 patients with benign renal angiomyolipomas associated with thrombosis of the renal vein and/or inferior vena cava are presented. CT demonstrated fat densities within both tumor and thrombus. In one patient, small lymph nodes with low density internal areas were detected in the para-aortic region. When considering our patients together with those reported in the literature, we found that most angiomyolipomas with venous invasion were large and centrally located within the kidney. Venous thrombosis was observed in 9 lesions of the right kidney, and in only 4 of the left one. One patient only had symptoms due to the thrombus; 10 had problems due to the tumor; and 3 were asymptomatic. Only 4 patients with pararenal enlarged lymph nodes have been reported on in the imaging literature. Fat-containing nodes were detected by CT in one case only; the others had enlarged nodes of soft-tissue density. In one patient the diagnosis of hamartomatous lymph node invasion was established by angiography. In patients with renal angiomyolipoma, demonstration of both fatty thrombus and the fatty infiltration of lymph nodes of the renal hilum cannot be regarded as an indication of malignancy, but only of local aggessive behavior. Conservative treatment seems possible. Detection of enlarged lymph nodes of soft tissue density may cause difficult diagnostic problems, with the diagnosis addressed only by the presence of associated lesions. (orig./MG)

  13. ``Aggressive`` renal angiomyolipoma

    Energy Technology Data Exchange (ETDEWEB)

    Cittadini, G. Jr. [Univ. of Genoa (Italy). Dept. of Radiology; Pozzi Mucelli, F. [Univ. of Trieste (Italy). Dept. of Radiology; Danza, F.M. [Catholic Sacro Cuore Univ., Rome (Italy). Dept. of Radiology; Derchi, L.E. [Univ. of Genoa (Italy). Dept. of Radiology; Pozzi Mucelli, R.S. [Univ. of Trieste (Italy). Dept. of Radiology

    1996-11-01

    We describe the US and CT examinations of 4 patients with renal angiomyolipoma with an `aggressive` appearance, and review the literature. The imaging findings in 4 patients with benign renal angiomyolipomas associated with thrombosis of the renal vein and/or inferior vena cava are presented. CT demonstrated fat densities within both tumor and thrombus. In one patient, small lymph nodes with low density internal areas were detected in the para-aortic region. When considering our patients together with those reported in the literature, we found that most angiomyolipomas with venous invasion were large and centrally located within the kidney. Venous thrombosis was observed in 9 lesions of the right kidney, and in only 4 of the left one. One patient only had symptoms due to the thrombus; 10 had problems due to the tumor; and 3 were asymptomatic. Only 4 patients with pararenal enlarged lymph nodes have been reported on in the imaging literature. Fat-containing nodes were detected by CT in one case only; the others had enlarged nodes of soft-tissue density. In one patient the diagnosis of hamartomatous lymph node invasion was established by angiography. In patients with renal angiomyolipoma, demonstration of both fatty thrombus and the fatty infiltration of lymph nodes of the renal hilum cannot be regarded as an indication of malignancy, but only of local aggessive behavior. Conservative treatment seems possible. Detection of enlarged lymph nodes of soft tissue density may cause difficult diagnostic problems, with the diagnosis addressed only by the presence of associated lesions. (orig./MG).

  14. How to Prevent Vascular Disease

    Science.gov (United States)

    ... our CEO Board of Directors Scientific Advisory Board History of Vascular Cures Impact Contact Us Vascular Disease What is Vascular Disease? Education and Awareness Vascular Diseases Abdominal Aortic Aneurysm Aortic ...

  15. Mathematical Model of Age Aggression

    OpenAIRE

    Golovinski, P. A.

    2013-01-01

    We formulate a mathematical model of competition for resources between representatives of different age groups. A nonlinear kinetic integral-differential equation of the age aggression describes the process of redistribution of resources. It is shown that the equation of the age aggression has a stationary solution, in the absence of age-dependency in the interaction of different age groups. A numerical simulation of the evolution of resources for different initial distributions has done. It ...

  16. Aggression, Pleasure, and Cognitive Dissonance

    OpenAIRE

    Alvarado Izquierdo, Jesús María; J. Martín Ramírez

    2014-01-01

    The relationship between aggression, pleasure and decision-making is analyzed applying a mediation model of structural equation modeling (SEM). The study explored it in two samples of similar age: young offenders and university students. A close relationship between aggression and pleasure was found in both populations. But, whereas in the case of university students, this congruence leads to a normal or adjusted behavior, in the case of young offenders, however, a mismatched evaluation of c...

  17. The psychobiology of aggressive behaviour.

    OpenAIRE

    Träskman Bendz, Lil; Westling, Sofie

    2005-01-01

    Among psychiatric illnesses, genetically determined disorders usually have an early onset and a severe and complicated course. Gene-environmental interaction is of importance for aggressive impulsive behaviour. For example, alcoholism type II has a high family loading, a severe course, and is often associated with antisocial behaviour. In order to gain further understanding of aggressive and impulsive behaviour, genes determining serotonin metabolism, neurosteroids and carbohydrate metabolism...

  18. Why are small males aggressive?

    OpenAIRE

    Morrell, Lesley J.; Lindström, Jan; Ruxton, Graeme D

    2005-01-01

    Aggression is ubiquitous in the animal kingdom, whenever the interests of individuals conflict. In contests between animals, the larger opponent is often victorious. However, counter intuitively, an individual that has little chance of winning (generally smaller individuals) sometimes initiates contests. A number of hypotheses have been put forward to explain this behaviour, including the ‘desperado effect’ according to which, the likely losers initiate aggression due to lack of alternative o...

  19. Risking Aggression: Reply to Block

    Directory of Open Access Journals (Sweden)

    Kris Borer

    2010-05-01

    Full Text Available In his paper, “Is There an ‘Anomalous’ Section of the Laffer Curve?”, Walter Block describes some situations in which it appears that a libertarian should violate the non-aggression principle. To rectify this, Block proposes a different perspective on libertarianism which he calls punishment theory. This paper argues that no new theory is needed, as the non-aggression principle can be used to resolve theapparent conundrums.

  20. Risking Aggression: Reply to Block

    OpenAIRE

    Kris Borer

    2010-01-01

    In his paper, “Is There an ‘Anomalous’ Section of the Laffer Curve?”, Walter Block describes some situations in which it appears that a libertarian should violate the non-aggression principle. To rectify this, Block proposes a different perspective on libertarianism which he calls punishment theory. This paper argues that no new theory is needed, as the non-aggression principle can be used to resolve theapparent conundrums.

  1. What is a Timing Anomaly?

    DEFF Research Database (Denmark)

    Cassez, Franck; Hansen, Rene Rydhof; Olesen, Mads Chr.

    difficult. We examine previous definitions of timing anomalies, and identify examples where they do not align with common observations. We then provide a definition for consistently slower hardware traces that can be used to define timing anomalies and aligns with common observations.......Timing anomalies make worst-case execution time analysis much harder, because the analysis will have to consider all local choices. It has been widely recognised that certain hardware features are timing anomalous, while others are not. However, defining formally what a timing anomaly is, has been...

  2. Congenital vascular malformations in scintigraphic evaluation

    International Nuclear Information System (INIS)

    Congenital vascular malformations are tumour-like, non-neoplastic lesions caused by disorders of vascular tissue morphogenesis. They are characterised by a normal cell replacement cycle throughout all growth phases and do not undergo spontaneous involution. Here we present a scintigraphic image of familial congenital vascular malformations in two sisters. A 17-years-old young woman with a history of multiple hospitalisations for foci of vascular anomalies appearing progressively in the upper and lower right limbs, chest wall and spleen. A Parkes Weber syndrome was diagnosed based on the clinical picture. Due to the occurrence of new foci of malformations, a whole-body scintigraphic examination was performed. A 12-years-old girl reported a lump in the right lower limb present for approximately 2 years, which was clinically identified as a vascular lesion in the area of calcaneus and talus. Phleboscintigraphy visualized normal radiomarker outflow from the feet via the deep venous system, also observed in the superficial venous system once the tourniquets were released. In static and whole-body examinations vascular malformations were visualised in the area of the medial cuneiform, navicular and talus bones of the left foot, as well as in the projection of right calcaneus and above the right talocrural joint. People with undiagnosed disorders related to the presence of vascular malformations should undergo periodic follow-up to identify lesions that may be the cause of potentially serious complications and to assess the results of treatment. Presented scintigraphic methods may be used for both diagnosing and monitoring of disease progression

  3. Anomaly poles as common signatures of chiral and conformal anomalies

    International Nuclear Information System (INIS)

    One feature of the chiral anomaly, analyzed in a perturbative framework, is the appearance of massless poles which account for it. They are identified by a spectral analysis of the anomaly graph and are usually interpreted as being of an infrared origin. Recent investigations show that their presence is not just confined in the infrared, but that they appear in the effective action under the most general kinematical conditions, even if they decouple in the infrared. Further studies reveal that they are responsible for the non-unitary behaviour of these theories in the ultraviolet (UV) region. We extend this analysis to the case of the conformal anomaly, showing that the effective action describing the interaction of gauge fields with gravity is characterized by anomaly poles that give the entire anomaly and are decoupled in the infrared (IR), in complete analogy with the chiral case. This complements a related analysis by Giannotti and Mottola on the trace anomaly in gravity, in which an anomaly pole has been identified in the corresponding correlator using dispersion theory in the IR. Our extension is based on an exact computation of the off-shell correlation function involving an energy-momentum tensor and two vector currents (the gauge-gauge-graviton vertex) which is responsible for the appearance of the anomaly.

  4. Rare Upper Airway Anomalies.

    Science.gov (United States)

    Windsor, Alanna; Clemmens, Clarice; Jacobs, Ian N

    2016-01-01

    A broad spectrum of congenital upper airway anomalies can occur as a result of errors during embryologic development. In this review, we will describe the clinical presentation, diagnosis, and management strategies for a few select, rare congenital malformations of this system. The diagnostic tools used in workup of these disorders range from prenatal tests to radiological imaging, swallowing evaluations, indirect or direct laryngoscopy, and rigid bronchoscopy. While these congenital defects can occur in isolation, they are often associated with disorders of other organ systems or may present as part of a syndrome. Therefore workup and treatment planning for patients with these disorders often involves a team of multiple specialists, including paediatricians, otolaryngologists, pulmonologists, speech pathologists, gastroenterologists, and geneticists. PMID:26277452

  5. Trace anomaly driven inflation

    CERN Document Server

    Hawking, Stephen William; Reall, H S

    2001-01-01

    This paper investigates Starobinsky's model of inflation driven by the trace anomaly of conformally coupled matter fields. This model does not suffer from the problem of contrived initial conditions that occurs in inflation driven by a scalar field. The universe is nucleated semi-classically by a cosmological instanton that is much larger than the Planck scale provided there are sufficiently many matter fields. There are two cosmological instantons: the four sphere and a new ``double bubble'' solution. This paper considers a universe nucleated by the four sphere. The AdS/CFT correspondence is used to calculate the correlation function for scalar and tensor metric perturbations during the ensuing de Sitter phase. The analytic structure of the scalar and tensor propagators is discussed in detail. Observational constraints on the model are discussed. Quantum loops of matter fields are shown to strongly suppress short scale metric perturbations, which implies that short distance modifications of gravity would pro...

  6. Understanding diboson anomalies

    CERN Document Server

    Sajjad, Aqil

    2015-01-01

    We conduct a model-independent effective theory analysis of hypercharged fields with various spin structures towards understanding the recently observed diboson signal as well as possible future excesses involving $WZ$ and $WH$ modes. Within the assumption of no additional physics beyond the standard model up to the scale of the possible diboson resonance, we show that a hypercharged scalar and a spin 2 particle do not have tree-level $WZ$ and $WH$ decay channels up to dimension 5 operators, and cannot therefore account for the anomaly, whereas a hypercharged vector is a viable candidate provided we also introduce a $Z'$ in order to satisfy electroweak precision constraints. We calculate bounds on the $Z'$ mass consistent with the Atlas/CMS diboson signals as well as electroweak precision data.

  7. Do Teachers Misbehave? Aggression in School Teams

    Science.gov (United States)

    Ben Sasson, Dvora; Somech, Anit

    2015-01-01

    Purpose: Despite growing research on school aggression, significant gaps remain in the authors' knowledge of team aggression, since most studies have mainly explored aggression on the part of students. The purpose of this paper is to focus on understanding the phenomenon of workplace aggression in school teams. Specifically, the purpose of the…

  8. Adolescents' Social Reasoning about Relational Aggression

    Science.gov (United States)

    Goldstein, Sara E.; Tisak, Marie S.

    2010-01-01

    We examined early adolescents' reasoning about relational aggression, and the links that their reasoning has to their own relationally aggressive behavior. Thinking about relational aggression was compared to thinking about physical aggression, conventional violations, and personal behavior. In individual interviews, adolescents (N = 103) rated…

  9. Esthetic dental anomalies as motive for bullying in schoolchildren.

    Science.gov (United States)

    Scheffel, Débora Lopes Salles; Jeremias, Fabiano; Fragelli, Camila Maria Bullio; Dos Santos-Pinto, Lourdes Aparecida Martins; Hebling, Josimeri; de Oliveira, Osmir Batista

    2014-01-01

    Facial esthetics, including oral esthetics, can severely affect children's quality-of-life, causing physical, social and psychological impairment. Children and adolescents with esthetic-related dental malformations are potential targets for bullies. This study was aimed to present and discuss patients who suffered from bullying at school and family environment due to esthetic-related teeth anomalies. Providing an adequate esthetic dental treatment is an important step in their rehabilitation when the lack of esthetic is the main source of bullying. After dental treatment, we noted significant improvement in self-esteem, self-confidence, socialization and academic performance of all patients and improvement in parental satisfaction regarding the appearance of their children. It is imperative that both family and school care providers be constantly alert about bullying in order to prevent or interrupt aggressive and discriminatory practices against children and adolescents. Clearly, dental anomalies may be a motive for bullying. PMID:24966759

  10. Seismic data fusion anomaly detection

    Science.gov (United States)

    Harrity, Kyle; Blasch, Erik; Alford, Mark; Ezekiel, Soundararajan; Ferris, David

    2014-06-01

    Detecting anomalies in non-stationary signals has valuable applications in many fields including medicine and meteorology. These include uses such as identifying possible heart conditions from an Electrocardiography (ECG) signals or predicting earthquakes via seismographic data. Over the many choices of anomaly detection algorithms, it is important to compare possible methods. In this paper, we examine and compare two approaches to anomaly detection and see how data fusion methods may improve performance. The first approach involves using an artificial neural network (ANN) to detect anomalies in a wavelet de-noised signal. The other method uses a perspective neural network (PNN) to analyze an arbitrary number of "perspectives" or transformations of the observed signal for anomalies. Possible perspectives may include wavelet de-noising, Fourier transform, peak-filtering, etc.. In order to evaluate these techniques via signal fusion metrics, we must apply signal preprocessing techniques such as de-noising methods to the original signal and then use a neural network to find anomalies in the generated signal. From this secondary result it is possible to use data fusion techniques that can be evaluated via existing data fusion metrics for single and multiple perspectives. The result will show which anomaly detection method, according to the metrics, is better suited overall for anomaly detection applications. The method used in this study could be applied to compare other signal processing algorithms.

  11. Axial anomaly in nonrenormalizable theories

    International Nuclear Information System (INIS)

    The anomaly for the axial current in nonrenormalizable theories with electromagnetic coupling is considered. The spinor electrodynamics with Pauli term is examined in detail using the Feynman graph technique and the point-splitting method. The same finite value for the axial anomaly emerges. (author)

  12. Algebraic study of chiral anomalies

    Indian Academy of Sciences (India)

    Juan Mañes; Raymond Stora; Bruno Zumino

    2012-06-01

    The algebraic structure of chiral anomalies is made globally valid on non-trivial bundles by the introduction of a fixed background connection. Some of the techniques used in the study of the anomaly are improved or generalized, including a systematic way of generating towers of ‘descent equations’.

  13. Anomaly mediation deformed by axion

    International Nuclear Information System (INIS)

    We show that in supersymmetric axion models the axion supermultiplet obtains a sizable F-term due to a non-supersymmetric dynamics and it generally gives the gaugino masses comparable to the anomaly mediation contribution. Thus the gaugino mass relation predicted by the anomaly mediation effect can be significantly modified in the presence of axion to solve the strong CP problem

  14. Trace Anomaly in Geometric Discretization

    OpenAIRE

    Czech, Bartlomiej

    2007-01-01

    I develop the simplest geometric-discretized analogue of two dimensional scalar field theory, which qualitatively reproduces the trace anomaly of the continuous theory. The discrete analogue provides an interpretation of the trace anomaly in terms of a non-trivial transformation of electric-magnetic duality-invariant modes of resistor networks that accommodate both electric and magnetic charge currents.

  15. Fat content: Clue for evaluation of aggressiveness in vertebral hemangiomas

    International Nuclear Information System (INIS)

    In 19 vertebral hemangiomas (VHs), the amount of fat content evaluated on plain CT scan and by signal intensity on T1-weighted MR images was compared with lesion vascularization on contrast material-enhanced CT scans or selective arteriograms. The 13 VHs with fatty attenuation values on plain CT scan and increased signal intensity on T1-weighted MR images demonstrated no or moderate hypervascularization on contrast-enhanced CT scans or selective arteriograms. The four VHs with predominant soft-tissue attenuation values on plain CT scan and decreased or isointense signal intensity on T1-weighted MR images showed frank hypervasculization on contrast-enchanced CT scans or selective arteriograms. Evaluation of the amount of fat contained in the VH stroma is a valuable tool for predicting vascularization and aggressiveness of VH

  16. Kindergarten Children's Genetic Vulnerabilities Interact with Friends' Aggression to Promote Children's Own Aggression

    Science.gov (United States)

    van Lier, Pol; Boivin, Michel; Dionne, Ginette; Vitaro, Frank; Brendgen, Mara; Koot, Hans; Tremblay, Richard E.; Perusse, Daniel

    2007-01-01

    Objective: To examine whether kindergarten children's genetic liability to physically aggress moderates the contribution of friends' aggression to their aggressive behaviors. Method: Teacher and peer reports of aggression were available for 359 6-year-old twin pairs (145 MZ, 212 DZ) as well as teacher and peer reports of aggression of the two best…

  17. System for closure of a physical anomaly

    Energy Technology Data Exchange (ETDEWEB)

    Bearinger, Jane P; Maitland, Duncan J; Schumann, Daniel L; Wilson, Thomas S

    2014-11-11

    Systems for closure of a physical anomaly. Closure is accomplished by a closure body with an exterior surface. The exterior surface contacts the opening of the anomaly and closes the anomaly. The closure body has a primary shape for closing the anomaly and a secondary shape for being positioned in the physical anomaly. The closure body preferably comprises a shape memory polymer.

  18. Anomaly Poles as Common Signatures of Chiral and Conformal Anomalies

    CERN Document Server

    Armillis, Roberta; Rose, Luigi Delle

    2009-01-01

    One feature of the chiral anomaly, analyzed in a perturbative framework, is the appearance of massless poles which account for it. They are identified by a spectral analysis of the anomaly graph and are usually interpreted as being of an infrared origin. Recent investigations shown that their presence is not just confined in the infrared, but that they appear in the effective action under the most general kinematical conditions, even if they decouple in the infrared. Further studies reveal that they are responsible for the non-unitary behaviour of these theories in the ultraviolet (UV) region. We extend this analysis to the case of the conformal anomaly, showing that the effective action describing the interaction of gauge fields with gravity is characterized by anomaly poles that give the entire anomaly and are decoupled in the infrared (IR), in complete analogy with the chiral case. This complements a related analysis by Giannotti and Mottola on the trace anomaly in gravity, in which an anomaly pole has bee...

  19. Vascularity in thyroid neoplasms

    DEFF Research Database (Denmark)

    Larsen, Karen Kjaer; Andersen, Niels Frost; Melsen, Flemming;

    2006-01-01

    The aim of the present study was to evaluate the reliability of four different methods (vascular grading, Chalkley count, microvessel density (MVD) and stereological estimation) for quantifying intratumoral microvascularity in thyroid neoplasms, by comparing the variability within and between...... count should be the preferred method for assessing microvascularity in thyroid neoplasms. The diagnostic evaluation revealed a tendency towards higher degree of vascularity in FA compared to both FC and PC for all methods. No statistically significant association was seen between vascular density and...

  20. Binning of satellite magnetic anomalies

    Science.gov (United States)

    Goyal, H. K.; Vonfrese, R. R. B.; Hinze, W. J.

    1985-01-01

    Crustal magnetic anomaly signals over satellite orbits were simulated to investigate numerical averaging as an anomaly estimator. Averaging as an anomaly estimator involves significant problems concerning spatial and amplitude smoothing of the satellite magnetic observations. The results of simulations suggest that the error of numerical averaging constitutes a small and relatively minor component of the total error-budget of higher orbital anomaly estimates, whereas for lower orbital estimates numerical averaging error increases substantially. As an alternative to numerical averaging, least-squares collocation was investigated and observed to produce substantially more accurate anomaly estimates, particularly as the orbital elevation of prediction was decreased towards the crustal sources. In contrast to averaging, collocation is a significantly more resource-intensive procedure to apply because of the practical, but surmountable problems related to establishing and inverting the covariance matrix for accurate anomaly prediction. However, collocation may be much more effectively used to exploit the anomaly details contained in the lower orbital satellite magnetic data for geologic analysis.

  1. Aggressive Jungen und gewalthaltige Computerspiele

    OpenAIRE

    Kristen, Astrid

    2010-01-01

    Does playing violent video games increase aggressive behavior over time or is it aggressive children who increasingly seek out (and play) these violent video games? To study such long-term effects a longitudinal design is necessary. Within a field study in a large German city (Kinder, Computer, Hobby, Lernen – KUHL, Freie Universtität Berlin) about 115 elementary school boys attending in the beginning (t1) classrooms of the third and fourth grade and twelve months later (t2) classrooms of the...

  2. A twelve-year survey of cervicothoracic vascular injuries.

    Science.gov (United States)

    Bladergroen, M; Brockman, R; Luna, G; Kohler, T; Johansen, K

    1989-05-01

    This study of a large series of victims of trauma to the cervicothoracic great vessels confirms the lethal potential of these injuries: more than half of victims of such injuries died. The optimal management of patients potentially harboring such vascular damage appears to include skilled prehospital resuscitation and rapid transport to a trauma center, a high index of diagnostic suspicion, a low threshold for the performance of contrast arteriography, aggressive surveillance for associated neurologic and aerodigestive tract injuries, and timely technical repair, including liberal indications for sternotomy or thoracotomy to assure vascular control. PMID:2712204

  3. BRS cohomology and topological anomalies

    International Nuclear Information System (INIS)

    The occurrence of non-abelian anomalies in gauge theories and gravitation, first discovered via perturbative techniques, is now completely explained from the mathematical point of view by means of the family index theorem of Atiyah and Singer. Here we make contact between this approach and BRS cohomology, by showing that they yield the same non-abelian anomalies, provided a certain restriction to ''local'' functionals is not introduced from the very beginning. In particular, this solves the ''unicity'' problem for this kind of anomalies. Local BRS cohomology is still relevant for the abelian case. (orig.)

  4. Long-Term Biostability of Pet Vascular Prostheses

    Directory of Open Access Journals (Sweden)

    Florence Dieval

    2012-01-01

    Full Text Available PET Vascular prostheses are susceptible to physical modification and chemical degradation leading sometimes to global deterioration and rupture of the product. To understand the mechanisms of degradation, we studied 6 vascular prostheses that were explanted due to medical complications. We characterized their level of degradation by comparing them with a virgin prosthesis and carried out physicochemical and mechanical analyses. Results showed an important reduction of the fabric’s mechanical properties in specific areas. Moreover, PET taken from these areas exhibited structural anomalies and was highly degraded even in virgin prostheses. These results suggest that vascular prostheses have weak areas prior to implantation and that these areas are much more prone to in vivo degradation by human metabolism. Manufacturing process could be responsible for these weaknesses as well as designing of the compound. Therefore, we suggest that a more controlled manufacturing process could lead to a vascular prosthesis with enhanced lifespan.

  5. Interior Alaska Bouguer Gravity Anomaly

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — A 1 kilometer Complete Bouguer Anomaly gravity grid of interior Alaska. Only those grid cells within 10 kilometers of a gravity data point have gravity values....

  6. Interior Alaska Bouguer Gravity Anomaly

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — A 1 kilometer Complete Bouguer Anomaly gravity grid of interior Alaska. All grid cells within the rectangular data area (from 61 to 66 degrees North latitude and...

  7. On renormalization of axial anomaly

    International Nuclear Information System (INIS)

    It is shown that multiplicative renormalization of the axial singlet current results in renormalization of the axial anomaly in all orders of perturbation theory. It is a necessary condition for the Adler - Bardeen theorem being valid. 10 refs.; 2 figs

  8. The Passive Aggressive Conflict Cycle

    Science.gov (United States)

    Whitson, Signe

    2013-01-01

    Understanding the Passive Aggressive Conflict Cycle (PACC) helps observers to be able to look beyond behavior and better understand what is occurring beneath the surface. This article presents a real-life example of a seemingly minor conflict between a teacher and child that elicited an apparent major overreaction by the adult. Also provided is a…

  9. Aggressive angiomyxoma of the thigh

    International Nuclear Information System (INIS)

    Aggressive angiomyxoma is a rare tumour that typically occurs in the perineum in women of reproductive age. A small number of cases occurring in men have been reported, all of which were located in the low pelvis, perineum or scrotum. While benign, the tumour is locally infiltrative and consequently has a high rate of local recurrence following surgery; therefore, accurate pre-operative diagnosis is important. The characteristic location of these tumours in the low pelvis or perineum has led to speculation that aggressive angiomyxomas arise from a mesenchymal cell that is unique to the perineum. We describe a case of aggressive angiomyxoma arising in the thigh of a 54-year-old man, which we believe is the first reported instance of this rare neoplasm occurring remote from the pelvis or perineum in a male patient. Cross-sectional imaging demonstrated a well-defined mass that had low density on CT and high intensity on fluid-sensitive MR sequences. Biopsy was non-diagnostic and excision was performed. At histological analysis, the tumour exhibited the characteristic features of aggressive angiomyxoma, with bland spindle cells and large, hyalinised blood vessels in a hypocellular myxoid matrix. Extensive immunohistochemical staining further supported the diagnosis. While the imaging features of these tumours are non-specific and suggestive of myxoid neoplasms, the diagnosis should be considered whenever biopsy of a myxoid-appearing mass yields hypocellular, non-diagnostic material, despite adequate sampling. (orig.)

  10. Aggressive angiomyxoma of the thigh

    Energy Technology Data Exchange (ETDEWEB)

    Heffernan, E.J.; Alkubaidan, F.O.; Munk, P.L. [Vancouver General Hospital, Department of Radiology, Vancouver, BC (Canada); University of British Columbia, Vancouver, BC (Canada); Hayes, M.M. [BC Cancer Agency, Department of Pathology, Vancouver, BC (Canada); Clarkson, P.W. [BC Cancer Agency, Department of Surgery, Radiation Oncology and Developmental Radiotherapeutics, Vancouver, BC (Canada)

    2008-07-15

    Aggressive angiomyxoma is a rare tumour that typically occurs in the perineum in women of reproductive age. A small number of cases occurring in men have been reported, all of which were located in the low pelvis, perineum or scrotum. While benign, the tumour is locally infiltrative and consequently has a high rate of local recurrence following surgery; therefore, accurate pre-operative diagnosis is important. The characteristic location of these tumours in the low pelvis or perineum has led to speculation that aggressive angiomyxomas arise from a mesenchymal cell that is unique to the perineum. We describe a case of aggressive angiomyxoma arising in the thigh of a 54-year-old man, which we believe is the first reported instance of this rare neoplasm occurring remote from the pelvis or perineum in a male patient. Cross-sectional imaging demonstrated a well-defined mass that had low density on CT and high intensity on fluid-sensitive MR sequences. Biopsy was non-diagnostic and excision was performed. At histological analysis, the tumour exhibited the characteristic features of aggressive angiomyxoma, with bland spindle cells and large, hyalinised blood vessels in a hypocellular myxoid matrix. Extensive immunohistochemical staining further supported the diagnosis. While the imaging features of these tumours are non-specific and suggestive of myxoid neoplasms, the diagnosis should be considered whenever biopsy of a myxoid-appearing mass yields hypocellular, non-diagnostic material, despite adequate sampling. (orig.)

  11. Second order transport from anomalies

    OpenAIRE

    Sayantani Bhattacharyya; David, Justin R.; Somyadip Thakur

    2013-01-01

    We study parity odd transport at second order in derivative expansion for a non-conformal charged fluid. We see that there are 27 parity odd transport coefficients, of which 12 are non-vanishing in equilibrium. We use the equilibrium partition function method to express 7 of these in terms of the anomaly, shear viscosity, charge diffusivity and thermodynamic functions. The remaining 5 are constrained by 3 relations which also involve the anomaly. We derive Kubo formulae for 2 of the transport...

  12. Boundary Anomalies and Correlation Functions

    OpenAIRE

    Huang, Kuo-Wei(C.N. Yang Institute for Theoretical Physics, Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY, 11794, U.S.A.)

    2016-01-01

    It was shown recently that boundary terms of conformal anomalies recover the universal contribution to the entanglement entropy and also play an important role in the boundary monotonicity theorem of odd-dimensional quantum field theories. Motivated by these results, we investigate relationships between boundary anomalies and the stress tensor correlation functions in conformal field theories. In particular, we focus on how the conformal Ward identity and the renormalization group equation ar...

  13. Gravitational anomaly and transport phenomena

    OpenAIRE

    Landsteiner, Karl; Megías Fernández, Eugenio; Pena-Benítez, Francisco

    2011-01-01

    Quantum anomalies give rise to new transport phenomena. In particular, a magnetic field can induce an anomalous current via the chiral magnetic effect and a vortex in the relativistic fluid can also induce a current via the chiral vortical effect. The related transport coefficients can be calculated via Kubo formulas. We evaluate the Kubo formula for the anomalous vortical conductivity at weak coupling and show that it receives contributions proportional to the gravitational anomaly coefficie...

  14. Satellite elevation magnetic anomaly maps

    Science.gov (United States)

    Braile, L. W.; Hinze, W. J. (Principal Investigator)

    1982-01-01

    The problem of inverting 2 deg average MAGSAT scalar anomalies for the region 80 W, 60 E longitude and 40 S, 70 N latitude was attempted on the LARS computer; however, the effort was aborted due to insufficient allocation of CPU-time. This problem is currently being resubmitted and should be implemented shortly for quantitative comparison with free-air gravity anomaly, geothermal, and tectonic data.

  15. Poikiloderma vasculare atrophicans

    Directory of Open Access Journals (Sweden)

    Padmavathy L

    1994-01-01

    Full Text Available A 65 year old lady presented with generalised pruritus and discolouration of skin and mucous membranes of 5 years duration. The histopathology from the cutaneous lesions revealed features suggestive of poikiloderma vasculare atrophicans (PVA. Investigations did not reveal any underlying connective tissue disease,lymphoma or systemic disease. A diagnosis of idiopathic poikiloderma vasculare atrophicans was made.

  16. Poikiloderma vasculare atrophicans

    OpenAIRE

    Padmavathy L; Prasad PVS; Prasanna K; Rao L

    1994-01-01

    A 65 year old lady presented with generalised pruritus and discolouration of skin and mucous membranes of 5 years duration. The histopathology from the cutaneous lesions revealed features suggestive of poikiloderma vasculare atrophicans (PVA). Investigations did not reveal any underlying connective tissue disease,lymphoma or systemic disease. A diagnosis of idiopathic poikiloderma vasculare atrophicans was made.

  17. Space weather and space anomalies

    Directory of Open Access Journals (Sweden)

    L. I. Dorman

    2005-11-01

    Full Text Available A large database of anomalies, registered by 220 satellites in different orbits over the period 1971-1994 has been compiled. For the first time, data from 49 Russian Kosmos satellites have been included in a statistical analysis. The database also contains a large set of daily and hourly space weather parameters. A series of statistical analyses made it possible to quantify, for different satellite orbits, space weather conditions on the days characterized by anomaly occurrences. In particular, very intense fluxes (>1000 pfu at energy >10 MeV of solar protons are linked to anomalies registered by satellites in high-altitude (>15000 km, near-polar (inclination >55° orbits typical for navigation satellites, such as those used in the GPS network, NAVSTAR, etc. (the rate of anomalies increases by a factor ~20, and to a much smaller extent to anomalies in geostationary orbits, (they increase by a factor ~4. Direct and indirect connections between anomaly occurrence and geomagnetic perturbations are also discussed.

  18. Aeromagnetic anomalies over faulted strata

    Science.gov (United States)

    Grauch, V.J.S.; Hudson, Mark R.

    2011-01-01

    High-resolution aeromagnetic surveys are now an industry standard and they commonly detect anomalies that are attributed to faults within sedimentary basins. However, detailed studies identifying geologic sources of magnetic anomalies in sedimentary environments are rare in the literature. Opportunities to study these sources have come from well-exposed sedimentary basins of the Rio Grande rift in New Mexico and Colorado. High-resolution aeromagnetic data from these areas reveal numerous, curvilinear, low-amplitude (2–15 nT at 100-m terrain clearance) anomalies that consistently correspond to intrasedimentary normal faults (Figure 1). Detailed geophysical and rock-property studies provide evidence for the magnetic sources at several exposures of these faults in the central Rio Grande rift (summarized in Grauch and Hudson, 2007, and Hudson et al., 2008). A key result is that the aeromagnetic anomalies arise from the juxtaposition of magnetically differing strata at the faults as opposed to chemical processes acting at the fault zone. The studies also provide (1) guidelines for understanding and estimating the geophysical parameters controlling aeromagnetic anomalies at faulted strata (Grauch and Hudson), and (2) observations on key geologic factors that are favorable for developing similar sedimentary sources of aeromagnetic anomalies elsewhere (Hudson et al.).

  19. Vascular grading of angiogenesis

    DEFF Research Database (Denmark)

    Hansen, S; Grabau, D A; Sørensen, Flemming Brandt; Bak, M; Vach, W; Rose, C

    2000-01-01

    The study aimed to evaluate the prognostic value of angiogenesis by vascular grading of primary breast tumours, and to evaluate the prognostic impact of adding the vascular grade to the Nottingham Prognostic Index (NPI). The investigation included 836 patients. The median follow-up time was 11...... years and 4 months. The microvessels were immunohistochemically stained by antibodies against CD34. Angiogenesis was graded semiquantitatively by subjective scoring into three groups according to the expected number of microvessels in the most vascular tumour area. The vascular grading between observers...... had clinical impact for 24% of the patients, who had a shift in prognostic group, as compared to NPI, and implied a better prognostic dissemination. We concluded that the angiogenesis determined by vascular grading has independent prognostic value of clinical relevance for patients with breast cancer....

  20. [Vascular factors in glaucoma].

    Science.gov (United States)

    Mottet, B; Aptel, F; Geiser, M; Romanet, J P; Chiquet, C

    2015-12-01

    The exact pathophysiology of glaucoma is not fully understood. Understanding of the vascular pathophysiology of glaucoma requires: knowing the techniques for measuring ocular blood flow and characterizing the topography of vascular disease and the mechanisms involved in this neuropathy. A decreased mean ocular perfusion pressure and a loss of vascular autoregulation are implicated in glaucomatous disease. Early decrease in ocular blood flow has been identified in primary open-angle glaucoma and normal pressure glaucoma, contributing to the progression of optic neuropathy. The vascular damage associated with glaucoma is present in various vascular territories within the eye (from the ophthalmic artery to the retina) and is characterized by a decrease in basal blood flow associated with a dysfunction of vasoregulation. PMID:26597554

  1. An adult with central cyanosis and differential pulmonary vascularity

    Directory of Open Access Journals (Sweden)

    Rajiv Ananthakrishna

    2015-01-01

    Full Text Available A 22-year-old male patient presented with progressive effort intolerance of 2-years duration. Clinical findings and investigations were suggestive of Tetralogy of Fallot (TOF. In addition, there was a conspicuous difference in the pulmonary vascularity with oligemia on the left side and relative hypervascularity on the right side. The right pulmonary artery was arising from the proximal ascending aorta and the main pulmonary artery was continuing as the left pulmonary artery. The anomalous origin of a branch pulmonary artery from the aorta (AOPA is a rare cardiac anomaly. We report this condition in association with TOF, highlighting the differential pulmonary vascularity.

  2. The Utility of 64 Channel Multidetector CT Angiography for Evaluating the Renal Vascular Anatomy and Possible Variations: a Pictorial Essay

    International Nuclear Information System (INIS)

    The increased use of laparoscopic nephrectomy and nephron-sparing surgery has prompted the need for a more detailed radiological evaluation of the renal vascular anatomy. Multidetector CT angiography is a fast and accurate modality for assessing the precise anatomy of the renal vessels. In this pictorial review, we present the multidetector CT angiography appearances of the normal renal vascular anatomy and a spectrum of various anomalies that require accurate vascular depiction before undergoing surgical treatment

  3. Aggressive Driving Behavior: Undergraduate Students Study

    OpenAIRE

    Rungson Chomeya

    2010-01-01

    Problem statement: The main purposes of this research were (1) to study the aggressive driving behavior of graduate students, (2) to develop aggressive driving behavior standard test, (3) to compare the aggressive driving behavior between gender, years of study, academic achievement, driving confidence and driving experience and (4) to study the relationship among aggressive driving behavior, driving confidence, driving experience and accident experience. Approach: The subjects consisted of 4...

  4. Neurobiology of escalated aggression and violence

    NARCIS (Netherlands)

    Miczek, Klaus A.; de Almeida, Rosa M. M.; Kravitz, Edward A.; Rissman, Emilie F.; de Boer, Sietse F.; Raine, Adrian

    2007-01-01

    Psychopathological violence in criminals and intense aggression in fruit flies and rodents are studied with novel behavioral, neurobiological, and genetic approaches that characterize the escalation from adaptive aggression to violence. One goal is to delineate the type of aggressive behavior and it

  5. Understanding and Preventing Aggressive Responses in Youth.

    Science.gov (United States)

    Studer, Jeannine

    1996-01-01

    Fighting violence requires a networking approach among schools, community, and parents. This article advises elementary school counselors: (a) focus on the causes of aggression; (b) identify children with the propensity for behaving aggressively; and (c) prevent aggressive responses in children and adolescents by introducing techniques and…

  6. Aggression in the Dreams of Blind Women.

    Science.gov (United States)

    Kirtley, Donald D.; Sabo, Kenneth T.

    1983-01-01

    Aggressive content of dreams was compared for 11 visually handicapped adult females and normally sighted college females. Dream diaries were content-analyzed by means of the aggression scale of the Hall-Van de Castle content-analysis system. Visually handicapped adults, as a group, exhibited far more verbal and covert aggression. (Author/CL)

  7. Fantasy Aggression and the Catharsis Phenomenon

    Science.gov (United States)

    Spiegel, Sharon Baron; Zelin, Martin

    1973-01-01

    The purpose of this study was to explore the effects of fantasy aggression on blood pressure, affective states, and probability of subsequent aggression. The results are inconclusive because of the limited range of fantasy stimuli used and the short amount of time allowed for aggression to occur. (Author/KM)

  8. Prenatal sonographic diagnosis of focal musculoskeletal anomalies

    Energy Technology Data Exchange (ETDEWEB)

    Ryu, Jung Kyu; Cho, Jeong Yeon; Lee, Young Ho; Kim, Ei Jeong; Chun, Yi Kyeong [Samsung Cheil Hospital, Sungkyunkwan University School of Medicine, Seoul (Korea, Republic of)

    2002-09-15

    Focal musculoskeletal anomalies are various and may be an isolated finding or may be found in conjunction with numerous associations, including genetic syndromes, Karyotype abnormals, central nervous system anomalies and other general musculoskeletal disorders. Early prenatal diagnosis of these focal musculoskeletal anomalies nor only affects prenatal care and postnatal outcome but also helps in approaching other numerous associated anomalies.

  9. Social Aggression on Television and Its Relationship to Children's Aggression in the Classroom

    Science.gov (United States)

    Martins, Nicole; Wilson, Barbara J.

    2012-01-01

    A survey was conducted with over 500 children in grades K-5 to examine whether exposure to socially aggressive content was related to children's use of social aggression. The results of the survey revealed a significant relationship between exposure to televised social aggression and increased social aggression at school, but only for girls and…

  10. Pediatric vascular access

    International Nuclear Information System (INIS)

    Pediatric interventional radiologists are ideally suited to provide vascular access services to children because of inherent safety advantages and higher success from using image-guided techniques. The performance of vascular access procedures has become routine at many adult interventional radiology practices, but this service is not as widely developed at pediatric institutions. Although interventional radiologists at some children's hospitals offer full-service vascular access, there is little or none at others. Developing and maintaining a pediatric vascular access service is a challenge. Interventionalists skilled in performing such procedures are limited at pediatric institutions, and institutional support from clerical staff, nursing staff, and technologists might not be sufficiently available to fulfill the needs of such a service. There must also be a strong commitment by all members of the team to support such a demanding service. There is a slippery slope of expected services that becomes steeper and steeper as the vascular access service grows. This review is intended primarily as general education for pediatric radiologists learning vascular access techniques. Additionally, the pediatric or adult interventional radiologist seeking to expand services might find helpful tips. The article also provides education for the diagnostic radiologist who routinely interprets radiographs containing vascular access devices. (orig.)

  11. Pediatric vascular access

    Energy Technology Data Exchange (ETDEWEB)

    Donaldson, James S. [Northwestern University, Feinberg School of Medicine, Department of Medical Imaging, Children' s Memorial Hospital, Chicago, IL (United States)

    2006-05-15

    Pediatric interventional radiologists are ideally suited to provide vascular access services to children because of inherent safety advantages and higher success from using image-guided techniques. The performance of vascular access procedures has become routine at many adult interventional radiology practices, but this service is not as widely developed at pediatric institutions. Although interventional radiologists at some children's hospitals offer full-service vascular access, there is little or none at others. Developing and maintaining a pediatric vascular access service is a challenge. Interventionalists skilled in performing such procedures are limited at pediatric institutions, and institutional support from clerical staff, nursing staff, and technologists might not be sufficiently available to fulfill the needs of such a service. There must also be a strong commitment by all members of the team to support such a demanding service. There is a slippery slope of expected services that becomes steeper and steeper as the vascular access service grows. This review is intended primarily as general education for pediatric radiologists learning vascular access techniques. Additionally, the pediatric or adult interventional radiologist seeking to expand services might find helpful tips. The article also provides education for the diagnostic radiologist who routinely interprets radiographs containing vascular access devices. (orig.)

  12. The frontal lobe and aggression

    OpenAIRE

    SÉGUIN, JEAN R.

    2009-01-01

    Frontal lesions often lead to psychosocial problems. It is not surprising that frontal lobe dysfunctions have been proposed to underlie antisocial behaviour in individuals without apparent lesions. However, physical aggression and violence have never been systematically related to acquired lesions. Whereas, traditional neuropsychological testing identifies problems in cognitive and emotional information processing, recent brain-imaging studies have revealed both the frontal structural and fun...

  13. Prenatal Sonographic Diagnosis of Focal Musculoskeletal Anomalies

    OpenAIRE

    Ryu, Jung Kyu; Cho, Jeong Yeon; Choi, Jong Sun

    2003-01-01

    Focal musculoskeletal anomalies vary, and can manifest as part of a syndrome or be accompanied by numerous other conditions such as genetic disorders, karyotype abnormalities, central nervous system anomalies and other skeletal anomalies. Isolated focal musculoskeletal anomaly does, however, also occur; its early prenatal diagnosis is important in deciding prenatal care, and also helps in counseling parents about the postnatal effects of numerous possible associated anomalies. We have encount...

  14. GEOMAGNETIC ANOMALY FIELD VECTOR OFF WESTERN AUSTRALIA

    OpenAIRE

    ノギ, ヨシフミ; エグチ, ヨシアキ; セアマ, ノブカズ; イセザキ, ノブヒロ; Yoshifumi, NOGI; Yoshiaki, EGUCHI; Nobukazu, SEAMA; Nobuhiro, ISEZAKI

    1993-01-01

    Vector data of the geomagnetic anomaly field were obtained during the 32nd Japanese Antarctic Research Expedition (JARE-32) off Western Australia. The strikes of the magnetic boundaries at their position were derived from vector data of the geomagnetic anomaly field. These strikes were interpreted as the directions of magnetic anomaly lineations originated either by seafloor spreading (seafloor spreading anomaly) or by morphological structures (structural magnetic anomaly). Some strikes of st...

  15. PSEUDO MAGNETIC ANOMALIES IN THE ANTARCTIC SEA

    OpenAIRE

    マツモト, タケシ; カミヌマ, カツタダ; Takeshi, MATSUMOTO; Katsutada, Kaminuma

    1988-01-01

    Pseudo magnetic anomaly in the Antarctic Sea has been calculated using the gravity data derived from altimetric geoid. Comparison of the pseudo magnetic anomaly thus calculated with the theoretical magnetic anomaly predicted from topography has been made with respect to the large fracture zones composed of short-wavelength ridges and troughs in the Southeastern Pacific, which shows that these two anomalies coincide well with each other. Gravity anomaly calculated from topography only also coi...

  16. Imaging features of aggressive angiomyxoma

    Energy Technology Data Exchange (ETDEWEB)

    Jeyadevan, N.N.; Sohaib, S.A.A.; Thomas, J.M.; Jeyarajah, A.; Shepherd, J.H.; Fisher, C

    2003-02-01

    AIM: To describe the imaging features of aggressive angiomyxoma in a rare benign mesenchymal tumour most frequently arising from the perineum in young female patients. MATERIALS AND METHODS: We reviewed the computed tomography (CT) and magnetic resonance (MR) imaging features of patients with aggressive angiomyxoma who were referred to our hospital. The imaging features were correlated with clinical information and pathology in all patients. RESULTS: Four CT and five MR studies were available for five patients (all women, mean age 39, range 24-55). Three patients had recurrent tumour at follow-up. CT and MR imaging demonstrated a well-defined mass-displacing adjacent structures. The tumour was of low attenuation relative to muscle on CT. On MR, the tumour was isointense relative to muscle on T1-weighted image, hyperintense on T2-weighted image and enhanced avidly after gadolinium contrast with a characteristic 'swirled' internal pattern. MR imaging demonstrates the extent of the tumour and its relation to the pelvic floor. Recurrent tumour has a similar appearance to the primary lesion. CONCLUSION: The MR appearances of aggressive angiomyxomas are characteristic, and the diagnosis should be considered in any young woman presenting with a well-defined mass arising from the perineum. Jeyadevan, N. N. etal. (2003). Clinical Radiology58, 157--162.

  17. Imaging features of aggressive angiomyxoma

    International Nuclear Information System (INIS)

    AIM: To describe the imaging features of aggressive angiomyxoma in a rare benign mesenchymal tumour most frequently arising from the perineum in young female patients. MATERIALS AND METHODS: We reviewed the computed tomography (CT) and magnetic resonance (MR) imaging features of patients with aggressive angiomyxoma who were referred to our hospital. The imaging features were correlated with clinical information and pathology in all patients. RESULTS: Four CT and five MR studies were available for five patients (all women, mean age 39, range 24-55). Three patients had recurrent tumour at follow-up. CT and MR imaging demonstrated a well-defined mass-displacing adjacent structures. The tumour was of low attenuation relative to muscle on CT. On MR, the tumour was isointense relative to muscle on T1-weighted image, hyperintense on T2-weighted image and enhanced avidly after gadolinium contrast with a characteristic 'swirled' internal pattern. MR imaging demonstrates the extent of the tumour and its relation to the pelvic floor. Recurrent tumour has a similar appearance to the primary lesion. CONCLUSION: The MR appearances of aggressive angiomyxomas are characteristic, and the diagnosis should be considered in any young woman presenting with a well-defined mass arising from the perineum. Jeyadevan, N. N. etal. (2003). Clinical Radiology58, 157--162

  18. Rural neighborhoods and child aggression.

    Science.gov (United States)

    Bowen, Natasha K; Wretman, Christopher J

    2014-12-01

    Structural equation modeling with latent variables was used to evaluate the direct and mediated effects of a neighborhood risk factor (negative teen behaviors) on the parent-report aggressive behavior of 213 students in grades 3 through 5 attending a school in a low-income, rural community. Contagion and social control hypotheses were examined as well as hypotheses about whether the neighborhood served as a microsystem or exosystem for rural pre-adolescents. Analyses took into account the clustering of students and ordinal nature of the data. Findings suggest that rural neighborhoods may operate as both a microsystem and exosystem for children, with direct contagion effects on their aggressive behaviors as well as indirect social control effects through parenting practices. Direct effects on aggression were also found for parenting practices and child reports of friends' negative behaviors. Pre-adolescence may be a transitional stage, when influences of the neighborhood on child behavior begin to compete with influences of caregivers. Findings can inform the timing and targets of violence prevention in rural communities. PMID:25205545

  19. Aggression: peculiarities of manifestation and coping strategies in adolescence

    OpenAIRE

    Budykin A.V.; Budykin S.V.; Zhigachev A.S.

    2014-01-01

    Aggression management is becoming increasingly important task in modern society, as the number of situations that provoke aggression increases. Particular attention should be paid to aggression in adolescence. The world economic crisis contributes to the increase in the level of aggressiveness. The incidence of auto-aggression also increases. Suppressed aggression leads to the development of psychosomatic disorders. Experts agree that aggression is bad, but just suppressing aggressive reactio...

  20. Global gravitational anomalies and transport

    CERN Document Server

    Chowdhury, Subham Dutta

    2016-01-01

    We investigate the constraints imposed by global gravitational anomalies on parity odd induced transport coefficients in even dimensions for theories with chiral fermions, gravitinos and self dual tensors. The $\\eta$-invariant for the large diffeomorphism corresponding to the $T$ transformation on a torus constraints the coefficients in the thermal effective action up to mod 2. We show that the result obtained for the parity odd transport for gravitinos using global anomaly matching is consistent with the direct perturbative calculation. In $d=6$ we see that the second Pontryagin class in the anomaly polynomial does not contribute to the $\\eta$-invariant which provides a topological explanation of this observation in the `replacement rule'. We then perform a direct perturbative calculation for the contribution of the self dual tensor in $d=6$ to the parity odd transport coefficient using the Feynman rules proposed by Gaum\\'{e} and Witten. The result for the transport coefficient agrees with that obtained usin...

  1. Graph anomalies in cyber communications

    Energy Technology Data Exchange (ETDEWEB)

    Vander Wiel, Scott A [Los Alamos National Laboratory; Storlie, Curtis B [Los Alamos National Laboratory; Sandine, Gary [Los Alamos National Laboratory; Hagberg, Aric A [Los Alamos National Laboratory; Fisk, Michael [Los Alamos National Laboratory

    2011-01-11

    Enterprises monitor cyber traffic for viruses, intruders and stolen information. Detection methods look for known signatures of malicious traffic or search for anomalies with respect to a nominal reference model. Traditional anomaly detection focuses on aggregate traffic at central nodes or on user-level monitoring. More recently, however, traffic is being viewed more holistically as a dynamic communication graph. Attention to the graph nature of the traffic has expanded the types of anomalies that are being sought. We give an overview of several cyber data streams collected at Los Alamos National Laboratory and discuss current work in modeling the graph dynamics of traffic over the network. We consider global properties and local properties within the communication graph. A method for monitoring relative entropy on multiple correlated properties is discussed in detail.

  2. Antisocial personality disorder, alcohol, and aggression.

    Science.gov (United States)

    Moeller, F G; Dougherty, D M

    2001-01-01

    Epidemiologic studies and laboratory research consistently link alcohol use with aggression. Not all people, however, exhibit increased aggression under the influence of alcohol. Recent research suggests that people with antisocial personality disorder (ASPD) may be more prone to alcohol-related aggression than people without ASPD. As a group, people with ASPD have higher rates of alcohol dependence and more alcohol-related problems than people without ASPD. Likewise, in laboratory studies, people with ASPD show greater increases in aggressive behavior after consuming alcohol than people without ASPD. The association between ASPD and alcohol-related aggression may result from biological factors, such as ASPD-related impairments in the functions of certain brain chemicals (e.g., serotonin) or in the activities of higher reasoning, or "executive," brain regions. Alternatively, the association between ASPD and alcohol-related aggression may stem from some as yet undetermined factor(s) that increase the risk for aggression in general. PMID:11496966

  3. Congenital Vascular Malformation

    Science.gov (United States)

    ... clots, obstruction of major vessels, causing progressive limb asymmetry by overgrowth, and for cosmetic indications or because ... t he Vascular Disease Foundation (VDF) develops educational information and initiatives for patients, their families and friends, ...

  4. Vascular Access for Hemodialysis

    Science.gov (United States)

    ... for short-term use. [ Top ] What is an arteriovenous fistula? An AV fistula is a connection, made by ... to remove and return blood during hemodialysis. An arteriovenous (AV) fistula is a connection, made by a vascular surgeon, ...

  5. Heart and vascular services

    Science.gov (United States)

    ... Repair of aneurysms (dilated/enlarged portions) of the aorta and its branches Procedures may also be used ... Nutrition and lifestyle counseling, including smoking cessation and diabetes education Supervised exercise Alternative Names Circulatory system; Vascular ...

  6. Management of Vascular Malformations

    Directory of Open Access Journals (Sweden)

    Sadanori Akita, MD, PhD

    2014-03-01

    Conclusions: Treatment of vascular malformations is an integral part of multidisciplinary approaches. Venous malformations are more frequent in combination surgery, and if there are fewer complications, the patients’ satisfaction increases.

  7. Developmental venous anomaly in the newborn brain

    International Nuclear Information System (INIS)

    Cerebral developmental venous anomaly (DVA) is considered a benign anatomical variant of parenchymal venous drainage; it is the most common vascular malformation seen in the adult brain. Despite its assumed congenital origin, little is known about DVA in the neonatal brain. We report here the first cohort study of 14 neonates with DVA. Fourteen infants (seven preterm) with DVA diagnosed neonatally using cranial ultrasound (cUS) and magnetic resonance imaging (MRI) from three tertiary neonatal units over 14 years are reviewed. DVA was first detected on cUS in 6 and on MRI in 8 of the 14 infants. The cUS appearances of DVA showed a focal fairly uniform area of increased echogenicity, often (86 %) adjacent to the lateral ventricle and located in the frontal lobe (58 %). Blood flow in the dilated collector vein detected by Doppler ultrasound (US) varied between cases (venous flow pattern in ten and arterialized in four). The appearance on conventional MRI was similar to findings in adults. Serial imaging showed a fairly constant appearance to the DVAs in some cases while others varied considerably regarding anatomical extent and flow velocity. This case series underlines that a neonatal diagnosis of DVA is possible with carefully performed cUS and MRI and that DVA tends to be an incidental finding with a diverse spectrum of imaging appearances. Serial imaging suggests that some DVAs undergo dynamic changes during the neonatal period and early infancy; this may contribute to why diagnosis is rare at this age. (orig.)

  8. Developmental venous anomaly in the newborn brain

    Energy Technology Data Exchange (ETDEWEB)

    Horsch, S. [Erasmus MC-Sophia Children' s Hospital, Department of Neonatology, Rotterdam (Netherlands); Helios Klinikum Berlin-Buch, Department of Neonatology, Berlin (Germany); Govaert, P. [Erasmus MC-Sophia Children' s Hospital, Department of Neonatology, Rotterdam (Netherlands); Cowan, F.M. [Hammersmith Hospital, Department of Paediatrics, Imperial College Healthcare NHS Trust, London (United Kingdom); Benders, M.J.N.L.; Groenendaal, F.; Vries, L.S. de [University Medical Centre Utrecht, Wilhelmina Children' s Hospital, Department of Neonatology, Utrecht (Netherlands); Lequin, M.H. [Erasmus MC/Sophia Children' s Hospital, Department of Paediatric Radiology, Rotterdam (Netherlands); Saliou, G. [University Hospital, Department of Neuroradiology, Le Kremlin-Bicetre (France)

    2014-07-15

    Cerebral developmental venous anomaly (DVA) is considered a benign anatomical variant of parenchymal venous drainage; it is the most common vascular malformation seen in the adult brain. Despite its assumed congenital origin, little is known about DVA in the neonatal brain. We report here the first cohort study of 14 neonates with DVA. Fourteen infants (seven preterm) with DVA diagnosed neonatally using cranial ultrasound (cUS) and magnetic resonance imaging (MRI) from three tertiary neonatal units over 14 years are reviewed. DVA was first detected on cUS in 6 and on MRI in 8 of the 14 infants. The cUS appearances of DVA showed a focal fairly uniform area of increased echogenicity, often (86 %) adjacent to the lateral ventricle and located in the frontal lobe (58 %). Blood flow in the dilated collector vein detected by Doppler ultrasound (US) varied between cases (venous flow pattern in ten and arterialized in four). The appearance on conventional MRI was similar to findings in adults. Serial imaging showed a fairly constant appearance to the DVAs in some cases while others varied considerably regarding anatomical extent and flow velocity. This case series underlines that a neonatal diagnosis of DVA is possible with carefully performed cUS and MRI and that DVA tends to be an incidental finding with a diverse spectrum of imaging appearances. Serial imaging suggests that some DVAs undergo dynamic changes during the neonatal period and early infancy; this may contribute to why diagnosis is rare at this age. (orig.)

  9. A case of megadolichobasilar anomaly complicated with abdominal aortic aneurysm

    International Nuclear Information System (INIS)

    A 41 year-old hypertensive male was admitted because of progressing left hemiparesis and dysarthria. CT demonstrated hyperdense mass with partial contast enhancement, extending from the level of lower pons to that of suprasellar cistern. Reconstructed imaging of CT showed a huge mass lesion, in which a wide curvilinear hyperdensity was demonstrated by contrast enhancement. Cerebral angiography revealed markedly elongated and dilated basilar and carotid arteries. From these findings, the prepontine hyperdense mass lesion was diagnosed as megadolichobasilar anomaly with marked wall thickening. Findings of abdominal aortic angiography and abdominal CT suggested the presence of marked atherosclerosis and abdominal aortic aneurysm with mural thrombi. Six months after initial admission, neurological symptoms gradually deteriorated and CT showed dilatation of the 3rd and lateral ventricles, suggesting the development of hydrocephalus due to compression of the aqueduct by the megadolichobasilar anomaly. Magnetic resonance imaging at this time demonstrated more details of the lesion and the deformity of the brain stem, which was not detected by conventional CT. Complications of vascular anomalies other than intracranial vasculature, such as aortic aneurysm, have also been repoted. After the introduction of CT, demonstration of a long, wide, curvilinear structure with abnormal density in the prepontine region has been reported to be diagnostic for the megadolichobasilar anomaly. This patient has had hypertension for 10 years, which probably due to chronic nephritis. He had no definite findings for angitis, but had abdominal aortic aneurysm with mural thrombi. From these findings, atherosclerosis of large vessels may have played one of the roles in the pathogenesis of this anomaly in the present case. (J.P.N.)

  10. Vascular Effects of Histamine.

    Science.gov (United States)

    Ebeigbe, Anthony B; Talabi, Olufunke O

    2014-01-01

    Four subtypes of receptors (H1, H2, H3 and H4) mediate the actions of histamine. In the vascular wall, the effects of histamine are mediated via H1 and H2 receptors and the actions are modulated by H3 receptor subtype located on presynaptic neurones. Alterations in vascular responses to histamine are associated with experimental as well as a human form of hypertension, suggesting a role for histanine in cardiovascular regulation. PMID:26196559

  11. Digital vascular imaging (DVI)

    International Nuclear Information System (INIS)

    Digitization of the video signals from an image intensifier/TV chain, followed by subtraction, contrast enchancement and reconversion to analogue signals, enables high quality angiographic images to be obtained from an intravenous injection of contrast medium. As the examination is basically noninvasive it can be used in outpatients. The possibilities of Digital Vascular Imaging are demonstrated by images obtained from the various vascular regions using a triple-mode 14 in. image intensifier with a Plumbicon. TV tube. (Auth.)

  12. Thrombolysis in vascular surgery

    OpenAIRE

    Smith, Linn

    2015-01-01

    Background and aims: Thrombolysis is in common use in the treatment of acute forms of vascular disease. It may be used both systemically and locally, in the latter case through an endovascular approach, socalled catheter-directed thrombolysis. The aims of this thesis were to investigate how thrombolysis affects performance-related outcomes pertaining to vascular patency after thrombolysis, and how it affects patient safety and the development of complications. Metho...

  13. Boundary Anomalies and Correlation Functions

    CERN Document Server

    Huang, Kuo-Wei

    2016-01-01

    It was shown recently that boundary terms of conformal anomalies recover the universal contribution to the entanglement entropy and also play an important role in the boundary monotonicity theorem of odd-dimensional quantum field theories. Motivated by these results, we investigate relationships between boundary anomalies and the stress tensor correlation functions in conformal field theories. In particular, we focus on how the conformal Ward identity and the renormalization group equation are modified by boundary central charges. Renormalized stress tensors induced by boundary Weyl invariants are also discussed, with examples in spherical and cylindrical geometries.

  14. Holomorphic anomaly and matrix models

    CERN Document Server

    Eynard, B; Orantin, Nicolas; Eynard, Bertrand; Marino, Marcos; Orantin, Nicolas

    2007-01-01

    The genus g free energies of matrix models can be promoted to modular invariant, non-holomorphic amplitudes which only depend on the geometry of the classical spectral curve. We show that these non-holomorphic amplitudes satisfy the holomorphic anomaly equations of Bershadsky, Cecotti, Ooguri and Vafa. We derive as well holomorphic anomaly equations for the open string sector. These results provide evidence at all genera for the Dijkgraaf--Vafa conjecture relating matrix models to type B topological strings on certain local Calabi--Yau threefolds.

  15. [Zaidemberg's vascularized radial graft].

    Science.gov (United States)

    Saint-Cast, Y

    2010-12-01

    In 1991, Carlos Zaidemberg described a new technique to repair scaphoid non-unions with a vascularized bone graft harvested from the radial styloid process. An anatomic study based on 30 dissections after colorized latex injection established the constancy of the radial styloid process's artery, while showing that its origin, course and length were subject to variations. In a retrospective series of 38 cases over a period of 10 years, the vascularized bone graft was indicated for: (1) scaphoid non-union with the presence of avascular changes of the proximal fragment (23 cases); (2) failed prior reconstruction with bone graft and internal fixation (nine cases); (3) degenerative styloid-scaphoid arthritis (three cases); (4) fracture on Preiser dystrophy (three cases). The five steps of the simplified operative technique without dissection of the vascular pedicle include: (1) longitudinal dorso-radial approach, identification of the periosteal portion of the radial styloid process artery; (2) incision of the first and second compartments, longitudinal arthrotomy under the second compartment; (3) styloidectomy and transversal resection of the scaphoid non-union and sclerotic bone; (4) elevation of the vascularized bone graft; (5) transversal and radial insertion of the vascularized bone graft, osteosynthesis by two or three K-wire touching the scaphoid's radial edge. Scaphoid union was obtained in 33 cases out of 38. The only postoperative complications were two transient radial paresthesia. The standardized surgical procedure using vascularized bone graft harvested from the radial styloid process provides an efficient scaphoid reconstruction. PMID:21087882

  16. Atypical Developmental Venous Anomaly Associated with Single Arteriovenous Fistula and Intracerebral Hemorrhage: a Case Demonstrated by Superselective Angiography

    International Nuclear Information System (INIS)

    We present a case of developmental venous anomaly associated with arteriovenous fistula supplied by a single arterial feeder adjacent to a large acute intracerebral hemorrhage. The arteriovenous fistula was successfully obliterated by superselective embolization while completely preserving the developmental venous anomaly. Two similar cases, including superselective angiographic findings, have been reported in the literature; however, we describe herein superselective angiographic findings in more detail and demonstrate the arteriovenous shunt more clearly than the previous reports. In addition, a literature review was performed to discuss the association of a developmental venous anomaly with vascular lesions.

  17. Atypical Developmental Venous Anomaly Associated with Single Arteriovenous Fistula and Intracerebral Hemorrhage: a Case Demonstrated by Superselective Angiography

    Energy Technology Data Exchange (ETDEWEB)

    Roh, Jae Eun; Cha, Sang Hoon; Lee, Seung Young; Jeon, Min Hee; Cho, Bum Sang; Kang, Min Ho; Min, Kyung Soo [Chungbuk National University Hospital, Cheongju (Korea, Republic of)

    2012-01-15

    We present a case of developmental venous anomaly associated with arteriovenous fistula supplied by a single arterial feeder adjacent to a large acute intracerebral hemorrhage. The arteriovenous fistula was successfully obliterated by superselective embolization while completely preserving the developmental venous anomaly. Two similar cases, including superselective angiographic findings, have been reported in the literature; however, we describe herein superselective angiographic findings in more detail and demonstrate the arteriovenous shunt more clearly than the previous reports. In addition, a literature review was performed to discuss the association of a developmental venous anomaly with vascular lesions.

  18. Student nurses' perceptions of aggression: An exploratory study of defensive styles, aggression experiences, and demographic factors.

    Science.gov (United States)

    Bilgin, Hulya; Keser Ozcan, Neslihan; Tulek, Zeliha; Kaya, Fadime; Boyacioglu, Nur Elcin; Erol, Ozgul; Arguvanli Coban, Sibel; Pazvantoglu, Ozan; Gumus, Kubra

    2016-06-01

    Throughout the clinical learning process, nursing students' perception of aggression might have implications in terms of their future professional behavior toward patients. Using a descriptive cross-sectional design, we investigated the relationships between student nurses' perceptions of aggression and their personal characteristics, defense styles, and a convenience sample of 1539 experiences of aggressive behavior in clinical practice. Information about the students' personal features, their clinical practice, and experiences of aggressive behavior was obtained by questionnaire. The Turkish version of the Perception of Aggression Scale and Defense Styles Questionnaire-40 were also used. Students were frequently exposed to verbal aggression from patients and their relatives. And perceived patient aggression negatively, perception of aggression were associated with sex, defense styles, feelings of safety, and experiences of aggressions during clinical practice. Of interest is the reality that student nurses should be prepared for untoward events during their training. PMID:26916604

  19. Gaugino-Assisted Anomaly Mediation

    International Nuclear Information System (INIS)

    We present a model of supersymmetry breaking mediated through a small extra dimension. Standard model matter multiplets and a supersymmetry-breaking (or ''hidden'') sector are confined to opposite four-dimensional boundaries while gauge multiplets live in the bulk. The hidden sector does not contain a singlet and the dominant contribution to gaugino masses is via anomaly-mediated supersymmetry breaking. Scalar masses get contributions from both anomaly mediation and a tiny hard breaking of supersymmetry by operators on the hidden-sector boundary. These operators contribute to scalar masses at one loop and in most of parameter space, their contribution dominates. Thus it is easy to make all squared scalar masses positive. As no additional fields or symmetries are required below the Planck scale, we consider this the simplest working model of anomaly mediation. The gaugino spectrum is left untouched and the phenomenology of the model is roughly similar to anomaly mediated supersymmetry breaking with a universal scalar mass added. We identify the main differences in the spectrum between this model and other approaches. We also discuss mechanisms for generating the μ term and constraints on additional bulk fields. (author)

  20. Gaugino-assisted anomaly mediation

    International Nuclear Information System (INIS)

    I present a model of supersymmetry breaking mediated through a small extra dimension. Standard model matter multiplets and a supersymmetry-breaking (or 'hidden') sector are confined to opposite four-dimensional boundaries while gauge multiplets live in the bulk. The hidden sector does not contain a singlet and the dominant contribution to gaugino masses is via anomaly-mediated supersymmetry breaking. Scalar masses get contributions from both anomaly mediation and a tiny hard breaking of supersymmetry by operators on the hidden-sector boundary. These operators contribute to scalar masses at one loop and in most of parameter space, their contribution dominates. Thus it is easy to make all squared scalar masses positive. As no additional fields or symmetries are required below the Planck scale, this is among the simplest working models of anomaly mediation. The gaugino spectrum is left untouched and the phenomenology of the model is roughly similar to anomaly mediated supersymmetry breaking with a universal scalar mass added. Finally, the main differences in the spectrum between this model and other approaches are identified. This talk is based on work [1] done in collaboration with David E. Kaplan

  1. Antioxidants and vascular health.

    Science.gov (United States)

    Bielli, Alessandra; Scioli, Maria Giovanna; Mazzaglia, Donatella; Doldo, Elena; Orlandi, Augusto

    2015-12-15

    Oxygen free radicals and other reactive oxygen species (ROS) are common products of normal aerobic cellular metabolism, but high levels of ROS lead to oxidative stress and cellular damage. Increased production of ROS favors vascular dysfunction, inducing altered vascular permeability and inflammation, accompanied by the loss of vascular modulatory function, the imbalance between vasorelaxation and vasoconstriction, and the aberrant expression of inflammatory adhesion molecules. Inflammatory stimuli promote oxidative stress generated from the increased activity of mitochondrial nicotinamide adenine dinucleotide phosphate oxidase, particularly of the Nox4 isoform, with the consequent impairment of mitochondrial β-oxidation. Vascular dysfunction due to the increase in Nox4 activity and ROS overproduction leads to the progression of cardiovascular diseases, diabetes, inflammatory bowel disease, and neurological disorders. Considerable research into the development of effective antioxidant therapies using natural derivatives or new synthetic molecules has been conducted. Antioxidants may prevent cellular damage by reducing ROS overproduction or interfering in reactions that involve ROS. Vitamin E and ascorbic acid are well known as natural antioxidants that counteract lipid peroxidative damage by scavenging oxygen-derived free radicals, thus restoring vascular function. Recently, preliminary studies on natural antioxidants such as goji berries, thymus, rosemary, green tea ginseng, and garlic have been conducted for their efficacy in preventing vascular damage. N-acetyl-cysteine and propionyl-L-carnitine are synthetic compounds that regulate ROS production by replacing endogenous antioxidants in both endothelial and smooth muscle cells. In this review, we consider the molecular mechanisms underlying the generation of oxidative stress-induced vascular dysfunction as well as the beneficial effects of antioxidant therapies. PMID:26585821

  2. CT assessment of tracheobronchial anomaly in left pulmonary artery sling

    Energy Technology Data Exchange (ETDEWEB)

    Zhong, Yu-Min M.; Zhu, Ming; Sun, Ai-Min M.; Wang, Qian [Shanghai Jiao Tong University School of Medicine, Department of Radiology, Shanghai Children' s Medical Center, Shanghai (China); Jaffe, Richard B. [Primary Children' s Medical Center, Department of Medical Imaging, Salt Lake City, UT (United States); Gao, Wei [Shanghai Jiao Tong University School of Medicine, Department of Cardiology, Shanghai Children' s Medical Center, Shanghai (China)

    2010-11-15

    The left pulmonary artery sling (LPAS) is a rare vascular anomaly where the left pulmonary artery arises from the right pulmonary artery, passes over the right bronchus, and goes posteriorly between the trachea and esophagus. The LPAS is frequently associated with cardiac and non-cardiac defects including tracheobronchial abnormalities. To evaluate the utility of multislice CT (MSCT) and helical CT (HCT) in diagnosing and defining the tracheobronchial anomaly and anatomic relationships between the trachea and aberrant left pulmonary artery. MSCT or HCT was performed in 27 children to determine the tracheobronchial anatomy and identify tracheobronchial stenosis. Eighteen children underwent surgery. According to the Wells [6] classification of LPAS, which includes two main types and two subtypes, there were eight cases of type 1A, five cases of type 1B, six cases of type 2A and eight cases of type 2B in this group. Twenty-four of the 27 children had substantial tracheobronchial stenosis. Four died before surgery; the 18 had reanastomosis of the left pulmonary artery. Five children also had tracheoplasty; three died after surgery. CT, especially MSCT, is an ideal modality for simultaneously identifying aberrant left pulmonary artery and any associated tracheobronchial anomaly. The Wells classification is useful for operative planning. (orig.)

  3. What lies beneath the face of aggression?

    Science.gov (United States)

    Carré, Justin M; Murphy, Kelly R; Hariri, Ahmad R

    2013-02-01

    Recent evidence indicates that a sexually dimorphic feature of humans, the facial width-to-height ratio (FWHR), is positively correlated with reactive aggression, particularly in men. Also, predictions about the aggressive tendencies of others faithfully map onto FWHR in the absence of explicit awareness of this metric. Here, we provide the first evidence that amygdala reactivity to social signals of interpersonal challenge may underlie the link between aggression and the FWHR. Specifically, amygdala reactivity to angry faces was positively correlated with aggression, but only among men with relatively large FWHRs. The patterns of association were specific to angry facial expressions and unique to men. These links may reflect the common influence of pubertal testosterone on craniofacial growth and development of neural circuitry underlying aggression. Amygdala reactivity may also represent a plausible pathway through which FWHR may have evolved to represent an honest indicator of conspecific threat, namely by reflecting the responsiveness of neural circuitry mediating aggressive behavior. PMID:22198969

  4. Understanding Aggressive Behavior Across the Life Span

    OpenAIRE

    Liu, Jianghong; Lewis, Gary; Evans, Lois

    2012-01-01

    Aggressive behavior is the observable manifestation of aggression and is often associated with developmental transitions and a range of medical and psychiatric diagnoses across the lifespan. As healthcare professionals involved in the medical and psychosocial care of patients from birth through death, nurses frequently encounter—and may serve as—both victims and perpetrators of aggressive behavior in the workplace. While the nursing literature has continually reported research on prevention a...

  5. What lies beneath the face of aggression?

    OpenAIRE

    Carré, Justin M.; Murphy, Kelly R.; Hariri, Ahmad R.

    2011-01-01

    Recent evidence indicates that a sexually dimorphic feature of humans, the facial width-to-height ratio (FWHR), is positively correlated with reactive aggression, particularly in men. Also, predictions about the aggressive tendencies of others faithfully map onto FWHR in the absence of explicit awareness of this metric. Here, we provide the first evidence that amygdala reactivity to social signals of interpersonal challenge may underlie the link between aggression and the FWHR. Specifically, ...

  6. Family Values and Female's Psychological Aggression

    OpenAIRE

    Ali Edalati; Ma'rof Redzuan; Mariani Mansor; Mansor A.   Talib

    2010-01-01

    Problem statement: The main objective of the current study is to determine the relationship between womens perceptions toward Iranian family values with psychological aggression. Approach: All of the randomly selected 337 wives who suffered from level of psychological aggression were included in this study. Straus questionnaire (CTS) is the method used to measure psychological aggression. It shows a negative relationship between family values (inequality in affairs and inequality in regulatio...

  7. Prosocial video games reduce aggressive cognitions

    OpenAIRE

    Greitemeyer, Tobias; Osswald, Silvia

    2009-01-01

    Abstract Previous research has shown that playing violent video games increased aggressive tendencies. However, as pointed out by the General Learning Model (GLM) (Buckley & Anderson, 2006), depending on their content, video games do not inevitably increase but may also decrease aggressive responses. Accordingly, the present research tested the hypothesis that playing prosocial video games decreases aggressive cognitions. In fact, playing a prosocial (relative to a neutral) video g...

  8. Aggressive posterior retinopathy of prematurity classification

    OpenAIRE

    A.V. Tereshchenko,; Yu. A. Belyy; M. S. Tereshchenkova; I. G. Trifanenkova

    2013-01-01

    ABSTRACT Based on dynamic monitoring of 133 premature infants (266 eyes) with aggressive posterior retinopathy of prematurity (ROP), digital retinoscopy and computer morphometry the disease clinical and morphometric features were revealed and systematized, and their consecutive replacement was fixed. As a result the separate classification of aggressive posterior disease was worked up. In aggressive posterior ROP course the next consecutive stages were marked out: subclinical, early ...

  9. Affective Dependence and Aggression: An Exploratory Study

    OpenAIRE

    Filippo Petruccelli; Pierluigi Diotaiuti; Valeria Verrastro; Irene Petruccelli; Roberta Federico; Giovanni Martinotti; Andrea Fossati; Massimo Di Giannantonio; Luigi Janiri

    2014-01-01

    Introduction. Emotionally dependent subjects may engage in controlling, restrictive, and aggressive behaviours, which limit their partner's autonomy. The underlying causes of such behaviours are not solely based on levels of aggression, but act as a mean of maintaining the subject's own sense of self-worth, identity, and general functioning. Objective. The aim of the paper is to explore the correlation between affective dependency and reactive/proactive aggression and to evaluate individual d...

  10. Neurobiological Basis of Reactive Aggression: A Review

    OpenAIRE

    Shiina A

    2015-01-01

    Reactive aggression is a response to salient threats that may have evolved as a strategy for survival. The likelihood of its outburst is mediated by several factors including the activity of serotonin and other neurotransmitters that regulate reactive aggression through the corticolimbic circuit. Specifically, this circuit is modulated by monoamine oxidase A (MAOA) such that low levels of activity incline an animal to impulsive behavior. Evidence also indicates that aggressive ...

  11. Aggression, anger and violence in South Africa

    OpenAIRE

    M.J. Masango

    2004-01-01

    This article traces the roots of aggression, anger and violence in South Africa and the rest of the world. The paper is divided into four parts: Aggression, Anger, Catharsis and Violence. As a result of violence against other human beings, especially women and children, a profound respect for human dignity has been lost. People have become extremely aggressive. The last few decades have created a culture of violence because of the suppression or oppression of feelings. The article argues that...

  12. Aggression and Brain Asymmetries: A Theoretical Review

    OpenAIRE

    Rohlfs , Paloma; Ramirez, J. Martin

    2006-01-01

    The relationship between aggression and brain asymmetries has not been studied enough. The association between both concepts can be approached from two different perspectives. One perspective points to brain asymmetries underlying the emotion of anger and consequently aggression in normal people. Another one is concerned with the existence of brain asymmetries in aggressive people (e.g., in the case of suicides or psychopathies). Research on emotional processing points out the confusion betw...

  13. Anomaly detection in online social networks

    CERN Document Server

    Savage, David; Yu, Xinghuo; Chou, Pauline; Wang, Qingmai

    2016-01-01

    Anomalies in online social networks can signify irregular, and often illegal behaviour. Anomalies in online social networks can signify irregular, and often illegal behaviour. Detection of such anomalies has been used to identify malicious individuals, including spammers, sexual predators, and online fraudsters. In this paper we survey existing computational techniques for detecting anomalies in online social networks. We characterise anomalies as being either static or dynamic, and as being labelled or unlabelled, and survey methods for detecting these different types of anomalies. We suggest that the detection of anomalies in online social networks is composed of two sub-processes; the selection and calculation of network features, and the classification of observations from this feature space. In addition, this paper provides an overview of the types of problems that anomaly detection can address and identifies key areas of future research.

  14. Video media-induced aggressiveness in children.

    Science.gov (United States)

    Cardwell, Michael Steven

    2013-09-01

    Transmission of aggressive behaviors to children through modeling by adults has long been a commonly held psychological concept; however, with the advent of technological innovations during the last 30 years, video media-television, movies, video games, and the Internet-has become the primary model for transmitting aggressiveness to children. This review explores the acquisition of aggressive behaviors by children through modeling behaviors in violent video media. The impact of aggressive behaviors on the child, the family, and society is addressed. Suggestive action plans to curb this societal ill are presented. PMID:24002556

  15. Aggression and coexistence in female caribou

    Science.gov (United States)

    Weckerly, Floyd W.; Ricca, Mark A.

    2014-01-01

    Female caribou (Rangifer tarandus) are highly gregarious, yet there has been little study of the behavioral mechanisms that foster coexistence. Quantifying patterns of aggression between male and female, particularly in the only cervid taxa where both sexes grow antlers, should provide insight into these mechanisms. We asked if patterns of aggression by male and female caribou followed the pattern typically noted in other polygynous cervids, in which males display higher frequencies and intensity of aggression. From June to August in 2011 and 2012, we measured the frequency and intensity of aggression across a range of group sizes through focal animal sampling of 170 caribou (64 males and 106 females) on Adak Island in the Aleutian Archipelago, Alaska. Males in same-sex and mixed-sex groups and females in mixed-sex groups had higher frequencies of aggression than females in same-sex groups. Group size did not influence frequency of aggression. Males displayed more intense aggression than females. Frequent aggression in mixed-sex groups probably reflects lower tolerance of males for animals in close proximity. Female caribou were less aggressive and more gregarious than males, as in other polygynous cervid species.

  16. Gibbon Aggression During Introductions: An International Survey.

    Science.gov (United States)

    Harl, Heather; Stevens, Lisa; Margulis, Susan W; Petersen, Jay

    2016-01-01

    Little is known regarding the prevalence of aggression seen during introductions of captive gibbons (Hylobatidae). In this study, an online survey was developed to quantify and collect contextual details regarding the frequency and types of aggression seen during introductions of captive gibbons (Hylobatidae). Nineteen percent of institutions (17 institutions) reported observing aggression, and 6 of these institutions recorded multiple instances of aggression, though a vast majority of these cases resulted in mild injuries or none at all. The female was the primary aggressor in 23% of cases, the male was the primary aggressor in 58% of cases, and both were the primary aggressor in 1 case. Although these aggressive interactions were often not associated with a known cause, 27% of cases were associated with food displacement. In most cases, management changes, including trying new pairings, greatly reduced situational aggression, suggesting that individual personalities may play a factor in aggression. These data begin to explain the extent of aggression observed in captive gibbons; future studies will address possible correlations with aggression and introduction techniques. PMID:26963568

  17. Discourses of aggression in forensic mental health

    DEFF Research Database (Denmark)

    Berring, Lene L; Pedersen, Liselotte; Buus, Niels

    2015-01-01

    aggression is communicated in forensic mental health nursing records. The aim of the study was to gain insight into the discursive practices used by forensic mental health nursing staff when they record observed aggressive incidents. Textual accounts were extracted from the Staff Observation Aggression Scale....... These antecedents, combined with the aggression incident itself, created stereotyping representations of forensic psychiatric patients as deviant, unpredictable and dangerous. Patient and staff identities were continually (re)produced by an automatic response from the staff that was solely focused on the patient...

  18. [Confrontation with aggression - psychopathological patterns of behavior].

    Science.gov (United States)

    Pauchard, J P

    1981-01-01

    Man in our society is less and less able to manage his own aggression or aggression of others. Psychopathologic patterns of reaction appearing thereby are demonstrated on the example of the soldier, and relations to stress theories are discussed. Conditions of formation and consequences of suppression of aggression are shown on the example of the recruit with fear of shooting or failure in basic training; similar manifestations in non-military life are referred to. The necessity of an education to adequate management of aggression is stressed. PMID:7313590

  19. Anomaly Constraints on Monopoles and Dyons

    OpenAIRE

    Csaki, Csaba; Terning, John; Shirman, Yuri

    2010-01-01

    Fermions with magnetic charges can contribute to anomalies. We derive the axial anomaly and gauge anomalies for monopoles and dyons, and find eight new gauge anomaly cancelation conditions in a general theory with both electric and magnetic charges. As a byproduct we also extend the Zwanziger two-potential formalism to include the theta parameter, and elaborate on the condition for CP invariance in theories with fermionic dyons.

  20. Effects of viewing relational aggression on television on aggressive behavior in adolescents: A three-year longitudinal study.

    Science.gov (United States)

    Coyne, Sarah M

    2016-02-01

    Most researchers on media and aggression have examined the behavioral effects of viewing physical aggression in the media. Conversely, in the current study, I examined longitudinal associations between viewing relational aggression on TV and subsequent aggressive behavior. Participants included 467 adolescents who completed a number of different questionnaires involving media and aggression at 3 different time points. Results revealed that viewing relational aggression on TV was longitudinally associated with future relational aggression. However, early levels of relational aggression did not predict future exposure to televised relational aggression. Conversely, there was a bidirectional relationship between TV violence and physical aggression over time. No longitudinal evidence was found for a general effect of viewing TV, as all significant media effects were specific to the type of aggression viewed. These results support the general aggression model and suggest that viewing relational aggression in the media can have a long-term effect on aggressive behavior during adolescence. PMID:26595354

  1. Fetal renal anomalies : diagnosis, management, and outcome

    NARCIS (Netherlands)

    Damen-Elias, Henrica Antonia Maria

    2004-01-01

    In two to three percent of fetuses structural anomalies can be found with prenatal ultrasound investigation. Anomalies of the urinary tract account for 15 to 20% of these anomalies with a detection rate of approximately of 90%. In Chapter 2, 3 and 4 we present reference curves for size and growth of

  2. Theory of Geological Anomaly in Remote Sensing

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    Geological anomaly is geological body or complex body with obviously different compositions, structures or orders of genesis as compared with those in the surrounding areas. Geological anomaly, restrained by the geological factors closely associated with ore-forming process, is an important clue to ore deposits. The geological anomaly serves as a geological sign to locate ore deposits. Therefore, it is very important to study how to define the characteristics of geological anomaly and further to locate the changes in these characteristics. In this paper, the authors propose the geological anomaly based on the remote-sensing images and data, and expound systematically such image features as scale, size, boundary, morphology and genesis of geological anomalies. Then the authors introduce the categorization of the geological anomalies according to their geneses. The image characteristics of some types of geological anomalies, such as the underground geological anomaly, are also explained in detail. Based on the remote-sensing interpretation of these geological anomalies, the authors conclude that the forecasting and exploration of ore deposits should be focused on the following three aspects: (1) the analysis of geological setting and geological anomaly; (2) the analysis of circular geological anomaly, and (3) the comprehensive forecasting of ore deposits and the research into multi-source information.

  3. Social Likeability, Subtypes of Aggression, and the Attributional Style of Aggressive Youth

    OpenAIRE

    Blier, Heather K.

    2001-01-01

    Recent efforts to understand and predict the onset and maintenance of aggression have considered the heterogeneity of this behavior. Dodge (1980) and others, have suggested a distinction in aggression based on two primary subtypes: reactive and proactive aggression. The form, severity and persistence of these aggressive subtypes may depend on an on-going interaction between individual characteristics and environmental characteristics that elicit varying antecedents and consequences (Frick,...

  4. Behavioural strategies of aggressive and non-aggressive male mice in active shock avoidance

    OpenAIRE

    Benus, R. F.; Bohus, B; Koolhaas, J.M.; van Oortmerssen, G.A

    1989-01-01

    The hypothesis, partly based on findings in social interactions, that aggressive mice generally adopt an active behavioural strategy (cf. fight-flight) in threatening situations, while non-aggressive ones generally assume a passive strategy (cf. conservation-withdrawal) was tested using a two-way active shock avoidance paradigm. Overall, aggressive mice were found to be better active shock avoiders than non-aggressive animals, a finding that is consistent with our hypothesis. However, within ...

  5. The Influence of Classroom Aggression and Classroom Climate on Aggressive-Disruptive Behavior

    OpenAIRE

    Thomas, Duane E.; Bierman, Karen L.; Powers, CJ

    2011-01-01

    Research suggests that early classroom experiences influence the socialization of aggression. Tracking changes in the aggressive behavior of 4179 children from kindergarten to second-grade (ages 5–8) this study examined the impact of two important features of the classroom context–aggregate peer aggression and climates characterized by supportive teacher-student interactions. The aggregate aggression scores of children assigned to first-grade classrooms predicted the level of classroom aggres...

  6. Adolescent Aggression: The Role of Peer Group Status Motives, Peer Aggression, and Group Characteristics

    OpenAIRE

    Faris, Robert; Ennett, Susan

    2012-01-01

    Recent studies of youth aggression have emphasized the role of network-based peer influence processes. Other scholars have suggested that aggression is often motivated by status concerns. We integrate these two veins of research by considering the effects of peer status motivations on subsequent adolescent aggression, net of their own status motivations, prior aggression, and peer behavior. We also explore different levels at which peer effects may occur, considering the effects of reciprocat...

  7. Survey of Anomaly Detection Methods

    Energy Technology Data Exchange (ETDEWEB)

    Ng, B

    2006-10-12

    This survey defines the problem of anomaly detection and provides an overview of existing methods. The methods are categorized into two general classes: generative and discriminative. A generative approach involves building a model that represents the joint distribution of the input features and the output labels of system behavior (e.g., normal or anomalous) then applies the model to formulate a decision rule for detecting anomalies. On the other hand, a discriminative approach aims directly to find the decision rule, with the smallest error rate, that distinguishes between normal and anomalous behavior. For each approach, we will give an overview of popular techniques and provide references to state-of-the-art applications.

  8. Aggressive Angiomyxoma of the Vulva: A Bizarre Perineal Lesion

    Directory of Open Access Journals (Sweden)

    Adamantia Zizi-Sermpetzoglou

    2015-01-01

    Full Text Available Introduction. Aggressive angiomyxoma is a rare, slowly growing, and benign tumour of mesenchymal origin, which affects women of reproductive age and is associated with a high risk of local recurrence. Case Presentation. A case of a 47-year-old white female is presented herein, with a large polypoid, gelatinous mass on the right labia majora, measuring 26 × 21 × 6 cm. Histopathologically, the lesion was composed of spindle and stellate-shaped cells embedded in a myxoid matrix. Another specific feature was the presence of variable-sized thin-walled capillaries and thick-walled vascular channels. The patient underwent wide local excision of the tumour with clear margins and developed local recurrence 18 months later. Discussion. Aggressive angiomyxoma of the vulva needs to be distinguished from benign myxoid tumors with a low risk of local recurrence as well as from malignant myxoid neoplasms. Usually wide local excision with tumour-free margins and occasionally hormonal manipulation is the treatment of choice.

  9. Calculation of the commutator anomaly

    International Nuclear Information System (INIS)

    It is well-known that, for the non-Abelian gauge theory coupled to the chiral fermions, which is described by a Lagrangian, the anomaly of the non-Abelian current is given by the descent form of the Chern-Simon five form; D*Ja = (-1/24π2)tr[d(AdA + 1/2A3)], where A = Aμdxμ = -itaAμadxμ. Recently, Faddeev argued that, for such an anomalous system, the gauge symmetry would be represented in a generalized sense of projective representation; V(g1)V(g2)Ψ(A) = exp[iα2(g1, g2; A)] X V(g1g2)Ψ(A), where Ψ(A) is the wave functional and the phase factor α2 depends on both the group elements and the gauge field configuration A. Here, it is convenient to consider the infinitesimal version of the above argument. The generator of infinitesimal gauge transformation in the temporal gauge A0 = 0 is given by Ga(x) = δiEia + gfabcAibEic - gΨ-barγ0taΨ, and the infinitesimal form of the previous product rule can be written as the equal time commutation relation; [Ga(x), Gb(y)] = ifabcGc(x)δ3(x-y) + ab(x,y,A), where is related to α2. In this equation, the first term is what is expected as the normal commutation relation of the generator, while the second term is an anomaly, which is designated here as the commutator anomaly. Then the present study concentrates on operations to determine the anomaly term. (Nogami, A.)

  10. Quantum tunneling and trace anomaly

    International Nuclear Information System (INIS)

    We compute the corrections, using the tunneling formalism based on a quantum WKB approach, to the Hawking temperature and Bekenstein-Hawking entropy for the Schwarzschild black hole. The results are related to the trace anomaly and are shown to be equivalent to findings inferred from Hawking's original calculation based on path integrals using zeta function regularization. Finally, exploiting the corrected temperature and periodicity arguments we also find the modification to the original Schwarzschild metric which captures the effect of quantum corrections.

  11. KIDNEY ANOMALIES: HORSE SHOE KIDNEY

    OpenAIRE

    Hemalatha; Komarabattina; Nageshwar Rao; Kotikala Prabhakara

    2015-01-01

    INTRODUCTION : Horse Shoe Kidney was first recognized during an autopsy by De Carpi in 1521. This anomaly consists of two distinct renal masses lying vertically on either side of the midline and connected at their respective lower poles by a parenchymatous or fibrous isthmus that crosses the mid pl ane of the body. This isthmus lies at the level of 4th lumbar vertebra just beneath the origin of inferior mesenteric ...

  12. Prenatal diagnosis of cloacal anomaly.

    Science.gov (United States)

    Cacciaguerra, S; Lo Presti, L; Di Leo, L; Grasso, S; Gangarossa, S; Di Benedetto, V; Di Benedetto, A

    1998-02-01

    The authors present a case of prenatal diagnosis of cloacal anomaly, characterized by the presence of oligohydramnios and cystic pelvic mass with changing features during observation. Postnatal study confirmed the presence of a recto-cloacal fistula, with a high confluence of the urinary, genital and intestinal systems. Both parents had a chromosome 9 inversion (p11q13), but the child was chromosomally normal. PMID:9561584

  13. Schottky Anomaly and Hadronic Spectrum

    CERN Document Server

    Biswas, Aritra; Sinha, Nita

    2015-01-01

    We show that the hadronic "heat capacity" calculated as a function of temperature may be used to infer the possible presence of different scales underlying the dynamical structure of hadronic resonances using the phenomenon of Schottky anomaly. We first demonstrate this possibility with well known meson spectrum in various channels and comment on the possibility of using this method as a diagnostic to distinguish the exotic states.

  14. Behavioural strategies of aggressive and non-aggressive male mice in response to inescapable shock

    NARCIS (Netherlands)

    Benus, R.F.; Bohus, B.; Koolhaas, J.M.; Oortmerssen, G.A. van

    1990-01-01

    The effect of exposure to inescapable long-duration shocks of moderate intensity on intershock activity and on subsequent escape or avoidance performance was studied in aggressive and non-aggressive male mice. The activity of the non-aggressive mice was severely suppressed during the inescapable sho

  15. The Relationship of Aggression and Bullying to Social Preference: Differences in Gender and Types of Aggression

    Science.gov (United States)

    Lee, Eunju

    2009-01-01

    With 338 fifth-grade students as subjects, this study found the variations in the relation between school bullying and social preference as a function of gender and types of aggressive behavior utilized. Aggressive boys were likely to be rejected by peers, whereas aggressive girls were both rejected and accepted by peers. Children nominated…

  16. Predicting Aggressive Behavior in Children with the Help of Measures of Implicit and Explicit Aggression

    Science.gov (United States)

    Grumm, Mandy; Hein, Sascha; Fingerle, Michael

    2011-01-01

    Aggressive behavior between children in schools is a topic that receives much interest as violence and aggressive behavior cause many maladaptive social outcomes in the school setting. In the current study the Implicit Association Test (IAT) was adapted as a measure of children's implicit aggression, by assessing the association of the self…

  17. Media depictions of physical and relational aggression: connections with aggression in young adults' romantic relationships.

    Science.gov (United States)

    Coyne, Sarah M; Nelson, David A; Graham-Kevan, Nicola; Tew, Emily; Meng, K Nathan; Olsen, Joseph A

    2011-01-01

    Various studies have found that viewing physical or relational aggression in the media can impact subsequent engagement in aggressive behavior. However, this has rarely been examined in the context of relationships. Accordingly, the aim of this study was to examine the connection between viewing various types of aggression in the media and perpetration of aggression against a romantic partner. A total of 369 young adults completed a variety of questionnaires asking for their perpetration of various forms of relationship aggression. Participants' exposure to both physical and relational aggression in the media was also assessed. As a whole, we found a relationship between viewing aggression in the media and perpetration of aggression; however, this depended on the sex of the participant and the type of aggression measured. Specifically, exposure to physical violence in the media was related to engagement in physical aggression against their partner only for men. However, exposure to relational aggression in the media was related to romantic relational aggression for both men and women. PMID:21046605

  18. Competitive Aggression without Interaction: Effects of Competitive versus Cooperative Instructions on Aggressive Behavior in Video Games.

    Science.gov (United States)

    Anderson, Craig A.; Morrow, Melissa

    1995-01-01

    Extended and tested Deutsch's theory of competition effects. Predicted that people view competitive situations as inherently more aggressive than cooperative ones. Predicted that leading people to think of an aggressive situation in competitive terms would increase aggressive behavior. Increase of kill ratio occurred in absence of changes in…

  19. Relational and Overt Aggression in Urban India: Associations with Peer Relations and Best Friends' Aggression

    Science.gov (United States)

    Bowker, Julie C.; Ostrov, Jamie M.; Raja, Radhi

    2012-01-01

    This study explored the associations between relational and overt aggression and social status, and tested whether the peer correlates of aggression vary as a function of best friends' aggression during early adolescence in urban India. One hundred and ninety-four young adolescents from primarily middle-to-upper-class families in Surat, India…

  20. Stability of Aggression during Early Adolescence as Moderated by Reciprocated Friendship Status and Friend's Aggression

    Science.gov (United States)

    Adams, Ryan E.; Bukowski, William M.; Bagwell, Catherine

    2005-01-01

    The effect of friendship reciprocation and friend aggression on the stability of aggression across a 6-month period following the transition to secondary school was studied in a sample of 298 Grade 6 children from a predominately white, middle-class, Midwestern American community. The stability of aggression was generally high but it varied as a…

  1. Subjective aggression during alcohol and cannabis intoxication before and after aggression exposure

    NARCIS (Netherlands)

    De Sousa Fernandes Perna, E B; Theunissen, E L; Kuypers, K P C; Toennes, S W; Ramaekers, J G

    2016-01-01

    RATIONALE: Alcohol and cannabis use have been implicated in aggression. Alcohol consumption is known to facilitate aggression, whereas a causal link between cannabis and aggression has not been clearly demonstrated. OBJECTIVES: This study investigated the acute effects of alcohol and cannabis on sub

  2. Anomaly mediation in superstring theory

    Energy Technology Data Exchange (ETDEWEB)

    Conlon, Joseph P. [Rudolf Peierls Center for Theoretical Physics, Oxford (United Kingdom); Balliol College, Oxford (United Kingdom); Goodsell, Mark [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Palti, Eran [Centre de Physique Theoretique, Ecole Polytechnique, CNRS, Palaiseau (France)

    2010-08-15

    We study anomaly mediated supersymmetry breaking in type IIB string theory and use our results to test the supergravity formula for anomaly mediated gaugino masses. We compute 1-loop gaugino masses for models of D3-branes on orbifold singularities with 3-form fluxes by calculating the annulus correlator of 3-form flux and two gauginos in the zero momentum limit. Consistent with supergravity expectations we find both anomalous and running contributions to 1-loop gaugino masses. For background Neveu-Schwarz H-flux we find an exact match with the supergravity formula. For Ramond-Ramond flux there is an off-shell ambiguity that precludes a full matching. The anomaly mediated gaugino masses, while determined by the infrared spectrum, arise from an explicit sum over UV open string winding modes. We also calculate brane-to-brane tree-level gravity mediated gaugino masses and show that there are two contributions coming from the dilaton and from the twisted modes, which are suppressed by the full T{sup 6} volume and the untwisted T{sup 2} volume respectively. (orig.)

  3. Anomaly mediation in superstring theory

    International Nuclear Information System (INIS)

    We study anomaly mediated supersymmetry breaking in type IIB string theory and use our results to test the supergravity formula for anomaly mediated gaugino masses. We compute 1-loop gaugino masses for models of D3-branes on orbifold singularities with 3-form fluxes by calculating the annulus correlator of 3-form flux and two gauginos in the zero momentum limit. Consistent with supergravity expectations we find both anomalous and running contributions to 1-loop gaugino masses. For background Neveu-Schwarz H-flux we find an exact match with the supergravity formula. For Ramond-Ramond flux there is an off-shell ambiguity that precludes a full matching. The anomaly mediated gaugino masses, while determined by the infrared spectrum, arise from an explicit sum over UV open string winding modes. We also calculate brane-to-brane tree-level gravity mediated gaugino masses and show that there are two contributions coming from the dilaton and from the twisted modes, which are suppressed by the full T6 volume and the untwisted T2 volume respectively. (orig.)

  4. Plant vascular development

    NARCIS (Netherlands)

    Rybel, De Bert; Mähönen, Ari Pekka; Helariutta, Yrjö; Weijers, Dolf

    2016-01-01

    Vascular tissues in plants are crucial to provide physical support and to transport water, sugars and hormones and other small signalling molecules throughout the plant. Recent genetic and molecular studies have identified interconnections among some of the major signalling networks that regulate

  5. Hypoglycemia and aggression: a review.

    Science.gov (United States)

    Benton, D

    1988-08-01

    The popular notion that a tendency to develop low levels of blood glucose is the cause of a range of behavioral problems is reviewed. It is concluded that it is inappropriate to use the glucose tolerance test as a test of the tendency to develop reactive hypoglycemia. Instead, a meal tolerance test, in which glucose is administered in the presence of fat and protein, should be the method of choice. The use of a meal tolerance test strongly suggests that reactive hypoglycemia rarely results, except in a few exceptional individuals. Three situations are described in which a correlation between a tendency to develop moderately low levels of blood glucose during a glucose tolerance test (not hypoglycemic values) and the tendency to act aggressively have been reported. The significance of these data is unclear but several possible mechanisms by which glucose may influence behavior are discussed. PMID:3053477

  6. Vascular permeability in cerebral cavernous malformations

    DEFF Research Database (Denmark)

    Mikati, Abdul G; Khanna, Omaditya; Zhang, Lingjiao;

    2015-01-01

    Patients with the familial form of cerebral cavernous malformations (CCMs) are haploinsufficient for the CCM1, CCM2, or CCM3 gene. Loss of corresponding CCM proteins increases RhoA kinase-mediated endothelial permeability in vitro, and in mouse brains in vivo. A prospective case-controlled observ......Patients with the familial form of cerebral cavernous malformations (CCMs) are haploinsufficient for the CCM1, CCM2, or CCM3 gene. Loss of corresponding CCM proteins increases RhoA kinase-mediated endothelial permeability in vitro, and in mouse brains in vivo. A prospective case......-controlled observational study investigated whether the brains of human subjects with familial CCM show vascular hyperpermeability by dynamic contrast-enhanced quantitative perfusion magnetic resonance imaging, in comparison with CCM cases without familial disease, and whether lesional or brain vascular permeability...... correlates with CCM disease activity. Permeability in white matter far (WMF) from lesions was significantly greater in familial than in sporadic cases, but was similar in CCM lesions. Permeability in WMF increased with age in sporadic patients, but not in familial cases. Patients with more aggressive...

  7. MRI diagnosis of aggressive fibromatosis

    International Nuclear Information System (INIS)

    Objective: To analyze the MRI features of aggressive fibromatosis (AF) in order to improve its diagnostic accuracy. Method: The clinical files and MRI appearances of 66 AF patients (primary 19 cases, recurrent 47 cases) were reviewed and compared with the postoperative pathological findings. Results: The median age of all patients was 31 years (-range, 11-60 years) with a male-to-female sex ratio of 1 : 3.4. Eighty tumors were discovered. There were 5 superficial fibromatosis and 75 deep fibromatosis in which 2 lesions were intraabdominal, 6 lesions in the abdominal wall and 67 lesions extraabdominal. The average long diameter of all lesions was (8.7±5.4) cm, of superficial lesions (5.7± 2.8)cm, of deep lesions (8.9±5.5) cm. Of the 80 tumors, 79 were displayed as space-occupying intramuscular lesions, 47 (58.8%) were ovoid or lobulated and 22 (27.5%) were infiltrative in shape; 48 (60%) lesions had a well-defined margin, of which 4 formed a pseudocapsule as they enlarged by compressing normal tissue. To compare with the muscle signal intensity on MRI, 75 lesions demonstrated isointensity, mild hyperintensity or hypointensity on T1WI , heterogeneous high intensity on T2WI, and avid heterogeneous enhancement after contrast administration. There was no necrosis or surrounding edema in all lesions. Tumors destroyed bone in 2, cases. Conclusion: Aggressive fibromatosis has characteristic features on MRI, and MRI is valuable in diagnosing AF and evaluating the extend of lesion and involvement of adjacent structures. (authors)

  8. Individualizing management of aggressive fibromatoses

    International Nuclear Information System (INIS)

    Purpose: To examine prognostic indicators in aggressive fibromatoses that may be used to optimize case-specific management strategy. Methods and Materials: One hundred and seven fibromatoses presenting between 1971 and 1992 were analyzed. The following treatment modalities were utilized: (a) surgery alone for 51 tumors; (b) radiation alone for 15 tumors; and (c) radiation and surgery (combined modality) for 41 tumors. Outcome analysis was based on 5-year actuarial local control rates. Results: Control rates among surgery, radiation therapy, and combined modality groups were 69%, 93%, and 72%. Multivariate analysis identified age 60 Gy was seen in patients with unresected or gross residual disease. Of the patients, 23 with disease involving the plantar region had a control rate of 62%, with significantly worse outcomes in children. Conclusions: These results are consistent with those found in the relevent literature. They support primary resection with negative margins when feasible. Radiation is a highly effective alternative in situations where surgery would result in major functional or cosmetic defects. When negative surgical margins are not achieved in recurrent tumors, radiation is recommended. Perioperative radiation should be considered in other high-risk groups (recurrent disease, positive margins, and plantar tumors in young patients). Doses of 60-65 Gy for gross disease and 50-60 Gy for microscopic residual are recommended. Observation may be considered for primary tumors with disease remaining in situ when they are located such that progression would not cause significant morbidity. Although plantar lesions in children may represent a group at high risk for recurrence or aggressive behavior, the greater potential for radiation-induced morbidity in this group must also temper its use. Given the inconsistent nature and treatment response of this tumor, it is fundamental that treatment recommendations should be made based on the risk:benefit analysis for

  9. Renal posttransplant's vascular complications

    Directory of Open Access Journals (Sweden)

    Bašić Dragoslav

    2003-01-01

    Full Text Available INTRODUCTION Despite high graft and recipient survival figures worldwide today, a variety of technical complications can threaten the transplant in the postoperative period. Vascular complications are commonly related to technical problems in establishing vascular continuity or to damage that occurs during donor nephrectomy or preservation [13]. AIM The aim of the presenting study is to evaluate counts and rates of vascular complications after renal transplantation and to compare the outcome by donor type. MATERIAL AND METHODS A total of 463 kidneys (319 from living related donor LD and 144 from cadaveric donor - CD were transplanted during the period between June 1975 and December 1998 at the Urology & Nephrology Institute of Clinical Centre of Serbia in Belgrade. Average recipients' age was 33.7 years (15-54 in LD group and 39.8 (19-62 in CD group. Retrospectively, we analyzed medical records of all recipients. Statistical analysis is estimated using Hi-squared test and Fischer's test of exact probability. RESULTS Major vascular complications including vascular anastomosis thrombosis, internal iliac artery stenosis, internal iliac artery rupture obliterant vasculitis and external iliac vein rupture were analyzed. In 25 recipients (5.4% some of major vascular complications were detected. Among these cases, 22 of them were from CD group vs. three from LD group. Relative rate of these complications was higher in CD group vs. LD group (p<0.0001. Among these complications dominant one was vascular anastomosis thrombosis which occurred in 18 recipients (17 from CD vs. one from LD. Of these recipients 16 from CD lost the graft, while the rest of two (one from each group had lethal outcome. DISCUSSION Thrombosis of renal allograft vascular anastomosis site is the most severe complication following renal transplantation. In the literature, renal allograft thrombosis is reported with different incidence rates, from 0.5-4% [14, 15, 16]. Data from the

  10. An ECG T-wave Anomalies Detection Using a Lightweight Classification Model for Wireless Body Sensors

    OpenAIRE

    Hadjem, Medina; Naït-Abdesselam, Farid

    2015-01-01

    International audience Various wearable devices are foreseen to be the key components in the future for vital signs monitoring as they offer a non-invasive, remote and real-time medical monitoring means. Among those, Wireless Body Sensors (WBS) for cardiac monitoring are of prominent help to early detect cardioVascular Diseases (CVD) by analyzing 24/24 and 7/7 collected cardiac data. Today, most of these WBS systems for CVD detection, includeonly limited automatic anomalies detection, part...

  11. Multiple arterial anomalies in the newborn infant. Echocardiographic and angiographic diagnosis

    Directory of Open Access Journals (Sweden)

    Ivan Romero Rivera

    2000-08-01

    Full Text Available Multiple arterial anomalies characterized by tortuosity and rolling of the pulmonary arteries and aorta were diagnosed on echocardiography in an asymptomatic newborn infant with a phenotype suggesting Ehlers-Danlos syndrome. These changes were later confirmed on angiography, which also showed peripheral vascular abnormalities. The electrocardiogram showed a probable hemiblock of the left anterosuperior branch, and the chest x-ray showed an excavated pulmonary trunk with normal pulmonary flow.

  12. Desensitization to media violence: links with habitual media violence exposure, aggressive cognitions, and aggressive behavior.

    Science.gov (United States)

    Krahé, Barbara; Möller, Ingrid; Huesmann, L Rowell; Kirwil, Lucyna; Felber, Juliane; Berger, Anja

    2011-04-01

    This study examined the links between desensitization to violent media stimuli and habitual media violence exposure as a predictor and aggressive cognitions and behavior as outcome variables. Two weeks after completing measures of habitual media violence exposure, trait aggression, trait arousability, and normative beliefs about aggression, undergraduates (N = 303) saw a violent film clip and a sad or a funny comparison clip. Skin conductance level (SCL) was measured continuously, and ratings of anxious and pleasant arousal were obtained after each clip. Following the clips, participants completed a lexical decision task to measure accessibility of aggressive cognitions and a competitive reaction time task to measure aggressive behavior. Habitual media violence exposure correlated negatively with SCL during violent clips and positively with pleasant arousal, response times for aggressive words, and trait aggression, but it was unrelated to anxious arousal and aggressive responding during the reaction time task. In path analyses controlling for trait aggression, normative beliefs, and trait arousability, habitual media violence exposure predicted faster accessibility of aggressive cognitions, partly mediated by higher pleasant arousal. Unprovoked aggression during the reaction time task was predicted by lower anxious arousal. Neither habitual media violence usage nor anxious or pleasant arousal predicted provoked aggression during the laboratory task, and SCL was unrelated to aggressive cognitions and behavior. No relations were found between habitual media violence viewing and arousal in response to the sad and funny film clips, and arousal in response to the sad and funny clips did not predict aggressive cognitions or aggressive behavior on the laboratory task. This suggests that the observed desensitization effects are specific to violent content. PMID:21186935

  13. Aggressive and foraging behavioral interactions among ruffe

    Science.gov (United States)

    Savino, Jacqueline F.; Kostich, Melissa J.

    2000-01-01

    The ruffe, Gymnocephalus cernuus, is a nonindigenous percid in the Great Lakes. Ruffe are aggressive benthivores and forage over soft substrates. Laboratory studies in pools (100 cm in diameter, 15 cm water depth) were conducted to determine whether fish density (low = 2, medium = 4, high = 6 ruffe per pool) changed foraging and aggressive behaviors with a limited food supply of chironomid larvae. All fish densities demonstrated a hierarchy based on aggressive interactions, but ruffe were most aggressive at low and high fish densities. Time spent in foraging was lowest at the low fish density. The best forager at the low fish density was the most aggressive individual, but the second most aggressive fish at the medium and high fish density was the best forager and also the one chased most frequently. A medium fish density offered the best energetic benefits to ruffe by providing the lowest ratio of time spent in aggression to that spent foraging. Based on our results, ruffe should grow best at an intermediate density. With high ruffe densities, we would also expect disparity in size as the more aggressive fish are able to garner a disproportionate amount of the resources. Alternatively, as the Great Lakes are a fairly open system, ruffe could migrate out of one area to colonize another as populations exceed optimal densities.

  14. The Barrier within: Relational Aggression among Women

    Science.gov (United States)

    Brock, Barbara L.

    2010-01-01

    Relational aggression among women presents an overlooked barrier to women's quest for advancement in the workplace. Although research on women's leadership extols their ability to collaborate and form lasting, supportive relationships, one cannot assume that all women are supportive of other women. Research reveals that relational aggression,…

  15. Treatment of Aggressive NK-Cell Leukemia

    DEFF Research Database (Denmark)

    Boysen, Anders Kindberg; Jensen, Paw; Johansen, Preben;

    2011-01-01

    Aggressive NK-cell leukemia is a rare malignancy with neoplastic proliferation of natural killer cells. It often presents with constitutional symptoms, a rapid declining clinical course, and a poor prognosis with a median survival of a few months. The disease is usually resistant to cytotoxic...... literature concerning treatment of aggressive NK-cell leukemia....

  16. Students' Attitude to Aggression in School.

    Science.gov (United States)

    Dettenborn, Harry; Lautsch, Erwin

    1994-01-01

    Reports on a study of 2,553 students' attitudes toward aggression in schools. Finds differentiated results based on demographic data and with the students' personal involvement in the aggressive acts as either the perpetrator or victim. Discusses practical consequences of the study for schools. (CFR)

  17. Involvement in Internet Aggression during Early Adolescence

    Science.gov (United States)

    Werner, Nicole E.; Bumpus, Matthew F.; Rock, Daquarii

    2010-01-01

    The current study examined concurrent and longitudinal predictors of early adolescents' involvement in Internet aggression. Cross-sectional results (N = 330; 57% female) showed that the likelihood of reporting Internet aggression was higher among youth who spent more time using Internet-based technologies to communicate with friends and who were…

  18. Relational Aggression and Victimization in College Students

    Science.gov (United States)

    Dahlen, Eric R.; Czar, Katherine A.; Prather, Emily; Dyess, Christy

    2013-01-01

    For this study we explored relational aggression and victimization in a college sample (N = 307), examining potential gender and race differences, correlates, and the link between relational aggression and common emotional and behavioral problems, independent of relational victimization. Gender and race differences were observed on relational…

  19. MAGNETIC ANOMALY LINEATION AND FRACTURE ZONE IN ENDERBY BASIN DEDUCED FROM GEOMAGNETIC ANOMALY FIELD VECTOR

    OpenAIRE

    ノギ, ヨシフミ; セアマ, ノブカズ; イセザキ, ノブヒロ; フクダ, ヨウイチ; Yoshifumi, NOGI; Nobukazu, SEAMA; Nobuhiro, ISEZAKI; Yoichi, FUKUDA

    1995-01-01

    The formation of magnetic anomaly lineations and fracture zones in Enderby Basin (10°E-80°E), Southern Indian Ocean, are vital to understanding process of the Gondwana breakup. Vector anomalies of the geomagnetic field were obtained during the 30th, 31st, 32nd, and 33rd Japanese Antarctic Research Expeditions. The strikes of the magnetic anomaly lineations and fracture zones were deduced from vector geomagnetic anomaly field data as well as seasurface and satellite gravity anomalies. We surmi...

  20. Vascular manifestations of Behcet's disease

    Directory of Open Access Journals (Sweden)

    Regina Georgiyeva Goloeva

    2010-04-01

    Conclusion. Vascular disorders in BD were diagnosed in one fourth of the patients, mainly in young male patients. Severe thromboses with the development of chronic venous insignificance, Budd-Chiari syndrome, pulmonary and iliac artery aneurysms, and arterial thromboses were observed in male patients only. Vascular events were associated with erythema nodosum and epididymitis; in these concomitances, the vascular risk was substantially increased. Vascular death rates were 2,2%.

  1. Order aggressiveness and order book dynamics

    DEFF Research Database (Denmark)

    Hall, Anthony D.; Hautsch, Nikolaus

    2006-01-01

    In this paper, we study the determinants of order aggressiveness and traders’ order submission strategy in an open limit order book market. Applying an order classification scheme, we model the most aggressive market orders, limit orders as well as cancellations on both sides of the market employ...... explaining the determinants of order aggressiveness. Overall, our empirical results broadly confirm theoretical predictions on limit order book trading. However, we also find evidence for behavior that can be attributed to particular liquidity and volatility effects......In this paper, we study the determinants of order aggressiveness and traders’ order submission strategy in an open limit order book market. Applying an order classification scheme, we model the most aggressive market orders, limit orders as well as cancellations on both sides of the market...

  2. Protection of nuclear facilities against outer aggressions

    International Nuclear Information System (INIS)

    The various types of outer aggressions envisaged in safety analysis for nuclear facilities are reviewed. These outer aggressions are classified as natural and non-natural phenomena, the latter depending on the human activities in the vicinity of nuclear sites. The principal natural phenomena able to constitute aggressions are atmospheric phenomena (strong winds, snow storms, hail, frosting mists), hydrologie phenomena such as tides, surges, flood, low waters, and geologic phenomena such as earthquakes. Artificial phenomena are concerned with aircraft crashes, projectiles, fire, possible ruptures of dams, and intentional human aggressions. The protection against intentional human aggressions is of two sorts: first, the possibility of access to the installations mostly sensitive to sabotage are to be prevented or reduced, secondly redundant circuits and functions must be separated for preventing their simultaneous destruction in the case when sabotage actors have reach the core of the facility

  3. Insight, psychosis and aggressive behaviour in mania

    Directory of Open Access Journals (Sweden)

    Itxaso González-Ortega

    2010-06-01

    Full Text Available Background and Objectives: Aggressiveness is a common component of manic symptoms. The aim of this study was to determine the clinical characteristics associated with aggressive behaviour in bipolar patients with acute manic episodes. Methods: A study was carried out with 173 patients who met the DSM-IV criteria for manic or mixed bipolar disorder. Clinical and demographic variables were evaluated using the Positive and Negative Symptoms Scale (PANSS, the Young Mania Rating Scale (YMRS, the Brief Psychiatric Rating Scale (BPRS, and the Hamilton Depression Rating Scale (HDRS. Significance and independence of relevant variables were tested with regression models. Results: Forty percent of patients displayed aggressive behaviour. Involuntary nature of admission, positive psychotic symptoms and lack of insight were predictors of aggressive behaviour in manic patients. Conclusions: Aggressive behaviour during acute manic episodes appears to be related with the severity of the psychopathology, and particularly positive psychotic symptoms, involuntary admissions and lack of insight.

  4. Cerebral venous anomalies: Clinical significance of so-called venous angioma

    International Nuclear Information System (INIS)

    In contrast to angiography, MRI not only allows the diagnosis of DVA (developmental venous anomaly, so-called venous angioma), but also shows up cavernomas and other angiographically occult vascular malformations. It also differentiates between DVAs and occult true malformations. This has completely changed the pathological assessment of DVAs. In a retrospective study on 31 patients with angiographically proven DVAs neighbouring cavernoma was a frequent finding (15 patients, 48% group I). Symptoms caused by cavernoma were present in 6 (40%) of these 15 patients. The following associations were also found: Cerebral arterial aneurysm (2), spinal arterio-venous dural fistula (1), dermal haemangioma (1), Klippel-Trenauny syndrome (1). Only 16 (52%) of the 31 cases with DVA were free of associated cavernoma (group II). Only 3 (19%) of these patients with a solitary DVA were symptomatic. In our series we have seen no case of bleeding from a DVA. A DVA is a vascular anomaly characterized, like other anomalies, by reduced resistance and limited capacity for regulation and adaptation. In rare cases this can result in haemodynamic disturbances, thrombosis and ischaemia. Wall rupture with bleeding does not occur in DVA. It must be assumed that bleeding reported in patients with DVAs before the availability of MRI resulted from an associated true vascular malformation in most cases. (orig.)

  5. Psychometric Properties of the Situation and Aggressive Behavior Inventory and the Motives for Aggression Inventory

    Directory of Open Access Journals (Sweden)

    Maribel Montejo Hernández

    2008-05-01

    Full Text Available Psychometric properties of the Situation and Aggressive Behavior Inventory and the Motives for Aggression Inventory were examined in a sample of 373 students of Medicine and Psychology in the city of Tunja in Colombia. In the Situation and Aggressive Behavior Inventory, most common aggressive behaviors were verbal aggression and attitudes or rage gestures, with physical aggression, verbal aggression and threatening showing the highest correlations; most common situation were study problems, family and interpersonalrelations, and familiar or personal economy, no high correlationswere found among situations or situations with behaviors. In the Motives for Aggression Inventory, most common motives were rage, emotional discomfort, self-defense and defending values. A ronbach´s Alpha of 0.91 was obtained. Both of the questionnaires showed a single dimension (construct validity and satisfactory divergent validity, with the Psychopathy subscale of the Clinical Analysis Questionnaire by Krug (1987, and convergent validity, with the Aggression Questionnaire by Buss and Perry (1992. Homogeneity coefficients were appropriated. Motives in the IMA, specially the pleasure of being aggressive, getting what you want, somethingmakes you feel bad, and valuing aggressive persons, were predictors of the behaviors in the ISCA.

  6. Not all aggressions are created equal: a multifoci approach to workplace aggression.

    Science.gov (United States)

    Chang, Chu-Hsiang Daisy; Lyons, Brent J

    2012-01-01

    Types of perpetrators of workplace aggression can vary considerably, and recent research has demonstrated that aggression from different perpetrator categories has different implications for victims. We extended research on multifoci aggression and explored affective and cognitive pathways linking verbal aggression from four perpetrator types--supervisors, coworkers, customers, and significant others--and employee morale and turnover intention. Data from a sample of 446 working adults indicated that both emotional strain and employees' corresponding judgments of their social exchange relationships with these perpetrators served as the mechanisms for the association between aggression from supervisors, coworkers, and customers and morale and turnover intention. Coworker aggression had a direct association with turnover intention and significant other aggression was related to turnover intention only through emotional strain. The theoretical and practical implications of these findings are discussed. PMID:22122549

  7. The relationships among perceived peer acceptance of sexual aggression, punishment certainty, and sexually aggressive behavior.

    Science.gov (United States)

    Strang, Emily; Peterson, Zoë D

    2013-12-01

    Researching the correlates of men's sexually aggressive behavior (i.e., verbal coercion and rape) is critical to both understanding and preventing sexual aggression. This study examined 120 men who completed an anonymous online questionnaire. The study aimed to determine the relative importance of two potential correlates of men's self-reported use of sexual aggression: (a) perceptions that male peers use and support sexual aggression and (b) perceptions of punishment likelihood associated with sexual aggression. Results revealed that perceptions of male friends' acceptance of sexual aggression were strongly associated with individual men's reports of using verbal coercion and rape. Perceptions of punishment likelihood were negatively correlated with verbal coercion but not with rape through intoxication and force. Implications for sexual aggression prevention are discussed. PMID:24014542

  8. Aggression on inpatient units: Clinical characteristics and consequences.

    Science.gov (United States)

    Renwick, Laoise; Stewart, Duncan; Richardson, Michelle; Lavelle, Mary; James, Karen; Hardy, Claire; Price, Owen; Bowers, Len

    2016-08-01

    Aggression and violence are widespread in UK Mental Health Trusts, and are accompanied by negative psychological and physiological consequences for both staff and other patients. Patients who are younger, male, and have a history of substance use and psychosis diagnoses are more likely to display aggression; however, patient factors are not solely responsible for violence, and there are complex circumstances that lead to aggression. Indeed, patient-staff interactions lead to a sizeable portion of aggression and violence on inpatient units, thus they cannot be viewed without considering other forms of conflict and containment that occur before, during, and after the aggressive incident. For this reason, we examined sequences of aggressive incidents in conjunction with other conflict and containment methods used to explore whether there were particular profiles to aggressive incidents. In the present study, 522 adult psychiatric inpatients from 84 acute wards were recruited, and there were 1422 incidents of aggression (verbal, physical against objects, and physical). Cluster analysis revealed that aggressive incident sequences could be classified into four separate groups: solo aggression, aggression-rule breaking, aggression-medication, and aggression-containment. Contrary to our expectations, we did not find physical aggression dominant in the aggression-containment cluster, and while verbal aggression occurred primarily in solo aggression, physical aggression also occurred here. This indicates that the management of aggression is variable, and although some patient factors are linked with different clusters, these do not entirely explain the variation. PMID:26892149

  9. Easily magnetic anomalies earthquake prediction

    Directory of Open Access Journals (Sweden)

    Jiang Min

    2016-01-01

    Full Text Available Low power consumption long time offset magnetic field detector (earthquake prediction .The design of the hardware circuit of the magnetic field detector seismic geomagnetic acquisition and pre processing module mainly includes. Electronic compass, compass. monitoring device while the magnetic azimuth for monitoring and analyzing the object, GSM, but it can also be applied to other seismic precursor information analysis, such as earthquake precursory infrasound abnormality, only need infrasound abnormality intelligent sensor replace geomagnetic anomaly intelligent sensor, and modify the relevant parameters can be.

  10. Hot Flow Anomalies at Venus

    Science.gov (United States)

    Collinson, G. A.; Sibeck, David Gary; Boardsen, Scott A.; Moore, Tom; Barabash, S.; Masters, A.; Shane, N.; Slavin, J.A.; Coates, A.J.; Zhang, T. L.; Sarantos, M.

    2012-01-01

    We present a multi-instrument study of a hot flow anomaly (HFA) observed by the Venus Express spacecraft in the Venusian foreshock, on 22 March 2008, incorporating both Venus Express Magnetometer and Analyzer of Space Plasmas and Energetic Atoms (ASPERA) plasma observations. Centered on an interplanetary magnetic field discontinuity with inward convective motional electric fields on both sides, with a decreased core field strength, ion observations consistent with a flow deflection, and bounded by compressive heated edges, the properties of this event are consistent with those of HFAs observed at other planets within the solar system.

  11. Chiral Anomaly in Contorted Spacetimes

    CERN Document Server

    Mielke, E W

    1999-01-01

    The Dirac equation in Riemann-Cartan spacetimes with torsion is reconsidered. As is well-known, only the axial covector torsion $A$, a one-form, couples to massive Dirac fields. Using diagrammatic techniques, we show that besides the familiar Riemannian term only the Pontrjagin type four-form $dA\\wedge dA$ does arise additionally in the chiral anomaly, but not the Nieh-Yan term $d ^* A$, as has been claimed recently. Implications for cosmic strings in Einstein-Cartan theory as well as for Ashtekar's canonical approach to quantum gravity are discussed.

  12. Plant Vascular Biology 2010

    Energy Technology Data Exchange (ETDEWEB)

    Ding, Biao

    2014-11-17

    This grant supported the Second International Conference on Plant Vascular Biology (PVB 2010) held July 24-28, 2010 on the campus of Ohio State University, Columbus, Ohio. Biao Ding (Ohio State University; OSU) and David Hannapel (Iowa State University; ISU) served as co-chairs of this conference. Biao Ding served as the local organizer. PVB is defined broadly here to include studies on the biogenesis, structure and function of transport systems in plants, under conditions of normal plant growth and development as well as of plant interactions with pathogens. The transport systems cover broadly the xylem, phloem, plasmodesmata and vascular cell membranes. The PVB concept has emerged in recent years to emphasize the integrative nature of the transport systems and approaches to investigate them.

  13. Vascular cognitive impairment

    Directory of Open Access Journals (Sweden)

    N.V. Vakhnina

    2014-05-01

    Full Text Available Vascular pathology of the brain is the second most common cause of cognitive impairment after Alzheimer's disease. The article describes the modern concepts of etiology, pathogenetic mechanisms, clinical features and approaches to diagnosis and therapy of vascular cognitive impairment (VCI. Cerebrovascular accident, chronic cerebral circulatory insufficiency and their combination, sometimes in combination with a concomitant neurodegenerative process, are shown to be the major types of brain lesions leading to VCI. The clinical presentation of VCI is characterized by the neuropsychological status dominated by impairment of the executive frontal functions (planning, control, attention in combination with focal neurological symptoms. The diagnosis is based on comparing of the revealed neuropsychological and neurological features with neuroimaging data. Neurometabolic, acetylcholinergic, glutamatergic, and other vasoactive drugs and non-pharmacological methods are widely used to treat VCI. 

  14. Pathophysiology of vascular dementia

    Directory of Open Access Journals (Sweden)

    Rizzo Claudia

    2009-11-01

    Full Text Available Abstract The concept of Vascular Dementia (VaD has been recognized for over a century, but its definition and diagnostic criteria remain unclear. Conventional definitions identify the patients too late, miss subjects with cognitive impairment short of dementia, and emphasize consequences rather than causes, the true bases for treatment and prevention. We should throw out current diagnostic categories and describe cognitive impairment clinically and according to commonly agreed instruments that document the demographic data in a standardized manner and undertake a systematic effort to identify the underlying aetiology in each case. Increased effort should be targeted towards the concept of and criteria for Vascular Cognitive Impairment and Post-Stroke Dementia as well as for genetic factors involved, especially as these categories hold promise for early prevention and treatment.

  15. Prenatal sonographic diagnosis of focal musculoskeletal anomalies

    Energy Technology Data Exchange (ETDEWEB)

    Ryu, Jung-Kyu; Cho, Jeong-Yeon; Choi, Jong-Sun [Sungkyunkwan University School of Medicine, Seoul (Korea, Republic of)

    2003-12-15

    Focal musculoskeletal anomalies vary, and can manifest as part of a syndrome or be accompanied by numerous other conditions such as genetic disorders, karyotype abnormalities, central nervous system anomalies and other skeletal anomalies, lsolated focal musculoskeletal anomaly does, however, also occur; its early prenatal diagnosis is important in deciding prenatal care, and also helps in counseling parents about the postnatal effects of numerous possible associated anomalies. We have encountered 50 cases involving focal musculoskeletal anomalies, including total limb dysplasia [radial ray abnormality (n=3), mesomelic dysplasia (n=1)]; anomalies of the hand [polydactyly (n=8), syndactyly (n=3), ectrodactyly (n=1), clinodactyly (n=6), clenched hand (n=5)]; anomalies of the foot [clubfoot (n=10), rockerbottom foot (n=5), sandal gap deformity (n=1), curly toe (n=2)]; amniotic band syndrome (n=3); and anomalies of the focal spine [block vertebra (n=1), hemivertebra (n=1)]. Among these 50 cases, five [polydactyly (n=1), syndactyly (n=2) and curly toe (n=2) were confirmed by postnatal physical evaluation, two (focal spine anomalies) were diagnosed after postnatal radiologic examination, and the remaining 43 were proven at autopsy. For each condition, we describe the prenatal sonographic findings, and include a brief review.

  16. Reactive and proactive aggression and suicide attempts among criminal offenders

    OpenAIRE

    Swogger, Marc T.; Walsh, Zach; Maisto, Stephen A.; Conner, Kenneth R.

    2013-01-01

    Outwardly-directed aggression is associated with suicide attempts, but aggression is a heterogeneous construct. Increased specificity in our understanding of the link between aggression and suicide attempts can be attained by examining subtypes of aggression. We studied the relationships of reactive and proactive aggression to history of a suicide attempt among 96 criminal offenders in a pretrial supervision program. Consistent with prior findings in non-offender samples, reactive aggression ...

  17. Verbal versus Physical Aggression in Intermittent Explosive Disorder

    OpenAIRE

    Look, Amy E.; McCloskey, Michael S.; Coccaro, Emil F.

    2014-01-01

    Intermittent Explosive Disorder (IED) is the only adult psychiatric diagnosis for which pathological aggression is primary. DSM-IV criteria focused on physical aggression, but DSM-5 allows for an IED diagnosis in the presence of frequent verbal aggression with or without concurrent physical aggression. It remains unclear how individuals with verbal aggression differ from those with physical aggression with respect to cognitive-affective deficits and psychosocial functioning. The current study...

  18. Pathophysiology of vascular dementia

    OpenAIRE

    Rizzo Claudia; Duro Giovanni; Iemolo Francesco; Castiglia Laura; Hachinski Vladimir; Caruso Calogero

    2009-01-01

    Abstract The concept of Vascular Dementia (VaD) has been recognized for over a century, but its definition and diagnostic criteria remain unclear. Conventional definitions identify the patients too late, miss subjects with cognitive impairment short of dementia, and emphasize consequences rather than causes, the true bases for treatment and prevention. We should throw out current diagnostic categories and describe cognitive impairment clinically and according to commonly agreed instruments th...

  19. Malaria and Vascular Endothelium

    International Nuclear Information System (INIS)

    Involvement of the cardiovascular system in patients with infectious and parasitic diseases can result from both intrinsic mechanisms of the disease and drug intervention. Malaria is an example, considering that the endothelial injury by Plasmodium-infected erythrocytes can cause circulatory disorders. This is a literature review aimed at discussing the relationship between malaria and endothelial impairment, especially its effects on the cardiovascular system. We discuss the implications of endothelial aggression and the interdisciplinarity that should guide the malaria patient care, whose acute infection can contribute to precipitate or aggravate a preexisting heart disease

  20. Malaria and Vascular Endothelium

    Energy Technology Data Exchange (ETDEWEB)

    Alencar, Aristóteles Comte Filho de, E-mail: aristoteles.caf@gmail.com [Universidade Federal do Amazonas, Manaus, AM (Brazil); Lacerda, Marcus Vinícius Guimarães de [Fundação de Medicina Tropical Dr. Heitor Vieira Dourado (FMT-HVD), Manaus, AM (Brazil); Okoshi, Katashi; Okoshi, Marina Politi [Faculdade de Medicina de Botucatu (Unesp), Botucatu, SP (Brazil)

    2014-08-15

    Involvement of the cardiovascular system in patients with infectious and parasitic diseases can result from both intrinsic mechanisms of the disease and drug intervention. Malaria is an example, considering that the endothelial injury by Plasmodium-infected erythrocytes can cause circulatory disorders. This is a literature review aimed at discussing the relationship between malaria and endothelial impairment, especially its effects on the cardiovascular system. We discuss the implications of endothelial aggression and the interdisciplinarity that should guide the malaria patient care, whose acute infection can contribute to precipitate or aggravate a preexisting heart disease.

  1. Affective Dependence and Aggression: An Exploratory Study

    Directory of Open Access Journals (Sweden)

    Filippo Petruccelli

    2014-01-01

    Full Text Available Introduction. Emotionally dependent subjects may engage in controlling, restrictive, and aggressive behaviours, which limit their partner’s autonomy. The underlying causes of such behaviours are not solely based on levels of aggression, but act as a mean of maintaining the subject’s own sense of self-worth, identity, and general functioning. Objective. The aim of the paper is to explore the correlation between affective dependency and reactive/proactive aggression and to evaluate individual differences as predisposing factors for aggressive behaviour and emotional dependency. Methods. The Spouse-Specific Dependency Scale (SSDS and the Reactive Proactive Questionnaire (RPQ were administered to a sample of 3375 subjects. Results. In the whole sample, a positive correlation between emotional dependency and proactive aggression was identified. Differences with regard to sex, age group, and geographical distribution were evidenced for the scores of the different scales. Conclusion. A fundamental distinction between reactive and proactive aggression was observed, anchoring proactive aggression more strictly to emotional dependency. Sociocultural and demographical variables, together with the previous structuring of attachment styles, help to determine the scope, frequency, and intensity of the demands made to the partner, as well as to feed the fears of loss, abandonment, or betrayal.

  2. Assessment of aggression in inpatient settings.

    Science.gov (United States)

    McDermott, Barbara E; Holoyda, Brian J

    2014-10-01

    The threat of violence is a major concern for all individuals working or receiving treatment in an inpatient psychiatric setting. One major focus in forensic psychology and psychiatry over the past several decades has been the development of risk assessments to aid in the identification of those individuals most at risk of exhibiting violent behavior. So-called second- and third-generation risk assessments were developed to improve the accuracy of decision making. While these instruments were developed for use in the community, many have proven to be effective in identifying patients more likely to exhibit institutional aggression. Because the purpose of risk assessment is the reduction of violence, dynamic factors were included in third-generation risk instruments to provide opportunities for intervention and methods for measuring change. Research with these instruments indicates that both static factors (second-generation) and dynamic factors (third-generation) are important in identifying those patients most likely to engage in institutional aggression, especially when the aggression is categorized by type (impulsive/reactive, organized/predatory/instrumental, psychotic). Recent research has indicated that developing a typology of aggressive incidents may provide insight both into precipitants to assaults as well as appropriate interventions to reduce such aggression. The extant literature suggests that both static and dynamic risk factors are important, but may be differentially related to the type of aggression exhibited and the characteristics of the individuals exhibiting the aggression. PMID:25296966

  3. Update on Vascular Dementia.

    Science.gov (United States)

    Khan, Ayesha; Kalaria, Raj N; Corbett, Anne; Ballard, Clive

    2016-09-01

    Vascular dementia (VaD) is a major contributor to the dementia syndrome and is described as having problems with reasoning, planning, judgment, and memory caused by impaired blood flow to the brain and damage to the blood vessels resulting from events such as stroke. There are a variety of etiologies that contribute to the development of vascular cognitive impairment and VaD, and these are often associated with other dementia-related pathologies such as Alzheimer disease. The diagnosis of VaD is difficult due to the number and types of lesions and their locations in the brain. Factors that increase the risk of vascular diseases such as stroke, high blood pressure, high cholesterol, and smoking also raise the risk of VaD. Therefore, controlling these risk factors can help lower the chances of developing VaD. This update describes the subtypes of VaD, with details of their complex presentation, associated pathological lesions, and issues with diagnosis, prevention, and treatment. PMID:27502303

  4. Vascular Cambium Development

    Science.gov (United States)

    Nieminen, Kaisa; Blomster, Tiina; Helariutta, Ykä; Mähönen, Ari Pekka

    2015-01-01

    Secondary phloem and xylem tissues are produced through the activity of vascular cambium, the cylindrical secondary meristem which arises among the primary plant tissues. Most dicotyledonous species undergo secondary development, among them Arabidopsis. Despite its small size and herbaceous nature, Arabidopsis displays prominent secondary growth in several organs, including the root, hypocotyl and shoot. Together with the vast genetic resources and molecular research methods available for it, this has made Arabidopsis a versatile and accessible model organism for studying cambial development and wood formation. In this review, we discuss and compare the development and function of the vascular cambium in the Arabidopsis root, hypocotyl, and shoot. We describe the current understanding of the molecular regulation of vascular cambium and compare it to the function of primary meristems. We conclude with a look at the future prospects of cambium research, including opportunities provided by phenotyping and modelling approaches, complemented by studies of natural variation and comparative genetic studies in perennial and woody plant species. PMID:26078728

  5. Cranio-vertebral junction anomaly: atlanto-occipital assimilation.

    Science.gov (United States)

    Pooja Jain, -; Khursheed Raza, -; Chiman Kumari, -; Manisha Hansda, -; Sb Ray, -

    2016-01-01

    Cranio-vertebral junction is a pivot which holds the globe of the head. Bony anomalies at this point are particularly significant because they lodge the spinal cord and lower part of the brain stem. Clinically fusion of the atlas with the lower part of the occiput is known as Atlanto-occipital assimilation or atlas occipitalization, which can be either partial or complete depending upon the extent of fusion. It can present as totally asymptomatic accidental finding or can be a cause behind major neuro-vascular compression. The present case study is an endeavor to explain occipitalization of atlas bone on the basis of embryology and explain its clinical relevance. PMID:27424507

  6. Testosterone and aggressive behavior in man.

    Science.gov (United States)

    Batrinos, Menelaos L

    2012-01-01

    Atavistic residues of aggressive behavior prevailing in animal life, determined by testosterone, remain attenuated in man and suppressed through familial and social inhibitions. However, it still manifests itself in various intensities and forms from; thoughts, anger, verbal aggressiveness, competition, dominance behavior, to physical violence. Testosterone plays a significant role in the arousal of these behavioral manifestations in the brain centers involved in aggression and on the development of the muscular system that enables their realization. There is evidence that testosterone levels are higher in individuals with aggressive behavior, such as prisoners who have committed violent crimes. Several field studies have also shown that testosterone levels increase during the aggressive phases of sports games. In more sensitive laboratory paradigms, it has been observed that participant's testosterone rises in the winners of; competitions, dominance trials or in confrontations with factitious opponents. Aggressive behavior arises in the brain through interplay between subcortical structures in the amygdala and the hypothalamus in which emotions are born and the prefrontal cognitive centers where emotions are perceived and controlled. The action of testosterone on the brain begins in the embryonic stage. Earlier in development at the DNA level, the number of CAG repeats in the androgen receptor gene seems to play a role in the expression of aggressive behavior. Neuroimaging techniques in adult males have shown that testosterone activates the amygdala enhancing its emotional activity and its resistance to prefrontal restraining control. This effect is opposed by the action of cortisol which facilitates prefrontal area cognitive control on impulsive tendencies aroused in the subcortical structures. The degree of impulsivity is regulated by serotonin inhibiting receptors, and with the intervention of this neurotransmitter the major agents of the neuroendocrine

  7. A study of dental anomalies

    International Nuclear Information System (INIS)

    The purpose of this study was to find out the prevalence of dental anomalies in 600 normal persons (male:363, female:237) at age 14 to 39 years, through history taking, oral examination, and radiographic observations of subjects. The obtained results were as follows: 1. The prevalence of individual dental anomalies were as follows; Congenitally missing teeth 7%; supernumerary teeth 1.33%; ectopic eruption 8.50%; transposition 0.33%; rotation 23.67%; microdontia 11.16% (peg lateral is 5.33%; third molar 5.83%); prolonged retention of deciduous teeth 1.33%; crowding 49.83%; and spacing 15.17%. 2. Alterations in numbers of teeth : The most frequently missing teeth were mandibular lateral incisors, followed by mandibular second premolars and maxillary second premolars. In numbers of congenitally missing teeth per person, 52.38% had one missing tooth and 30.95% had two missing teeth. In supernumerary teeth, there was higher rate in male than in female. Most supernumerary teeth were mesiodens of median area in maxilla and the eruption pattern of that teeth generally was unerupted state. 3. In transposition, exchange of position of teeth involved the canine and first premolar. 4. Congenital missing rate of permanent successors in prolonged retention of deciduous teeth was 69.23%. 5. Crowding and spacing had respectively higher rate in mandible and in maxilla.

  8. A study of dental anomalies

    Energy Technology Data Exchange (ETDEWEB)

    Yang, Sook; Kim, Jae Duck [Dept. of Oral Radiology, College of Dentistry, Chosun University, Kwangju (Korea, Republic of)

    1993-08-15

    The purpose of this study was to find out the prevalence of dental anomalies in 600 normal persons (male:363, female:237) at age 14 to 39 years, through history taking, oral examination, and radiographic observations of subjects. The obtained results were as follows: 1. The prevalence of individual dental anomalies were as follows; Congenitally missing teeth 7%; supernumerary teeth 1.33%; ectopic eruption 8.50%; transposition 0.33%; rotation 23.67%; microdontia 11.16% (peg lateral is 5.33%; third molar 5.83%); prolonged retention of deciduous teeth 1.33%; crowding 49.83%; and spacing 15.17%. 2. Alterations in numbers of teeth : The most frequently missing teeth were mandibular lateral incisors, followed by mandibular second premolars and maxillary second premolars. In numbers of congenitally missing teeth per person, 52.38% had one missing tooth and 30.95% had two missing teeth. In supernumerary teeth, there was higher rate in male than in female. Most supernumerary teeth were mesiodens of median area in maxilla and the eruption pattern of that teeth generally was unerupted state. 3. In transposition, exchange of position of teeth involved the canine and first premolar. 4. Congenital missing rate of permanent successors in prolonged retention of deciduous teeth was 69.23%. 5. Crowding and spacing had respectively higher rate in mandible and in maxilla.

  9. Conductivity Anomalies in Central Europe

    Science.gov (United States)

    Neska, Anne

    2016-01-01

    This paper is a review of studies which, by applying the magnetotelluric, geomagnetic deep sounding, and magnetovariational sounding methods (the latter refers to usage of the horizontal magnetic tensor), investigate Central Europe for zones of enhanced electrical conductivity. The study areas comprise the region of the Trans-European Suture Zone (i.e. the south Baltic region and Poland), the North German Basin, the German and Czech Variscides, the Pannonian Basin (Hungary), and the Polish, Slovakian, Ukrainian, and Romanian Carpathians. This part of the world is well investigated in terms of data coverage and of the density of published studies, whereas the certainty that the results lead to comprehensive interpretations varies within the reviewed literature. A comparison of spatially coincident or adjacent studies reveals the important role that the data coverage of a distinct conductivity anomaly plays for the consistency of results. The encountered conductivity anomalies are understood as linked to basin sediments, asthenospheric upwelling, large differences in lithospheric age, and—this concerns most of them, which all concentrate in the middle crust—tectonic boundaries that developed during all mountain building phases that have taken place on the continent.

  10. Adolescent Aggression: The Role of Peer Group Status Motives, Peer Aggression, and Group Characteristics.

    Science.gov (United States)

    Faris, Robert; Ennett, Susan

    2012-10-01

    Recent studies of youth aggression have emphasized the role of network-based peer influence processes. Other scholars have suggested that aggression is often motivated by status concerns. We integrate these two veins of research by considering the effects of peer status motivations on subsequent adolescent aggression, net of their own status motivations, prior aggression, and peer behavior. We also explore different levels at which peer effects may occur, considering the effects of reciprocated and unreciprocated friendships as well as larger, meso-level peer groups. We anticipate that peer group effects are magnified by both size and boundedness as measured by Freeman's (1972) Segregation Index. We find that, net of the adolescent's aggression at time 1, both the aggressive behaviors and the status valuations of friends independently increase the likelihood of aggression at time 2, six months later. The aggressive behavior of friends who do not reciprocate the adolescent's friendship nomination has particular impact. The average status valuation of peer groups increases their members' likelihood of aggression, even after controlling for their own attitudes about status, their friends' attitudes, and their friends' aggressive behavior. This effect is magnified in large groups and groups with high Freeman segregation scores. PMID:25152562

  11. Aggressive posterior retinopathy of prematurity classification

    Directory of Open Access Journals (Sweden)

    A.V. Tereshchenko,

    2013-02-01

    Full Text Available ABSTRACT Based on dynamic monitoring of 133 premature infants (266 eyes with aggressive posterior retinopathy of prematurity (ROP, digital retinoscopy and computer morphometry the disease clinical and morphometric features were revealed and systematized, and their consecutive replacement was fixed. As a result the separate classification of aggressive posterior disease was worked up. In aggressive posterior ROP course the next consecutive stages were marked out: subclinical, early clinical appearances stage, manifestation stage, advanced, far-advanced and terminal stages. The peculiarity of early clinical appearances stage and manifestation stage is the presence of such course types: favorable and unfavorable.

  12. [Aggressive behavior: theoretical and biological aspects].

    Science.gov (United States)

    Giotakos, O

    2013-01-01

    The susceptibility to aggression may manifest differently depending on the psychological context in which it occurs. In the context of psychopathy, characterized by a lack of empathy, this may manifest in aggression with criminal acts, which is characteristic of antisocial personality disorder. When the susceptibility is associated with psychotic impairment, aggression may be manifested in highly deviant behavior, like murder or serial killing. While the great majority of persons with schizophrenia do not commit violent acts, clinicians suggest that some schizophrenics may pose a risk in the community, particularly those patients with co-occurring substance abuse diagnoses, those who are noncompliant with prescribed psychiatric treatment, and those with a history of frequent relapses resulting in hospitalization or arrest. Episodic violence and aggression often accompany dementia. When coupled with emotional dysregulation, impulsive aggression often occurs in an interpersonal context, as in borderline personality disorder. However, the most common comorbidity is the substance abuse disorder, which contributes to both the cognitive distortions and disinhibition associated with the substance use. According to the biological data, aggression seems to emerge when the drive of limbic-mediated affective prefrontal response to provocative producing stimuli is insufficiently constrained by inhibition. Thus, excessive reactivity in the amygdale, coupled with inadequate prefrontal regulation, increase the possibility of aggressive behavior. The PET/SPECT studies focusing on schizophrenia have shown reduced activity in fronto-temoral circuitry. The fMRI studies concord with the hypothesis that among violent persons with schizophrenia, those with sociopathetic features and/or substance abuse constitute a highly different subgroup, in which cognitive, neurological and behavioral patterns are more closely associated with the personality traits than schizophrenia. It is known

  13. Effect of naloxone on food competition aggression in food-restricted high and low aggression pigeons (Columba livia)

    OpenAIRE

    Fachinelli C.; Torrecillas M.; Rodríguez Echandía E.L.

    2004-01-01

    We determined the effect of the opiate receptor antagonist naloxone on aggression, emotion, feeder control, and eating behavior in high and low aggression female pigeons maintained at 80% of their normal weight and exposed to food competition interactions. Pigeons were divided into pairs by previously ranked high aggression (total time spent in offensive aggression exceeding 60 s/5 min; N = 6 pairs) and low aggression females (time spent in offensive aggression less than 10 s/5 min; N = 6 pai...

  14. Friendship and Aggression in Elementary School. The friendships of aggressive children and the effects of having aggressive friends

    OpenAIRE

    Palmen, J.M.H.

    2009-01-01

    Research has demonstrated the importance of friendship for children’s adjustment (e.g., Ladd, 1990). However, some children may be less capable of maintaining satisfying relationships with their peers. Aggressive children have been found to experience peer relation difficulties (e.g., Dodge, Coie, Pettit, & Price, 1990). Most research on aggression and peer relations has focused on children’s status within the peer group (group interaction), rather than friendship (dyadic interaction). Group ...

  15. Anomaly-Free Supergravities in Six Dimensions

    CERN Document Server

    Avramis, S D

    2006-01-01

    This thesis reviews minimal N=2 chiral supergravities coupled to matter in six dimensions with emphasis on anomaly cancellation. In general, six-dimensional chiral supergravities suffer from gravitational, gauge and mixed anomalies which render the theories inconsistent at the quantum level. Consistency is restored if the anomalies of the theory cancel via the Green-Schwarz mechanism or generalizations thereof. The anomaly cancellation conditions translate into a certain set of constraints for the gauge group of the theory as well as on its matter content. For the case of ungauged theories these constraints admit numerous solutions but, in the case of gauged theories, the allowed solutions are remarkably few. In this thesis, we examine these anomaly cancellation conditions in detail and we present all solutions to these conditions under certain restrictions on the allowed gauge groups and representations, imposed for practical reasons. We also briefly examine anomaly cancellation in the context of Horava-Witt...

  16. Popliteal vascular entrapment syndrome caused by a rare anomalous slip of the lateral head of the gastrocnemius muscle

    Energy Technology Data Exchange (ETDEWEB)

    Liu, Patrick T.; Moyer, Adrian C.; Huettl, Eric A. [Mayo Clinic Scottsdale, Department of Radiology, Scottsdale (United States); Fowl, Richard J.; Stone, William M. [Mayo Clinic Scottsdale, Department of Vascular Surgery, Scottsdale (United States)

    2005-06-01

    Popliteal vascular entrapment syndrome can result in calf claudication, aneurysm formation, distal arterial emboli, or popliteal vessel thrombosis. The most commonly reported causes of this syndrome have been anomalies of the medial head of the gastrocnemius muscle as it relates to the course of the popliteal artery. We report two cases of rare anomalous slips of the lateral head of the gastrocnemius muscle causing popliteal vascular entrapment syndrome. (orig.)

  17. Popliteal vascular entrapment syndrome caused by a rare anomalous slip of the lateral head of the gastrocnemius muscle

    International Nuclear Information System (INIS)

    Popliteal vascular entrapment syndrome can result in calf claudication, aneurysm formation, distal arterial emboli, or popliteal vessel thrombosis. The most commonly reported causes of this syndrome have been anomalies of the medial head of the gastrocnemius muscle as it relates to the course of the popliteal artery. We report two cases of rare anomalous slips of the lateral head of the gastrocnemius muscle causing popliteal vascular entrapment syndrome. (orig.)

  18. Report of a case of Turner′s syndrome with localized aggressive periodontitis

    Directory of Open Access Journals (Sweden)

    Suresh Kumar Kasagani

    2011-01-01

    Full Text Available Turner′s syndrome is a disorder in females characterized by the absence of all or part of a normal second sex chromosome. It is typically characterized by the combination of physical features and cytogenetics in females. Physical features include short stature, primary amenorrhea, hypogonadism, low hair line at the back of the neck, and digital anomalies. Most affected patients have a 45XO monosomy, but the presence of an abnormal chromosome or mosaicism of 45X with another cell line can also fulfill the criteria. Features seen in the oral cavity of patients diagnosed with Turner′s syndrome include high palatal vault, hypoplastic mandible, prematurely erupting teeth, and orthodontic anomalies. A case of Turner′s syndrome with localized aggressive periodontitis has been reported here.

  19. Network anomaly detection a machine learning perspective

    CERN Document Server

    Bhattacharyya, Dhruba Kumar

    2013-01-01

    With the rapid rise in the ubiquity and sophistication of Internet technology and the accompanying growth in the number of network attacks, network intrusion detection has become increasingly important. Anomaly-based network intrusion detection refers to finding exceptional or nonconforming patterns in network traffic data compared to normal behavior. Finding these anomalies has extensive applications in areas such as cyber security, credit card and insurance fraud detection, and military surveillance for enemy activities. Network Anomaly Detection: A Machine Learning Perspective presents mach

  20. Acardiac anceps: a rare congenital anomaly

    Science.gov (United States)

    Nigam, Aruna; Agarwal, Rohini; Saxena, Pikee; Barla, Jaya

    2014-01-01

    Acardiac twin is a rare congenital anomaly and is exclusively associated with monochorionic twin pregnancies. The abnormalities occur due to abnormal communication between the two fetuses in the form of arterioarterial and venovenous communications, resulting in a grossly abnormal acardiac twin with reduction anomalies mainly of the upper body and gross oedema. Since no two acardiac twins are alike, this case report will add to the acardiac twin anomaly spectrum. PMID:24717594

  1. Acardiac anceps: a rare congenital anomaly

    OpenAIRE

    Nigam, Aruna; Agarwal, Rohini; Saxena, Pikee; Barla, Jaya

    2014-01-01

    Acardiac twin is a rare congenital anomaly and is exclusively associated with monochorionic twin pregnancies. The abnormalities occur due to abnormal communication between the two fetuses in the form of arterioarterial and venovenous communications, resulting in a grossly abnormal acardiac twin with reduction anomalies mainly of the upper body and gross oedema. Since no two acardiac twins are alike, this case report will add to the acardiac twin anomaly spectrum.

  2. Minor congenital anomalies and ataxic cerebral palsy.

    OpenAIRE

    Miller, G

    1989-01-01

    The incidence of minor congenital anomalies was examined in 36 patients with ataxic cerebral palsy, in unaffected family members, and in 100 unrelated control subjects. None of the control subjects or family members had more than four anomalies, and 25 of 36 (69%) of the patients had more than four. The distribution of anomalies differed considerably, with 60% of the index cases having seven or more, and 94% of the controls having three or less. The number occurring in the patients was signif...

  3. On Newton-Cartan trace anomalies

    CERN Document Server

    Auzzi, Roberto; Nardelli, Giuseppe

    2015-01-01

    We classify the trace anomaly for parity-invariant non-relativistic Schr\\"odinger theories in 2+1 dimensions coupled to background Newton-Cartan gravity. The general anomaly structure looks very different from the one in the z=2 Lifshitz theories. The type A content of the anomaly is remarkably identical to that of the relativistic 3+1 dimensional case, suggesting the conjecture that an a-theorem should exist also in the Newton-Cartan context.

  4. Development and Congenital Anomalies of the Pancreas

    OpenAIRE

    Bunsei Nobukawa; Hiroyuki Tadokoro; Masaru Takase

    2011-01-01

    Understanding how the pancreas develops is essential to understand the pathogenesis of congenital pancreatic anomalies. Recent studies have shown the advantages of investigating the development of frogs, mice, and chickens for understanding early embryonic development of the pancreas and congenital anomalies, such as choledochal cysts, anomalous pancreaticobiliary junction, annular pancreas, and pancreas divisum. These anomalies arise from failure of complete rotation and fusion during embryo...

  5. Quantum anomalies and some recent developments

    CERN Document Server

    Fujikawa, Kazuo

    2009-01-01

    Some of the developments related to quantum anomalies and path integrals during the past 10 years are briefly discussed. The covered subjects include the issues related to the local counter term in the context of 2-dimensional path integral bosonization and the treatment of chiral anomaly and index theorem on the lattice. We also briefly comment on a recent analysis of the connection between the two-dimensional chiral anomalies and the four-dimensional black hole radiation.

  6. A Survey on Social Media Anomaly Detection

    OpenAIRE

    Yu, Rose; Qiu, Huida; Wen, Zhen; Lin, Ching-Yung; Liu, Yan

    2016-01-01

    Social media anomaly detection is of critical importance to prevent malicious activities such as bullying, terrorist attack planning, and fraud information dissemination. With the recent popularity of social media, new types of anomalous behaviors arise, causing concerns from various parties. While a large amount of work have been dedicated to traditional anomaly detection problems, we observe a surge of research interests in the new realm of social media anomaly detection. In this paper, we ...

  7. Anomaly-induced charges in baryons

    OpenAIRE

    Eto, Minoru; Hashimoto, Koji; Iida, Hideaki; Ishii, Takaaki; Maezawa, Yu

    2011-01-01

    We show that quantum chiral anomaly of QCD in magnetic backgrounds induces a novel structure of electric charge inside baryons. To illustrate the anomaly effect, we employ the Skyrme model for baryons, with the anomaly-induced gauged Wess-Zumino term (\\pi_0 + (multi-pion)) E_i B_i. Due to this term, the Skyrmions giving a local pion condensation ((\\pi_0 + (multi-pion)) \

  8. On the hyperfine anomaly in Eu isotopes

    OpenAIRE

    Persson, J. R.

    2009-01-01

    A new method for determining the hyperfine anomaly, without knowing the nuclear magnetic moment, is used for the first time on a series of unstable isotopes. The relative large number of experimental data in Eu makes it possible to determine the hyperfine anomaly for a number of unstable isotopes. Calculations of the Bohr-Weisskopf effect and hence the hyperfine anomaly has been performed using the particle-rotor formalism. The result from the calculations and experiments is compared with oth...

  9. EVIDENCE OF ACCRUALS ANOMALY AROUND THE GLOBE

    OpenAIRE

    Diana Muresan

    2014-01-01

    This paper reviews the empirical researchon accruals anomaly around theglobe.Accruals anomaly is defined as the negative relation between accruals and future stock returns.Starting with Sloan (1996) many papers have documented and confirmed the existence of accrualsanomaly in US capital market. Though, recent papers started to examine the existence of accrualsanomaly outside the US.Overall, empirical results suggest that accruals anomaly is a globalphenomenonpresent in developed countries wit...

  10. [How Treatable is Vascular Dementia?].

    Science.gov (United States)

    Mori, Etsuro

    2016-04-01

    Vascular dementia is an umbrella term, encompassing the pathological changes in the brain due to cerebrovascular disease that result in dementia. Vascular dementia is the second most common form of dementia, after Alzheimer's disease. In this paper, I outline the concept of vascular dementia, the key aspects of the disease that are yet to be clarified, and the current status of clinical trials. Assessing these factors, I discuss how treatable vascular dementia presently is. Use of the term'vascular dementia'is riddled with uncertainties regarding disease classification, and non-standardized diagnostic criteria. There are difficulties in determining the exact relationship between cerebrovascular pathology and cognitive impairment. The comorbid effects of Alzheimer's pathology in some individuals also present an obstacle to reliable clinical diagnosis, and hinder research into effective management approaches. Vascular dementia is preventable and treatable, as there are established primary and secondary prevention measures for the causative cerebrovascular diseases, such as vascular risk factor intervention, antiplatelet therapy, and anticoagulation, amongst others. However, unlike Alzheimer's disease, there are no established symptomatic treatments for vascular dementia. Clinical trials of cholinesterase inhibitors and memantine indicate that they produce small cognitive benefits in patients with vascular dementia, though the exact clinical significance of these is uncertain. Data are insufficient to support the widespread use of these drugs in vascular dementia. Rehabilitation and physical and cognitive exercise may be beneficial, but evidence of cognitive benefit and relief of neuropsychiatric symptoms due to exercise is lacking. PMID:27056862

  11. Conscious and unconscious detection of semantic anomalies.

    Science.gov (United States)

    Hannon, Brenda

    2015-01-01

    When asked What superhero is associated with bats, Robin, the Penguin, Metropolis, Catwoman, the Riddler, the Joker, and Mr. Freeze? people frequently fail to notice the anomalous word Metropolis. The goals of this study were to determine whether detection of semantic anomalies, like Metropolis, is conscious or unconscious and whether this detection is immediate or delayed. To achieve these goals, participants answered anomalous and nonanomalous questions as their reading times for words were recorded. Comparisons between detected versus undetected anomalies revealed slower reading times for detected anomalies-a finding that suggests that people immediately and consciously detected anomalies. Further, comparisons between first and second words following undetected anomalies versus nonanomalous controls revealed some slower reading times for first and second words-a finding that suggests that people may have unconsciously detected anomalies but this detection was delayed. Taken together, these findings support the idea that when we are immediately aware of a semantic anomaly (i.e., immediate conscious detection) our language processes make immediate adjustments in order to reconcile contradictory information of anomalies with surrounding text; however, even when we are not consciously aware of semantic anomalies, our language processes still make these adjustments, although these adjustments are delayed (i.e., delayed unconscious detection). PMID:25624136

  12. Associativity Anomaly in String Field Theory

    OpenAIRE

    Bars, Itzhak; Matsuo, Yutaka

    2002-01-01

    We give a detailed study of the associativity anomaly in open string field theory from the viewpoint of the split string and Moyal formalisms. The origin of the anomaly is reduced to the properties of the special infinite size matrices which relate the conventional open string to the split string variables, and is intimately related to midpoint issues. We discuss two steps to cope with the anomaly. We identify the field subspace that causes the anomaly which is related to the existence of clo...

  13. MRI of central nervous system anomalies

    International Nuclear Information System (INIS)

    MRI was very useful in the evaluation of congenital anomalies of central nervous system as well as other nervous system disease with three-dimensional spatial resolution. We had experienced MRI of central nervous system anomalies, demonstrated characterisitic findings in each anomaly. MRI is useful to observe the coronal, horizontal and sagittal images of the brain and spinal cord in order to discuss the etiological mechanisms of spinal dysraphysm and its associated anomalies. In case of spina bifida cystica MRI was available to decide operative indication for radical operation and tetherd cord developed from postoperative scar or accompanied intraspinal lesions. (author)

  14. MRI of central nervous system anomalies

    Energy Technology Data Exchange (ETDEWEB)

    Izawa, M.; Oikawa, A.; Matoba, A.

    1987-05-01

    MRI was very useful in the evaluation of congenital anomalies of central nervous system as well as other nervous system disease with three-dimensional spatial resolution. We had experienced MRI of central nervous system anomalies, demonstrated characterisitic findings in each anomaly. MRI is useful to observe the coronal, horizontal and sagittal images of the brain and spinal cord in order to discuss the etiological mechanisms of spinal dysraphysm and its associated anomalies. In case of spina bifida cystica MRI was available to decide operative indication for radical operation and tetherd cord developed from postoperative scar or accompanied intraspinal lesions.

  15. Anomaly-Free Sets of Fermions

    CERN Document Server

    Batra, P; Spivak, D; Batra, Puneet; Dobrescu, Bogdan A.; Spivak, David

    2006-01-01

    We present new techniques for finding anomaly-free sets of fermions. Although the anomaly cancellation conditions typically include cubic equations with integer variables that cannot be solved in general, we prove by construction that any chiral set of fermions can be embedded in a larger set of fermions which is chiral and anomaly-free. Applying these techniques to extensions of the Standard Model, we find anomaly-free models that have arbitrary quark and lepton charges under an additional U(1) gauge group.

  16. Galilean anomalies and their effect on hydrodynamics

    Science.gov (United States)

    Jain, Akash

    2016-03-01

    We study flavor and gravitational anomalies in Galilean theories coupled to torsional Newton-Cartan backgrounds. We establish that the relativistic anomaly inflow mechanism with an appropriately modified anomaly polynomial can be used to generate these anomalies. Similar to the relativistic case, we find that Galilean anomalies also survive only in even dimensions. Further, these anomalies only effect the flavor and rotational symmetries of a Galilean theory; in particular, the Milne boost symmetry remains nonanomalous. We also extend the transgression machinery used in relativistic fluids to Galilean fluids, and use it to determine how these anomalies affect the constitutive relations of a Galilean fluid. Unrelated to the Galilean fluids, we propose an analogue of the off-shell second law of thermodynamics for relativistic fluids, to include torsion and a conserved spin current in the vielbein formalism. Interestingly, we find that even in the absence of spin current and torsion the entropy currents in the two formalisms are different: while the usual entropy current gets a contribution from the gravitational anomaly, the entropy current in the vielbein formalism does not have any anomaly-induced part.

  17. Anomaly-free sets of fermions

    Energy Technology Data Exchange (ETDEWEB)

    Batra, Puneet; /Argonne; Dobrescu, Bogdan A.; /Fermilab; Spivak, David; /UC, Berkeley, Math. Dept.

    2005-10-01

    We present new techniques for finding anomaly-free sets of fermions. Although the anomaly cancellation conditions typically include cubic equations with integer variables that cannot be solved in general, we prove by construction that any chiral set of fermions can be embedded in a larger set of fermions which is chiral and anomaly-free. Applying these techniques to extensions of the Standard Model, we find anomaly-free models that have arbitrary quark and lepton charges under an additional U(1) gauge group.

  18. Initial scalar magnetic anomaly map from Magsat

    Science.gov (United States)

    Langel, R. A.; Phillips, J. D.; Horner, R. J.

    1982-01-01

    Magsat data acquired during the November 1979-June 1980 mission was used to derive a scalar magnetic anomaly map covering +50 to -50 deg geographic latitude, and the separation of anomaly fields from core and external fields was accomplished by techniques developed for POGO satellite data. Except in the Atlantic and Pacific at latitudes south of -15 deg, comparison of the Magsat map with its POGO data-derived counterpart shows basic anomaly patterns to be reproducible, and higher resolution due to Magsat's lower measurement altitude. Color-coded scalar anomaly maps are presented for both satellites.

  19. Satellite Magnetic Anomalies of Africa and Europe

    Science.gov (United States)

    Hinze, W. J.; Vonfrese, R. R. B. (Principal Investigator); Olivier, R.

    1984-01-01

    Preliminary MAGSAT scalar magnetic anomaly data of Africa, Europe, and adjacent marine areas were reduced to the pole assuming a constant inducing Earth's magnetic field of 60,000 nT. This process leads to a consistent anomaly data set free from marked variations in directional and intensity effects of the Earth's magnetic field over this extensive region. The resulting data are correlated with long wave length-pass filtered free-air gravity anomalies; regional heat flow, and tectonic data to investigate magatectonic elements and the region's geologic history. Magnetic anomalies are related to both ancient as well as more recent Cenozoic structural features.

  20. The "Parity" Anomaly On An Unorientable Manifold

    CERN Document Server

    Witten, Edward

    2016-01-01

    The "parity" anomaly -- more accurately described as an anomaly in time-reversal or reflection symmetry -- arises in certain theories of fermions coupled to gauge fields and/or gravity in a spacetime of odd dimension. The "parity" anomaly has traditionally been studied on orientable manifolds only, but recent developments involving topological superconductors have made it clear that one can get more information by asking what happens on an unorientable manifold. In this paper, we analyze the "parity" anomaly for fermions coupled to gauge fields and gravity in $2+1$ dimensions. We consider applications to gapped boundary states of a topological superconductor and to M2-branes in string/M-theory.

  1. Ploidy, cytokinetics, and histology features of aggressive versus less aggressive uterine cervical squamous cell carcinomas

    International Nuclear Information System (INIS)

    The authors are investigating the interrelationships of flow cytometric measured ploidy, S-fraction with histology features of uterine cervical squamous cell cancers in an attempt to identify aggressive, high risk tumors and less aggressive tumors. Experimentally, pre-radiotherapy biopsy specimens are being studied using flow ploidy and cell-cycle analysis and microscopic scoring for histology features. The results to date for some 200 patients indicate that there are identifyable aggressive tumors, at high risk for 2 yr local control within each stage of disease and differentiation category (WD, MD, PD). These aggressive tumors usually have high degree DNA abnormalities (triploid or greater), high proliferative activity (%S≥20) compared to the less aggressive tumors characterized by diploid/near diploid DNA content, low to moderate %S (2-19, mean 12). Expression of high S-fraction appears to reflect high growth activity or growth potential and characterizes the aggressive tumors

  2. Comparative Analysis of Personality Structures of the Perpetrators of Aggressive and Non-aggressive Offense

    Directory of Open Access Journals (Sweden)

    Kalashnikova A.S.,

    2014-11-01

    Full Text Available problem of the emergence of aggressive behavior is seen through the analysis of the relationship of proagressive and inhibiting aggression personality structures. The study involved 54 men serving sentences for criminal offenses, of which 24 were accused for violent offenses and 30 - for offenses without resorting to violence. We used questionnaires to study the proagressive and deterring aggression personality structures. Statistical analysis was performed to reveal significant differences between groups and to determine correlations. On this basis, the correlations were interpreted with the help of not only quantitative but also qualitative analysis. The results showed no significant differences in the level of expression of aggression and aggression inhibitors between treatment groups, but we identified qualitative differences in the structural analysis of data from individual psychological characteristics that are expected to distinguish aggressive offenders from the perpetrators without violence.

  3. Effects of deindividuating situational cues and aggressive models on subjective deindividuation and aggression.

    Science.gov (United States)

    Prentice-Dunn, S; Rogers, R W

    1980-07-01

    This experiment demonstrated that a subjective state of deindividuation mediates the effect of deindividuating situational cues on aggression displayed by small groups (n = 4) of coacting aggressors. The deindividuated state was composed of two factors, Self-Awareness and Altered Experiencing, both of which had a causal influence on aggressive behavior. These data are interpreted in terms of deindividuation theories which assume that certain input variables reduce self-awareness and concern about social evaluation and thereby weaken the restraints against expressing antisocial behavior. Also as predicted, compared with a no-model control condition, a high-aggressive model disinhibited overt displays of aggression, whereas a low-aggressive model inhibited aggression among both individuated and deindividuated group members. PMID:7411390

  4. Breast Cancers Between Mammograms Have Aggressive Features

    Science.gov (United States)

    Breast cancers that are discovered in the period between regular screening mammograms—known as interval cancers—are more likely to have features associated with aggressive behavior and a poor prognosis than cancers found via screening mammograms.

  5. Electronic Aggression: New Technology and Youth Violence

    Science.gov (United States)

    ... Resources Featured Topic: Opportunities for Action Featured Topic: Bullying Research Featured Topic: Prevent Gang Membership Featured Topic: School Violence Data & Statistics Risk & Protective Factors Prevention Prevention Tools & Resources Featured Topic: Electronic Aggression Funded ...

  6. Risperidone for Aggressive Behavior in ADHD

    Directory of Open Access Journals (Sweden)

    J Gordon Millichap

    2007-05-01

    Full Text Available The effects of risperidone augmentation for treatment-resistant aggression in children with ADHD were evaluated in a placebo-controlled pilot study at the University of Miami Miller School of Medicine, FL.

  7. Research: Television Violence and Aggressive Behavior.

    Science.gov (United States)

    Wurtzel, Alan

    1977-01-01

    Summarizes the major research findings on the relationship between television violence and aggressive behavior; concludes that, while there is no definitive proof that such a relationship exists, the evidence points strongly in that direction. (GT)

  8. The Vascular Depression Hypothesis: Mechanisms Linking Vascular Disease with Depression

    OpenAIRE

    Taylor, Warren D.; Aizenstein, Howard J.; Alexopoulos, George S.

    2013-01-01

    The ‘Vascular Depression’ hypothesis posits that cerebrovascular disease may predispose, precipitate, or perpetuate some geriatric depressive syndromes. This hypothesis stimulated much research that has improved our understanding of the complex relationships between late-life depression (LLD), vascular risk factors, and cognition. Succinctly, there are well-established relationships between late-life depression, vascular risk factors, and cerebral hyperintensities, the radiological hallmark o...

  9. Breast cancer cells mechanosensing in engineered matrices: Correlation with aggressive phenotype.

    Science.gov (United States)

    Li, Ji; Wu, Yang; Schimmel, Nicholas; Al-Ameen, Mohammad Ali; Ghosh, Gargi

    2016-08-01

    The pathogenesis of cancer is often driven by the modulation of the tumor microenvironment. Recent reports have highlighted that the progressive stiffening of tumor matrix is crucial for malignant transformation. Though extensive work has been done analyzing the mechanotransductive signals involved in tumor progression, it is still not clear whether the stiffness induced changes in cancer cell behavior is conserved across the invasive/aggressive phenotype of cells. Here, we used synthetic hydrogel based cell culture platform to correlate the aggressive potential of the breast cancer cells to the responses to matrix stiffness. The cellular functions such as proliferation, migration, and angiogenic capability were characterized. We report that the proliferation and motility of the highly aggressive cell line MDA-MB-231 increased with increase in matrix rigidity. We also demonstrated for the first time that the change in matrix stiffness stimulated the angiogenic activity of these cells as manifested from enhanced expression of vascular endothelial growth factor (VEGF). Inhibition of actomyosin contractility attenuated proliferation of MDA-MB-231 cells on stiff matrices while promoted the growth on soft gels. In addition, the release of VEGF was reduced upon inhibition of contractility. The less and non-aggressive breast cancer cells, SKBr3 and MCF-7 respectively displayed less dependency on matrix stiffness. PMID:26874251

  10. Meandering right pulmonary vein associated with severe and progressive "idiopathic-like" pulmonary hypertensive vascular disease.

    Science.gov (United States)

    Cuenca, Sofia; Bret, Montserrat; Del Cerro, Maria Jesus

    2016-03-01

    Congenital anomalies of the pulmonary veins are rare. Meandering right pulmonary vein, considered a part of the Scimitar syndrome spectrum, is often an incidental finding during chest imaging. We present the case of a 4-year-old girl diagnosed with meandering pulmonary vein, who developed pulmonary hypertensive disease with an aggressive course, in spite of absence of hypoxia or elevated pulmonary wedge pressure. PMID:26374461

  11. The impact of classroom aggression on the development of aggressive behavior problems in children

    OpenAIRE

    Thomas, Duane E.; Bierman, Karen L.

    2006-01-01

    Prior research suggests that exposure to elementary classrooms characterized by high levels of student aggression may contribute to the development of child aggressive behavior problems. To explore this process in more detail, this study followed a longitudinal sample of 4,907 children and examined demographic factors associated with exposure to high-aggression classrooms, including school context factors (school size, student poverty levels, and rural vs. urban location) and child ethnicity ...

  12. Comparative Analysis of Personality Structures of the Perpetrators of Aggressive and Non-aggressive Offense

    OpenAIRE

    Kalashnikova A.S.,; Vasilenko T.G.

    2014-01-01

    problem of the emergence of aggressive behavior is seen through the analysis of the relationship of proagressive and inhibiting aggression personality structures. The study involved 54 men serving sentences for criminal offenses, of which 24 were accused for violent offenses and 30 - for offenses without resorting to violence. We used questionnaires to study the proagressive and deterring aggression personality structures. Statistical analysis was performed to reveal significant differences b...

  13. Desensitization to Media Violence: Links With Habitual Media Violence Exposure, Aggressive Cognitions, and Aggressive Behavior

    OpenAIRE

    Krahé, Barbara; Möller, Ingrid; Huesmann, L. Rowell; Kirwil, Lucyna; Felber, Juliane; Berger, Anja

    2011-01-01

    This study examined the links between desensitization to violent media stimuli and habitual media violence exposure as a predictor and aggressive cognitions and behavior as outcome variables. Two weeks after completing measures of habitual media violence exposure, trait aggression, trait arousability, and normative beliefs about aggression, undergraduates (N = 303) saw a violent film clip and a sad or a funny comparison clip. Skin conductance level (SCL) was measured continuously, and ratings...

  14. How Food Controls Aggression in Drosophila

    OpenAIRE

    Rod S Lim; Eyrún Eyjólfsdóttir; Euncheol Shin; Pietro Perona; Anderson, David J.

    2014-01-01

    How animals use sensory information to weigh the risks vs. benefits of behavioral decisions remains poorly understood. Inter-male aggression is triggered when animals perceive both the presence of an appetitive resource, such as food or females, and of competing conspecific males. How such signals are detected and integrated to control the decision to fight is not clear. For instance, it is unclear whether food increases aggression directly, or as a secondary consequence of increased social i...

  15. Simulation of electromagnetic aggression on components

    International Nuclear Information System (INIS)

    Numerical simulation techniques can be used for studying the behaviour of electronic components exposed to electromagnetic aggression. This article discusses CW analysis on a CMOS-technology logic NAND gate under electromagnetic aggression of different amplitudes (2.5 V 5 V), frequencies (100 MHz and 1 GHz) and phase. Numerical simulations were conducted using three codes: Spice code was used for solving electronic circuits, and the Atlas and Dessis codes were used for examining internal component behaviour. (authors)

  16. How Food Controls Aggression in Drosophila

    OpenAIRE

    Lim, Rod S.; Eyjólfsdóttir, Eyrún; Shin, Euncheol; Perona, Pietro; Anderson, David J.

    2014-01-01

    How animals use sensory information to weigh the risks vs. benefits of behavioral decisions remains poorly understood. Inter-male aggression is triggered when animals perceive both the presence of an appetitive resource, such as food or females, and of competing conspecific males. How such signals are detected and integrated to control the decision to fight is not clear. For instance, it is unclear whether food increases aggression directly, or as a secondary consequence of increa...

  17. Prevalence of mobile dependency and adolescence aggression

    OpenAIRE

    Tayyebeh Khazaie; Alireza Saadatjoo; Samaneh Dormohamadi; Mansooreh Soleimani; Marzieh Toosinia; Fatemeh Mullah Hassan Zadeh

    2013-01-01

    Background and Aim: Various studies indicate that increasing and complicating use of cell phones in all age groups and in both sexes is associated with aggression. Despite the widespread use of mobile phones in Iran, psychological and behavioral effects of addiction to it and the consequences have not been investigated yet. The present study aimed at determining prevalence of mobile dependency and its relationship with aggression during adolescence in Birjand in 2011. Materials and Methods...

  18. Insight, psychosis and aggressive behaviour in mania

    OpenAIRE

    Itxaso González-Ortega; Fernando Mosquera; Enrique Echeburúa; Ana González-Pinto

    2010-01-01

    Background and Objectives: Aggressiveness is a common component of manic symptoms. The aim of this study was to determine the clinical characteristics associated with aggressive behaviour in bipolar patients with acute manic episodes. Methods: A study was carried out with 173 patients who met the DSM-IV criteria for manic or mixed bipolar disorder. Clinical and demographic variables were evaluated using the Positive and Negative Symptoms Scale (PANSS), the Young Mania Rating Scale (YMRS), the...

  19. Hormones and aggression in childhood and adolescence

    OpenAIRE

    Ramirez, J. Martin

    2003-01-01

    This review is a survey on recent psychobiosocial studies on association between hormones and aggression/violence in children and adolescents, with a special focus on puberty, given the rapid changes in both hormones and behavior occurring during that developmental period. Since it cannot be assumed that all readers have much background knowledge, it inevitably begins with some comments about the concept and multifaceted nature of aggression, as well as with a brief reminding about hormone ca...

  20. Aggressive angiomyxoma of the vulva: dramatic response to gonadotropin-releasing hormone agonist therapy

    Directory of Open Access Journals (Sweden)

    Azar Danesh

    2007-08-01

    Full Text Available

    Aggressive angiomyxoma is a rare soft tissue neoplasm that usually arises within the perineum. It often occurs as a vulvar mass and clinically simulates a Bartholin's gland cyst. Most patients are in the second or third decade of life, but some cases have also been reported in children. This is the report of a 21 year old woman with 4.5 × 3 × 1.5 cm mass in right labia major. The patient underwent wide local excision surgical treatment. Histological examination showed high vascular myxoid tumor containing spindle cells. Immunohistochemical study of cells showed positive reaction to estrogen and progesterone and negative reaction to S100, SMA and desmin. Treatment with a gonadotropin-releasing hormone agonist was administered to deal with residual tumor and prevent local recurrence for 6 months.
    KEY WORDS: Aggressive angiomyxoma, vulva, pregnancy, Gonadotropin releasing hormone agonist.

  1. Abdominal Vascular Catastrophes.

    Science.gov (United States)

    Singh, Manpreet; Koyfman, Alex; Martinez, Joseph P

    2016-05-01

    Abdominal vascular catastrophes are among the most challenging and time sensitive for emergency practitioners to recognize. Mesenteric ischemia remains a highly lethal entity for which the history and physical examination can be misleading. Laboratory tests are often unhelpful, and appropriate imaging must be quickly obtained. A multidisciplinary approach is required to have a positive impact on mortality rates. Ruptured abdominal aortic aneurysm likewise may present in a cryptic fashion. A specific type of ruptured aneurysm, the aortoenteric fistula, often masquerades as the more common routine gastrointestinal bleed. The astute clinician recognizes that this is a more lethal variant of gastrointestinal hemorrhage. PMID:27133247

  2. Social intelligence, empathy, and aggressive behavior: Is a stereotype of aggressive individual as socially incompetent inaccurate?

    Directory of Open Access Journals (Sweden)

    Marina Vidmar

    2012-03-01

    Full Text Available In the present research, which was carried out on 187 high school students (86 girls and 101 boys, we examined to what extent different aspects of social intelligence contribute to indirect and direct aggression and to what extent empathy can act as a mitigator of aggression. We used The Aggression Questionnaire to measure physical aggression, IAS-A (which includes Social Exclusion, Use of Malicious Humour and Guilt Induction sub-scales to measure indirect aggression, TSIS (which includes Social Information Processing, Social Skills and Social Awareness sub-scales to measure social intelligence and IRI (Perspective Taking and Empathic Concern sub-scales. The results confirmed our expectations that the cognitive aspect of empathy acts as an inhibitor of both direct and indirect aggression. The relationship between the ability of processing social information and indirect aggresssion was positive, whereas the relationship between social awareness and indirect aggression was negative, which shows that the relationships between various aspects of social intelligence and aggression are complex. People who have a high degree of social intelligence but do not have the tendency to take the other's perspective can use their abilities (especially social information processing to performn less evident and less prosecuted forms of aggressive behaviour which still have deleterious effects on interpersonal relationships.

  3. Microfluidic Technology in Vascular Research

    Directory of Open Access Journals (Sweden)

    A. D. van der Meer

    2009-01-01

    Full Text Available Vascular cell biology is an area of research with great biomedical relevance. Vascular dysfunction is involved in major diseases such as atherosclerosis, diabetes, and cancer. However, when studying vascular cell biology in the laboratory, it is difficult to mimic the dynamic, three-dimensional microenvironment that is found in vivo. Microfluidic technology offers unique possibilities to overcome this difficulty. In this review, an overview of the recent applications of microfluidic technology in the field of vascular biological research will be given. Examples of how microfluidics can be used to generate shear stresses, growth factor gradients, cocultures, and migration assays will be provided. The use of microfluidic devices in studying three-dimensional models of vascular tissue will be discussed. It is concluded that microfluidic technology offers great possibilities to systematically study vascular cell biology with setups that more closely mimic the in vivo situation than those that are generated with conventional methods.

  4. MRI evaluation of vascular dementia

    Institute of Scientific and Technical Information of China (English)

    Yicheng Liu; Hongxing Zhang; Wei Huang; Wenjun Wan; Hongfen Peng

    2006-01-01

    OBJECTTVE: To explain the association between vascular dementia and the cranial MRI manifestations, and recognize the value of cranial MRI in the early diagnosis of vascular dementia and the assessment of disease conditions.DATA SOURCES: Pubmed database was searched to identify articles about the cranial MRI manifestations of patients with vascular dementia published in English from January 1992 to June 2006 by using the key words of "MRI, vascular dementia". Others were collected by searching the name of journals and title of articles in the Chinese full-text journal database.STUDY SELECTTON: The collected articles were primarily checked, those correlated with the cranial MRI manifestations of patients with vascular dementia were selected, while the obviously irrelative ones were excluded, and the rest were retrieved manually, the full-texts were searched.DATA EXTRACTION: Totally 255 articles were collected, 41 of them were involved, and the other 214 were excluded.DATA SYNTHESIS: MRI can be taken as one of the effective methods for the early diagnosis and disease evaluation of vascular dementia. White matter lesions are the important risk factors of vascular dementia.Vascular dementia is accompanied by the atrophy of related brain sites, but further confirmation is needed to investigate whether there is significant difference. MRI can be used to quantitatively investigate the infarcted sites and sizes of patients with vascular dementia after infarction, but there is still lack of systematic investigation on the association of the infarcted sites and sizes with the cognitive function of patients with vascular dementia.CONCLUSTON: Cranial MRI can detect the symptoms of vascular dementia at early period, so that corresponding measures can be adopted to prevent and treat vascular dementia in time.

  5. A STUDY OF CRANIOFACIAL CONGENITAL ANOMALIES IN THE MALWA REGION (MADHYA PRADESH

    Directory of Open Access Journals (Sweden)

    Seema

    2016-02-01

    Full Text Available Development of foetus is a complex chain of events, millions of factors affect it. The rapid decline in the infant mortality & morbidity in the developed countries has focused the attention of pediatricians on the problems of congenital malformations. It is impossible to know all the factors at this juncture. But so far we have come to know some factors responsible for these congenital malformations. A study was done to detect various craniofacial congenital anomalies in Malwa region (M.P. with the aim to know various etiological factors and to emphasize importance of early treatment to prevent disfigurement and functional defects; 120 patients with craniofacial congenital anomalies attending government and private hospitals of the Indore city during the period of 01/06/2009 to 31/12/2010 were taken for the study. These patients were examined for different craniofacial congenital anomalies. A detailed history and examination was carried out to evaluate relationship of sex, religion, socioeconomic status, environmental factors, maternal age, parity, occupation of parents with various craniofacial anomalies. We detected various craniofacial congenital anomalies ranging from cleft lip and palate, ear deformities, macrostoma, nose deformities, ptosis, facial nerve paralysis and vascular malformations. Most common anomaly was cleft lip and palate followed by haemangioma, hairy naevus, ear deformities and ptosis. These anomalies were significantly high in children belonging to low socioeconomic group. Exposure of pregnant mothers to agricultural chemicals and smoking were other significant factors. This study also shows that incidence of cleft lip and palate was relatively high in children who were born to mothers having age less than 20 years.

  6. Relational Aggression and Academic Performance in Elementary School

    Science.gov (United States)

    Risser, Scott D.

    2013-01-01

    To investigate the relationship between relational aggression and school performance, this study examined the relative and combined associations among relational aggression, overt aggression, and victimization and children's academic performance. Additionally this study examined the relative associations among relational and overt aggression and…

  7. The dopaminergic system and aggression in laying hens

    Science.gov (United States)

    The dopaminergic system regulates aggression in humans and other mammals. To investigate if birds with genetic propensity for high and low aggressiveness may exhibit distinctly different aggressive mediation via dopamine (DA) D1 and D2 receptor pathways, two high aggressive (DXL and LGPS) and one lo...

  8. Identifying cognitive predictors of reactive and proactive aggression

    NARCIS (Netherlands)

    Brugman, S.; Lobbestael, J.; Arntz, A.R.; Cima, M.; Schumann, T.; Dambacher, F.

    2015-01-01

    The aim of this study was to identify implicit cognitive predictors of aggressive behavior. Specifically, the predictive value of an attentional bias for aggressive stimuli and automatic association of the self and aggression was examined for reactive and proactive aggressive behavior in a non-clini

  9. Identifying cognitive predictors of reactive and proactive aggression

    NARCIS (Netherlands)

    S. Brugman; J. Lobbestael; A. Arntz; M. Cima; T. Schuhmann; F. Dambacher; A.T. Sack

    2014-01-01

    The aim of this study was to identify implicit cognitive predictors of aggressive behavior. Specifically, the predictive value of an attentional bias for aggressive stimuli and automatic association of the self and aggression was examined for reactive and proactive aggressive behavior in a non-clini

  10. Vascular Remodeling in Experimental Hypertension

    Directory of Open Access Journals (Sweden)

    Norma R. Risler

    2005-01-01

    Full Text Available The basic hemodynamic abnormality in hypertension is an increased peripheral resistance that is due mainly to a decreased vascular lumen derived from structural changes in the small arteries wall, named (as a whole vascular remodeling. The vascular wall is an active, flexible, and integrated organ made up of cellular (endothelial cells, smooth muscle cells, adventitia cells, and fibroblasts and noncellular (extracellular matrix components, which in a dynamic way change shape or number, or reorganize in response to physiological and pathological stimuli, maintaining the integrity of the vessel wall in physiological conditions or participating in the vascular changes in cardiovascular diseases such as hypertension. Research focused on new signaling pathways and molecules that can participate in the mechanisms of vascular remodeling has provided evidence showing that vascular structure is not only affected by blood pressure, but also by mechanisms that are independent of the increased pressure. This review will provide an overview of the evidence, explaining some of the pathophysiologic mechanisms participating in the development of the vascular remodeling, in experimental models of hypertension, with special reference to the findings in spontaneously hypertensive rats as a model of essential hypertension, and in fructose-fed rats as a model of secondary hypertension, in the context of the metabolic syndrome. The understanding of the mechanisms producing the vascular alterations will allow the development of novel pharmacological tools for vascular protection in hypertensive disease.

  11. Aggressive behaviors in the psychiatric emergency service

    Directory of Open Access Journals (Sweden)

    Yves Chaput

    2011-03-01

    Full Text Available Yves Chaput1, Lucie Beaulieu2, Michel Paradis3, Edith Labonté41Department of Psychiatry, McGill University, Montreal (presently in private practice; 2Department of Psychiatry, Haut Richelieu Hospital, Saint-Jean-sur-Richelieu, Quebec; 3Department of Psychiatry, University of Montreal, Montreal; 4Department of Psychiatry, Laval University, Quebec, CanadaIntroduction: Studies of aggressive behaviors in a nonforensic mental health setting have focused primarily on the inpatient ward and, on event prediction, using behavior-based clinical rating scales. Few studies have specifically targeted aggressive behaviors in the psychiatric emergency service or determined whether assessing the demographic and clinical characteristics of such patients might prove useful for their more rapid identification.Methods: We used a prospectively acquired database of over 20,900 visits to four services in the province of Quebec, Canada, over a two-year period from September 2002 onwards. A maximum of 72 variables could be acquired per visit. Visits with aggression (any verbally or physically intimidating behavior, both present and past, were tagged. Binary logistic regressions and cross-tabulations were used to determine whether the profile of a variable differed in visits with aggression from those without aggression.Results: About 7% of visits were marked by current aggression (verbal 49%, physical 12%, verbal and physical 39%. Including visits with a “past only” history of aggression increased this number to 20%. Variables associated with aggression were gender (male, marital status (single/separated, education (high school or less, employment (none, judicial history (any type, substance abuse (prior or active, medication compliance (poor, type of arrival to psychiatric emergency services (involuntary, police, judiciary, landlord, reason for referral (behavioral dyscontrol, diagnosis (less frequent in anxiety disorders, and outcome (more frequently placed under

  12. Spinal vascular malformations

    Energy Technology Data Exchange (ETDEWEB)

    Krings, Timo [University Hospital Aachen, Department of Neuroradiology, Aachen (Germany); University Hospital Aachen, Department of Neurosurgery, Aachen (Germany); Mull, Michael; Thron, Armin [University Hospital Aachen, Department of Neuroradiology, Aachen (Germany); Gilsbach, Joachim M. [University Hospital Aachen, Department of Neurosurgery, Aachen (Germany)

    2005-02-01

    Spinal vascular malformations are rare diseases that consist of true inborn cavernomas and arteriovenous malformations (including perimedullary fistulae, glomerular and juvenile AVMs) and presumably acquired dural arteriovenous fistulae. This review article gives an overview of the imaging features both on MRI and angiography, the differential diagnoses, the clinical symptomatology and the potential therapeutic approaches to these diseases. It is concluded that MRI is the diagnostic modality of first choice in suspected spinal vascular malformation and should be complemented by selective spinal angiography. Treatment in symptomatic patients offers an improvement in the prognosis, but should be performed in specialized centers. Patients with spinal cord cavernomas and perimedullary fistulae type I are surgical candidates. Dural arteriovenous fistulae can either be operated upon or can be treated by an endovascular approach, the former being a simple, quick and secure approach to obliterate the fistula, while the latter is technically demanding. In spinal arteriovenous malformations, the endovascular approach is the method of first choice; in selected cases, a combined therapy might be sensible. (orig.)

  13. Spinal vascular malformations

    International Nuclear Information System (INIS)

    Spinal vascular malformations are rare diseases that consist of true inborn cavernomas and arteriovenous malformations (including perimedullary fistulae, glomerular and juvenile AVMs) and presumably acquired dural arteriovenous fistulae. This review article gives an overview of the imaging features both on MRI and angiography, the differential diagnoses, the clinical symptomatology and the potential therapeutic approaches to these diseases. It is concluded that MRI is the diagnostic modality of first choice in suspected spinal vascular malformation and should be complemented by selective spinal angiography. Treatment in symptomatic patients offers an improvement in the prognosis, but should be performed in specialized centers. Patients with spinal cord cavernomas and perimedullary fistulae type I are surgical candidates. Dural arteriovenous fistulae can either be operated upon or can be treated by an endovascular approach, the former being a simple, quick and secure approach to obliterate the fistula, while the latter is technically demanding. In spinal arteriovenous malformations, the endovascular approach is the method of first choice; in selected cases, a combined therapy might be sensible. (orig.)

  14. Pulmonary vascular diseases.

    Science.gov (United States)

    Mélot, C; Naeije, R

    2011-04-01

    Diseases of the pulmonary vasculature are a cause of increased pulmonary vascular resistance (PVR) in pulmonary embolism, chronic thromboembolic pulmonary hypertension (CTEPH), and pulmonary arterial hypertension or decreased PVR in pulmonary arteriovenous malformations on hereditary hemorrhagic telangiectasia, portal hypertension, or cavopulmonary anastomosis. All these conditions are associated with a decrease in both arterial PO2 and PCO2. Gas exchange in pulmonary vascular diseases with increased PVR is characterized by a shift of ventilation and perfusion to high ventilation-perfusion ratios, a mild to moderate increase in perfusion to low ventilation-perfusion ratios, and an increased physiologic dead space. Hypoxemia in these patients is essentially explained by altered ventilation-perfusion matching amplified by a decreased mixed venous PO2 caused by a low cardiac output. Hypocapnia is accounted for by hyperventilation, which is essentially related to an increased chemosensitivity. A cardiac shunt on a patent foramen ovale may be a cause of severe hypoxemia in a proportion of patients with pulmonary hypertension and an increase in right atrial pressure. Gas exchange in pulmonary arteriovenous malformations is characterized by variable degree of pulmonary shunting and/or diffusion-perfusion imbalance. Hypocapnia is caused by an increased ventilation in relation to an increased pulmonary blood flow with direct peripheral chemoreceptor stimulation by shunted mixed venous blood flow. PMID:23737196

  15. Limb anomalies in the CHARGE association.

    OpenAIRE

    Meinecke, P.; Polke, A; Schmiegelow, P

    1989-01-01

    We report a male infant with iris coloboma, choanal atresia, postnatal retardation of growth and psychomotor development, genital anomaly, ear anomaly, and anal atresia. In addition, there was cutaneous syndactyly and nail hypoplasia of the second and third fingers on the right and hypoplasia of the left second finger nail. Comparable observations have rarely been reported and possibly represent genetic heterogeneity.

  16. Effective action for supersymmetrical chiral anomaly

    International Nuclear Information System (INIS)

    It is proved that the consistency conditions of the type of Wess-Zumino conditions are necessary and sufficient for local integrability of supersymmetrical chiral anomaly. The global integrability condition implies discreteness of the coefficient in anomalous action. Explicit formulas for consistent anomalies and corresponding functional depending on superfields of various types are obtained

  17. Photodiode and photomultiplier areal sensitivity anomalies

    Science.gov (United States)

    Youngbluth, O., Jr.

    1977-01-01

    Several silicon photodiodes and photomultipliers were tested to determine signal variations as a light spot was scanned over the photosensitive surface of these detectors. Qualitative and quantitative data is presented to demonstrate the areal sensitivity anomalies. These anomalies are related back to the fabrication techniques of the manufacturers.

  18. Improved prenatal detection of chromosomal anomalies

    DEFF Research Database (Denmark)

    Frøslev-Friis, Christina; Hjort-Pedersen, Karina; Henriques, Carsten U;

    2011-01-01

    Prenatal screening for karyotype anomalies takes place in most European countries. In Denmark, the screening method was changed in 2005. The aim of this study was to study the trends in prevalence and prenatal detection rates of chromosome anomalies and Down syndrome (DS) over a 22-year period....

  19. Remarks on Global Anomalies in RCFT Orientifolds

    CERN Document Server

    Gato-Rivera, Beatriz

    2006-01-01

    We check the list of supersymmetric standard model orientifold spectra of Dijkstra, Huiszoon and Schellekens for the presence of global anomalies, using probe branes. Absence of global anomalies is found to impose strong constraints, but in nearly all cases they are automatically satisfied by the solutions to the tadpole cancellation conditions.

  20. Remarks on global anomalies in RCFT orientifolds

    Energy Technology Data Exchange (ETDEWEB)

    Gato-Rivera, B. [NIKHEF Theory Group, Kruislaan 409, 1098 SJ Amsterdam (Netherlands); Instituto de Matematicas y Fisica Fundamental, CSIC, Serrano 123, Madrid 28006 (Spain); Schellekens, A.N. [NIKHEF Theory Group, Kruislaan 409, 1098 SJ Amsterdam (Netherlands) and Instituto de Matematicas y Fisica Fundamental, CSIC, Serrano 123, Madrid 28006 (Spain) and IMAPP, Radboud Universiteit, Nijmegen (Netherlands)]. E-mail: t58@nikhef.nl

    2006-01-26

    We check the list of supersymmetric standard model orientifold spectra of Dijkstra, Huiszoon and Schellekens for the presence of global anomalies, using probe branes. Absence of global anomalies is found to impose strong constraints, but in nearly all cases they are automatically satisfied by the solutions to the tadpole cancellation conditions.

  1. Indicated preterm birth for fetal anomalies.

    Science.gov (United States)

    Craigo, Sabrina D

    2011-10-01

    Between 2% and 3% of pregnancies are complicated by fetal anomalies. For most anomalies, there is no advantage to late preterm or early-term delivery. The risks of maternal or fetal complication are specific for each anomaly. Very few anomalies pose potential maternal risk. Some anomalies carry ongoing risks to the fetus, such as an increased risk of fetal death, hemorrhage, or organ damage. In a limited number of select cases, the advantages of late preterm or early-term birth may include avoiding an ongoing risk of fetal death related to the anomaly, allowing delivery in a controlled setting with availability of subspecialists and allowing direct care for the neonate with organ injury. The optimal gestational age for delivery cannot be determined for all pregnancies complicated by fetal anomalies. For most pregnancies complicated by anomalies, there is no change to obstetrical management regarding timing of delivery. For those that may benefit from late preterm or early-term delivery, variability exists such that each management plan should be individualized. PMID:21962626

  2. Anomalies of Nuclear Criticality, Revision 6

    Energy Technology Data Exchange (ETDEWEB)

    Clayton, E. D.; Prichard, Andrew W.; Durst, Bonita E.; Erickson, David; Puigh, Raymond J.

    2010-02-19

    This report is revision 6 of the Anomalies of Nuclear Criticality. This report is required reading for the training of criticality professionals in many organizations both nationally and internationally. This report describes many different classes of nuclear criticality anomalies that are different than expected.

  3. Chiral Anomaly in Toroidal Carbon Nanotubes

    OpenAIRE

    Sasaki, K.

    2001-01-01

    It is pointed out that the chiral anomaly in 1+1 dimensions should be observed in toroidal carbon nanotubes on a planar geometry with varying magnetic field. We show that the chiral anomaly is closely connected with the persistent current in a one-dimensional metallic ring.

  4. Levels of Aggression among Turkish Adolescents and Factors Leading to Aggression.

    Science.gov (United States)

    Avci, Dilek; Kilic, Mahmut; Tari Selcuk, Kevser; Uzuncakmak, Tugba

    2016-07-01

    Aggression, an increasing problem among adolescents, is a potential threat to public health as it can lead to violence. Determining the factors causing aggression plays an important role in taking measures to reduce violence. This study aimed at determining the level of aggression among adolescents and at identifying the factors associated with high levels of aggression. This cross-sectional study was conducted with 2,409 Turkish adolescents. Data were collected with the Socio-demographic Questionnaire, Aggression Scale, Perceived Social Support Scale, and Communication Skills Attitude Scale. Data were analyzed using descriptive statistics, the chi-square test, t-test, and logistic regression. The participants' mean aggression score was 91.83 ± 24.05, and 24.0% of the adolescents' aggression levels rated high. According to the logistic regression model, aggression was 1.26 times higher among males, 1.92 times higher among those who perceived their mental health as poor, 1.58 times higher among those with suicidal ideation, 1.29 times higher among those who did not get prepared for university entrance exams, and 1.62 times higher among those who perceived their school performance as poor. Perceived family social support was a protective factor against high aggression. Approximately one out of every four adolescents in the two Turkish high schools where the study was conducted was determined to display high levels of aggression. Therefore, in order to reduce aggression among adolescents, programs such as coping management and coping with anger should be applied by nurses. Programs should include not only students but also families. PMID:27111434

  5. Human periprostatic adipose tissue promotes prostate cancer aggressiveness in vitro

    Directory of Open Access Journals (Sweden)

    Ribeiro Ricardo

    2012-04-01

    Full Text Available Abstract Background Obesity is associated with prostate cancer aggressiveness and mortality. The contribution of periprostatic adipose tissue, which is often infiltrated by malignant cells, to cancer progression is largely unknown. Thus, this study aimed to determine if periprostatic adipose tissue is linked with aggressive tumor biology in prostate cancer. Methods Supernatants of whole adipose tissue (explants or stromal vascular fraction (SVF from paired fat samples of periprostatic (PP and pre-peritoneal visceral (VIS anatomic origin from different donors were prepared and analyzed for matrix metalloproteinases (MMPs 2 and 9 activity. The effects of those conditioned media (CM on growth and migration of hormone-refractory (PC-3 and hormone-sensitive (LNCaP prostate cancer cells were measured. Results We show here that PP adipose tissue of overweight men has higher MMP9 activity in comparison with normal subjects. The observed increased activities of both MMP2 and MMP9 in PP whole adipose tissue explants, likely reveal the contribution of adipocytes plus stromal-vascular fraction (SVF as opposed to SVF alone. MMP2 activity was higher for PP when compared to VIS adipose tissue. When PC-3 cells were stimulated with CM from PP adipose tissue explants, increased proliferative and migratory capacities were observed, but not in the presence of SVF. Conversely, when LNCaP cells were stimulated with PP explants CM, we found enhanced motility despite the inhibition of proliferation, whereas CM derived from SVF increased both cell proliferation and motility. Explants culture and using adipose tissue of PP origin are most effective in promoting proliferation and migration of PC-3 cells, as respectively compared with SVF culture and using adipose tissue of VIS origin. In LNCaP cells, while explants CM cause increased migration compared to SVF, the use of PP adipose tissue to generate CM result in the increase of both cellular proliferation and migration

  6. Trends in hemispheric warm and cold anomalies

    Science.gov (United States)

    Robeson, Scott M.; Willmott, Cort J.; Jones, Phil D.

    2014-12-01

    Using a spatial percentile approach, we explore the magnitude of temperature anomalies across the Northern and Southern Hemispheres. Linear trends in spatial percentile series are estimated for 1881-2013, the most recent 30 year period (1984-2013), and 1998-2013. All spatial percentiles in both hemispheres show increases from 1881 to 2013, but warming occurred unevenly via modification of cold anomalies, producing a reduction in spatial dispersion. In the most recent 30 year period, trends also were consistently positive, with warm anomalies having much larger warming rates than those of cold anomalies in both hemispheres. This recent trend has largely reversed the decrease in spatial dispersion that occurred during the twentieth century. While the period associated with the recent slowdown of global warming, 1998-2013, is too brief to estimate trends reliably, cooling was evident in NH warm and cold anomalies during January and February while other months in the NH continued to warm.

  7. Congenital anomalies of the spine: radiologic findings

    International Nuclear Information System (INIS)

    Congenital anomalies of the spine are frequent and variable. Some are restricted to skeletal structures, while others involve combine neural tube defects or are associated with other multi-systemic disorders. Structural spinal anomalies can be classified according to their location: 1) the vertebral body, 2) the articular process, 3) the lamina with spinous process, 4) the pars interarticularis, 5) the facet joint, 6) the pedicle, or 7) other. Because of similarities between these congenital anomalies and (a) secondary changes involving infection or joint disease and (b) deformities resulting from trauma and uncertain tumorous conditions, significant confusion can occur during diagnosis. Moreover, since the anomalies often give rise to both functional impairment and cosmetic problem, appropriate treatment relies crucially on accurate diagnosis. The authors illustrate the pathogenesis and radiologic findings of the relatively common spinal anomalies confined to skeletal structures

  8. Seasonality of congenital anomalies in Europe

    DEFF Research Database (Denmark)

    Luteijn, Johannes Michiel; Dolk, Helen; Addor, Marie-Claude;

    2014-01-01

    with influenza. RESULTS: We detected statistically significant seasonality in prevalence of anomalies previously associated with influenza, but the conception peak was in June (2.4% excess). We also detected seasonality in congenital cataract (April conceptions, 27%), hip dislocation and/or dysplasia (April, 12......%), congenital hydronephrosis (July, 12%), urinary defects (July, 5%), and situs inversus (December, 36%), but not for nonchromosomal anomalies combined, chromosomal anomalies combined, or other anomalies analyzed. CONCLUSION: We have confirmed previously described seasonality for congenital cataract and hip...... dislocation and/or dysplasia, and found seasonality for congenital hydronephrosis and situs inversus which have not previously been studied. We did not find evidence of seasonality for several anomalies which had previously been found to be seasonal. Influenza does not appear to be an important factor...

  9. Regional magnetic anomaly constraints on continental rifting

    Science.gov (United States)

    Vonfrese, R. R. B.; Hinze, W. J.; Olivier, R.; Bentley, C. R.

    1985-01-01

    Radially polarized MAGSAT anomalies of North and South America, Europe, Africa, India, Australia and Antarctica demonstrate remarkably detailed correlation of regional magnetic lithospheric sources across rifted margins when plotted on a reconstruction of Pangea. These major magnetic features apparently preserve their integrity until a superimposed metamorphoric event alters the magnitude and pattern of the anomalies. The longevity of continental scale magnetic anomalies contrasts markedly with that of regional gravity anomalies which tend to reflect predominantly isostatic adjustments associated with neo-tectonism. First observed as a result of NASA's magnetic satellite programs, these anomalies provide new and fundamental constraints on the geologic evolution and dynamics of the continents and oceans. Accordingly, satellite magnetic observations provide a further tool for investigating continental drift to compliment other lines of evidence in paleoclimatology, paleontology, paleomagnetism, and studies of the radiometric ages and geometric fit of the continents.

  10. Global magnetic anomaly and aurora of Neptune

    Science.gov (United States)

    Cheng, Andrew F.

    1990-01-01

    The large offset and tilt of Neptune's dipole magnetic field combine to create a global magnetic anomaly, analogous to but much more important than earth's South Atlantic Anomaly. Energetic particle precipitation loss within the Neptune anomaly creates 'atmospheric drift shadows' within which particle fluxes are greatly reduced. The energetic particle dropout observed by Voyager near closest approach occurred near the predicted times when Voyager passed within the atmospheric drift shadow. Extremely soft, structured bursts of ions and electrons within the drift shadow may result from plasma wave-induced pitch angle scattering of trapped particles confined near the magnetic equator. The dropout does not necessarily imply that Voyager passed through an earth-like discrete auroral zone, as earlier reported. The ion and electron fluxes observed within the dropout period correspond to particles that must precipitate to Neptune's atmosphere within the anomaly region. This anomaly precipitation can account for a major portion of the ultraviolet emissions previously identified as Neptune aurora.

  11. Sea surface temperature anomalies in the Arabian Sea

    Digital Repository Service at National Institute of Oceanography (India)

    RameshKumar, M.R.

    temperature anomalies for the above regions respectively. An analysis has shown that most of the short duration anomalies (i.e., anomalies with periods less than 4 months) are driven by the surface heat fluxes. The medium duration anomalies (i.e., anomalies...

  12. Aggressive and Nonaggressive Children's Moral Judgments and Moral Emotion Attributions in Situations Involving Retaliation and Unprovoked Aggression

    Science.gov (United States)

    Gasser, Luciano; Malti, Tina; Gutzwiller-Helfenfinger, Eveline

    2012-01-01

    The authors investigated 7- and 9-year-old children's moral understanding of retaliation as compared to unprovoked aggression with regard to their aggressive behavior status. Based on peer ratings, 48 children were selected as overtly aggressive and 91 as nonaggressive. Their moral understanding of retaliation and unprovoked aggression was…

  13. Popular and Nonpopular Subtypes of Physically Aggressive Preadolescents: Continuity of Aggression and Peer Mechanisms during the Transition to Middle School

    Science.gov (United States)

    Shi, Bing; Xie, Hongling

    2012-01-01

    Using peer nominations of physical aggression and perceived popularity in the spring semester of fifth grade, we identified 54 popular aggressive and 42 nonpopular aggressive preadolescents in a diverse sample of 318 participants recruited from an urban school district. Physical aggression in the spring semester of sixth grade was included to…

  14. Effects of Viewing Relational Aggression on Television on Aggressive Behavior in Adolescents: A Three-Year Longitudinal Study

    Science.gov (United States)

    Coyne, Sarah M.

    2016-01-01

    Most researchers on media and aggression have examined the behavioral effects of viewing physical aggression in the media. Conversely, in the current study, I examined longitudinal associations between viewing "relational aggression" on TV and subsequent aggressive behavior. Participants included 467 adolescents who completed a number of…

  15. Cruel Intentions on Television and in Real Life: Can Viewing Indirect Aggression Increase Viewers' Subsequent Indirect Aggression?

    Science.gov (United States)

    Coyne, Sarah M.; Archer, John; Eslea, Mike

    2004-01-01

    Numerous studies have shown that viewing violence in the media can influence an individual's subsequent aggression, but none have examined the effect of viewing indirect aggression. This study examines the immediate effect of viewing indirect and direct aggression on subsequent indirect aggression among 199 children ages 11 to 14 years. They were…

  16. Quantitative Genomics of Aggressive Behavior in Drosophila melanogaster

    OpenAIRE

    Edwards, Alexis C.; Stephanie M Rollmann; Morgan, Theodore J.; Trudy F C Mackay

    2006-01-01

    Synopsis Aggressive behavior is a complex trait affected by numerous interacting genes whose expression depends on the environment. Aggression can be selectively advantageous in the pursuit of mates, territory, or food; however, excessive aggression may be deleterious. Pathological levels of aggression in humans create an enormous burden to society. Although dysfunction of the biogenic amine systems is often associated with alterations in aggressive behavior, this represents only the “tip of ...

  17. Road Users' Risky Behavior: Analysis Focusing on Aggressiveness

    OpenAIRE

    Alica Kalašová; Zuzana Krchová

    2011-01-01

    With transport and traffic developing permanently, we can meet more and more aggressive drivers on roads. We can see various kinds of aggressiveness and aggressive behavior that can lead to dangerous situations which can threaten one's health or even life. The problem of aggressive driving on the roads is becoming more current. Speeding, inappropriate gestures, and nonobservance of safe distance, are only a fraction of the aggressive behavior of many drivers that need to be solved in the road...

  18. Understanding Female Aggression In Situationally Violent Relationships: A Qualitative Study

    OpenAIRE

    Adi, Samar G

    2007-01-01

    The purpose of this multiple case study was to gather information about female aggression in situationally violent relationship. The interviews and surveys of four African-American couples were coded and analyzed to gather information about the impact of female aggression on the relationship, the contextual factors surrounding female aggression, and the motivations for female aggression. The results indicated that female aggression impacts the couple relationship in several ways. First,...

  19. Neurocognitive models of aggression, the antisocial personality disorders, and psychopathy

    OpenAIRE

    Blair, R.

    2001-01-01

    This paper considers neurocognitive models of aggression and relates them to explanations of the antisocial personality disorders. Two forms of aggression are distinguished: reactive aggression elicited in response to frustration/threat and goal directed, instrumental aggression. It is argued that different forms of neurocognitive model are necessary to explain the emergence of these different forms of aggression. Impairments in executive emotional systems (the somatic marke...

  20. Intergenerational Transmission of Relationship Aggression: A Prospective Longitudinal Study

    OpenAIRE

    Cui, Ming; Durtschi, Jared A.; Donnellan, M. Brent; Lorenz, Frederick O.; Conger, Rand D.

    2010-01-01

    The present study examined whether physical and verbal aggression in the family of origin were associated with similar patterns of aggression in young adult couples. Hypotheses were tested using a sample of 213 focal individuals who were followed from adolescence to adulthood. Results suggested that aggression in the family when focal participants were adolescents predicted aggression with romantic partners when participants were adults. The association between interparental aggression and la...

  1. Anomaly Detection in Dynamic Networks

    Energy Technology Data Exchange (ETDEWEB)

    Turcotte, Melissa [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2014-10-14

    Anomaly detection in dynamic communication networks has many important security applications. These networks can be extremely large and so detecting any changes in their structure can be computationally challenging; hence, computationally fast, parallelisable methods for monitoring the network are paramount. For this reason the methods presented here use independent node and edge based models to detect locally anomalous substructures within communication networks. As a first stage, the aim is to detect changes in the data streams arising from node or edge communications. Throughout the thesis simple, conjugate Bayesian models for counting processes are used to model these data streams. A second stage of analysis can then be performed on a much reduced subset of the network comprising nodes and edges which have been identified as potentially anomalous in the first stage. The first method assumes communications in a network arise from an inhomogeneous Poisson process with piecewise constant intensity. Anomaly detection is then treated as a changepoint problem on the intensities. The changepoint model is extended to incorporate seasonal behavior inherent in communication networks. This seasonal behavior is also viewed as a changepoint problem acting on a piecewise constant Poisson process. In a static time frame, inference is made on this extended model via a Gibbs sampling strategy. In a sequential time frame, where the data arrive as a stream, a novel, fast Sequential Monte Carlo (SMC) algorithm is introduced to sample from the sequence of posterior distributions of the change points over time. A second method is considered for monitoring communications in a large scale computer network. The usage patterns in these types of networks are very bursty in nature and don’t fit a Poisson process model. For tractable inference, discrete time models are considered, where the data are aggregated into discrete time periods and probability models are fitted to the

  2. Intra- Versus Intersex Aggression: Testing Theories of Sex Differences Using Aggression Networks.

    Science.gov (United States)

    Wölfer, Ralf; Hewstone, Miles

    2015-08-01

    Two theories offer competing explanations of sex differences in aggressive behavior: sexual-selection theory and social-role theory. While each theory has specific strengths and limitations depending on the victim's sex, research hardly differentiates between intrasex and intersex aggression. In the present study, 11,307 students (mean age = 14.96 years; 50% girls, 50% boys) from 597 school classes provided social-network data (aggression and friendship networks) as well as physical (body mass index) and psychosocial (gender and masculinity norms) information. Aggression networks were used to disentangle intra- and intersex aggression, whereas their class-aggregated sex differences were analyzed using contextual predictors derived from sexual-selection and social-role theories. As expected, results revealed that sexual-selection theory predicted male-biased sex differences in intrasex aggression, whereas social-role theory predicted male-biased sex differences in intersex aggression. Findings suggest the value of explaining sex differences separately for intra- and intersex aggression with a dual-theory framework covering both evolutionary and normative components. PMID:26158924

  3. Behavioural differences between artificially selected aggressive and non-aggressive mice : response to apomorphine

    NARCIS (Netherlands)

    Benus, Rensina F.; Bohus, Bela; Koolhaas, Jaap M.; Oortmerssen, Geert A. van

    1991-01-01

    The present study reports a first attempt to unravel the neurochemical background that underlies the difference in behavioural profiles between aggressive and non-aggressive male mice. For this purpose two bidirectionally selected lines for attack latency (SAL and LAL) were used. In pursuit of anoth

  4. The Relationship between Unstable Self-Esteem and Aggression: Differences in Reactive and Proactive Aggression

    Science.gov (United States)

    Lee, Eunju J.

    2014-01-01

    This study examines whether the instability of self-esteem (i.e., a high intraindividual variability in self-esteem) is differentially associated with different types of aggressive behavior by using a sample of 235 preadolescent children. Self-esteem was measured four times for four consecutive days, and proactive and reactive aggressive behaviors…

  5. The Aggression-Inhibiting and Aggression-Facilitating Influence of Heightened Sexual Arousal.

    Science.gov (United States)

    Baron, Robert A.; Bell, Paul A.

    Eighty-six undergraduate males participated in an experiment designed to investigate the impact of various types of erotic stimuli upon aggression. On the basis of previous research, it was hypothesized that exposure to mild erotic stimuli would tend to inhibit subsequent aggression, while exposure to more arousing stimuli of this type would…

  6. Tectonic interpretation of aeromagnetic anomalies of Turkey

    International Nuclear Information System (INIS)

    Complete text of publication follows. In this presentation, an interpretation of the aeromagnetic anomalies of Turkey will be discussed. Aeromagnetic data acquired by the General Directorate of Mineral Research and Exploration of Turkey (MTA) is used in this study. Sensitivity of these data are suitable for regional studies. The International Geomagnetic Reference Field (IGRF) correction and advanced geophysical data processing methods were applied, and then data were gridded with 5x5 km intervals. Initially, aeromagnetic anomalies were upward continued to be at 2, 3, 5 and 7 km heights (including flight altitude). This application suppressed near surface effects and revealed that the 3 km upward continued aeromagnetic anomaly map is the most convenient map to reflect the deep-seated structures in Anatolia. Then, Reduction to the Pole (RTP) method was applied to the 3 km upward continued anomalies. Hence, it was observed that polarities of the most anomalies were aligned along the North-South direction. It is thought that the remanent magnetization is not existent in the west and the centre of Anatolia, in contrast to the east where polarities of the most anomalies are different from the north-south direction by the presence of strong remanent magnetization. In order to delineate the boundaries of the causative structures, Analytical Signal (AS) method was applied on the aeromagnetic anomalies. A sinuous boundary in the south of Turkey is apparent in the AS map which can be evaluated as suture zone between the Anatolides and non-magnetic African/Arabian Plate. Several important anomalies became more visible after AS transformation in Anatolia. These are, from west to east, the Suluklu-Cihanbeyli-Goloren (SCGA), Konya (KA), Cappadocian Volcanic Complex (CVCA) and Van Lake (VLA) magnetic anomalies. The East Anatolian Contractional Province Anomalies (EACPA) are intensively gathered in the East Anatolia where intensive earthquake activities are also observed. Magnetic

  7. Oxytocin inhibits aggression in female Syrian hamsters.

    Science.gov (United States)

    Harmon, A C; Huhman, K L; Moore, T O; Albers, H E

    2002-12-01

    Dominant subordinate relationships are formed as the result of social conflict and are maintained at least in part by communication. At this time, little is known about the neural mechanisms that are responsible for coordinating the social behaviours (e.g. aggression) that occur in association with the formation and maintenance of these relationships. The purpose of the present study was to investigate the role of oxytocin (OXT) within the medial preoptic anterior hypothalamic continuum (MPOA-AH) in the control of aggression in female hamsters. OXT injected into the MPOA-AH immediately before testing significantly reduced the duration of aggression in a dose-dependent manner. Injection of an OXT antagonist 30 min before testing significantly increased the duration of aggression. In contrast, the duration of aggression was not altered when hamsters were tested either 30 min after injection of OXT or immediately following injection of an OXT-antagonist. These data support the hypothesis that OXT release within the MPOA-AH regulates social behaviours important in the formation and maintenance of dominant subordinate relationships in female hamsters. PMID:12472877

  8. A high aggression strategy for smaller males.

    Directory of Open Access Journals (Sweden)

    P Andreas Svensson

    Full Text Available Male-male conflict is common among animals, but questions remain as to when, how and by whom aggression should be initiated. Factors that affect agonistic strategies include residency, the value of the contested resource and the fighting ability of the two contestants. We quantified initiation of aggression in a fish, the desert goby, Chlamydogobius eremius, by exposing nest-holding males to a male intruder. The perceived value of the resource (the nest was manipulated by exposing half of the residents to sexually receptive females for two days before the trial. Resident male aggression, however, was unaffected by perceived mating opportunities. It was also unaffected by the absolute and relative size of the intruder. Instead resident aggression was negatively related to resident male size. In particular, smaller residents attacked sooner and with greater intensity compared to larger residents. These results suggest that resident desert goby males used set, rather than conditional, strategies for initiating aggression. If intruders are more likely to flee than retaliate, small males may benefit from attacking intruders before these have had an opportunity to assess the resident and/or the resource.

  9. Oil and resource-backed aggression

    Energy Technology Data Exchange (ETDEWEB)

    Colgan, Jeff, E-mail: colgan@american.ed [International Relations, American University (United States)

    2011-03-15

    A common misperception about oil politics is that it has a uniform, monolithic effect on policy development. This paper argues that in fact the net political effect of oil varies dramatically depending on the nature of the petrostate. It shows that oil income, when combined with revolutionary governments in petrostates, generates strong incentives for foreign policy aggression and international conflict. The aggressiveness of petro-revolutionary states is shown to have consequences in both military and economic spheres of international relations. Militarily, the aggressiveness of this type of state leads to a high rate of armed conflicts. Economically, the aggressiveness of petro-revolutionary states shapes global oil markets and international economic relations. The argument is tested using statistical analysis of international conflicts and economic sanctions. The policy implications are then considered, focusing on the negative global impacts of dependence on oil consumption. - Research highlights: {yields} A radical reconsideration of the link between oil and international conflict is needed. {yields} Resource-backed aggression, not resource-competition, is the major source of conflict. {yields} Petro-revolutionary states instigate 250% more military conflicts than typical states. {yields} Petro-revolutionary states are also more frequently targeted for economic sanctions.

  10. Dynamic adaption of vascular morphology

    DEFF Research Database (Denmark)

    Okkels, Fridolin; Jacobsen, Jens Christian Brings

    2012-01-01

    The structure of vascular networks adapts continuously to meet changes in demand of the surrounding tissue. Most of the known vascular adaptation mechanisms are based on local reactions to local stimuli such as pressure and flow, which in turn reflects influence from the surrounding tissue. Here ...

  11. Data Mining for Anomaly Detection

    Science.gov (United States)

    Biswas, Gautam; Mack, Daniel; Mylaraswamy, Dinkar; Bharadwaj, Raj

    2013-01-01

    The Vehicle Integrated Prognostics Reasoner (VIPR) program describes methods for enhanced diagnostics as well as a prognostic extension to current state of art Aircraft Diagnostic and Maintenance System (ADMS). VIPR introduced a new anomaly detection function for discovering previously undetected and undocumented situations, where there are clear deviations from nominal behavior. Once a baseline (nominal model of operations) is established, the detection and analysis is split between on-aircraft outlier generation and off-aircraft expert analysis to characterize and classify events that may not have been anticipated by individual system providers. Offline expert analysis is supported by data curation and data mining algorithms that can be applied in the contexts of supervised learning methods and unsupervised learning. In this report, we discuss efficient methods to implement the Kolmogorov complexity measure using compression algorithms, and run a systematic empirical analysis to determine the best compression measure. Our experiments established that the combination of the DZIP compression algorithm and CiDM distance measure provides the best results for capturing relevant properties of time series data encountered in aircraft operations. This combination was used as the basis for developing an unsupervised learning algorithm to define "nominal" flight segments using historical flight segments.

  12. Holography and Conformal Anomaly Matching

    CERN Document Server

    Cabo-Bizet, Alejandro; Narain, K S

    2013-01-01

    We discuss various issues related to the understanding of the conformal anomaly matching in CFT from the dual holographic viewpoint. First, we act with a PBH diffeomorphism on a generic 5D RG flow geometry and show that the corresponding on-shell bulk action reproduces the Wess-Zumino term for the dilaton of broken conformal symmetry, with the expected coefficient aUV-aIR. Then we consider a specific 3D example of RG flow whose UV asymptotics is normalizable and admits a 6D lifting. We promote a modulus \\rho appearing in the geometry to a function of boundary coordinates. In a 6D description {\\rho} is the scale of an SU(2) instanton. We determine the smooth deformed background up to second order in the space-time derivatives of \\rho and find that the 3D on-shell action reproduces a boundary kinetic term for the massless field \\tau= log(\\rho) with the correct coefficient \\delta c=cUV-cIR. We further analyze the linearized fluctuations around the deformed background geometry and compute the one-point functions ...

  13. Collie Eye Anomaly in Switzerland.

    Science.gov (United States)

    Walser-Reinhardt, L; Hässig, M; Spiess, B

    2009-12-01

    In this retrospective study, the results of 3'527 eye examinations in 6 different breeds affected with Collie Eye Anomaly (CEA) over a period of 8 years (1999 - 2007) are described. CEA was divided into three main ophthalmoscopic features, a) choroidal hypoplasia (CRH), b) CRH and coloboma and c) coloboma alone. Of the 101 Smooth Collies 8.9 % showed signs of CRH, whereas 36.9 % of Rough Collies were affected with CRH, 2.8 % with CRH and coloboma and 0.38 % with coloboma alone. Choroidal hypoplasia was present in 13.1 %, CRH and coloboma in 1.8 % and coloboma alone in 0.2 % of the Shetland Sheepdogs. Only one Australian Shepherd dog had CRH, while 0.7 % of the Border Collies were affected with CRH. None of the Nova Scotia Duck Tolling Retrievers were affected with CEA. There were no statistically significant differences in the occurrence of CEA between males and females, nor was there any relation between coat colors. Significant differences could be shown between dogs younger or older than 8 weeks at first examination. CEA was more often diagnosed in dogs younger than 8 weeks within the Rough Collie and Shetland Sheepdog. PMID:19946851

  14. Aggressive Marital Conflict, Maternal Harsh Punishment, and Child Aggressive-Disruptive Behavior: Evidence for Direct and Mediated Relations

    OpenAIRE

    Erath, Stephen A.; Bierman, Karen L.

    2006-01-01

    Direct associations between aggressive marital conflict and child aggressive-disruptive behavior at home and school were explored in this cross-sectional study of 360 kindergarten children. In addition, mediated pathways linking aggressive marital conflict to maternal harsh punishment to child aggressive-disruptive behavior were examined. Moderation analyses explored how the overall frequency of marital disagreement might buffer or exacerbate the impact of aggressive marital conflict on mater...

  15. Partner Aggression among Men and Women in Substance Use Disorder Treatment: Correlates of Psychological and Physical Aggression and Injury

    OpenAIRE

    Chermack, Stephen T.; Murray, Regan L.; Walton, Maureen A.; Booth, Brenda A; Wryobeck, John; Blow, Frederic C.

    2008-01-01

    This study examined intimate partner aggression in a sample of 489 participants enrolled in substance use disorder treatment, and expands on prior research by including measures of various forms of aggression, a mixed gender sample (76% men, 24% women), and measurement of several potential risk domains. Aggression measures included both participant-to-partner and partner-to-participant psychological aggression, physical aggression and injury. Analyses focused on the role of distal and proxima...

  16. Detection of airway anomalies in pediatric patients with cardiovascular anomalies with low dose prospective ECG-gated dual-source CT.

    Directory of Open Access Journals (Sweden)

    Hui Jiao

    , ECG-triggered CT to evaluate congenital cardiovascular anomalies can also be used to diagnose and characterize fixed airway involvement in relation to the vascular structures.

  17. Hamiltonian Anomalies from Extended Field Theories

    Science.gov (United States)

    Monnier, Samuel

    2015-09-01

    We develop a proposal by Freed to see anomalous field theories as relative field theories, namely field theories taking value in a field theory in one dimension higher, the anomaly field theory. We show that when the anomaly field theory is extended down to codimension 2, familiar facts about Hamiltonian anomalies can be naturally recovered, such as the fact that the anomalous symmetry group admits only a projective representation on the Hilbert space, or that the latter is really an abelian bundle gerbe over the moduli space. We include in the discussion the case of non-invertible anomaly field theories, which is relevant to six-dimensional (2, 0) superconformal theories. In this case, we show that the Hamiltonian anomaly is characterized by a degree 2 non-abelian group cohomology class, associated to the non-abelian gerbe playing the role of the state space of the anomalous theory. We construct Dai-Freed theories, governing the anomalies of chiral fermionic theories, and Wess-Zumino theories, governing the anomalies of Wess-Zumino terms and self-dual field theories, as extended field theories down to codimension 2.

  18. Galilean Anomalies and Their Effect on Hydrodynamics

    CERN Document Server

    Jain, Akash

    2015-01-01

    We extend the null background construction of [arXiv:1505.05677,arXiv:1509.04718] to include torsion and a conserved spin current, and use it to study gauge and gravitational anomalies in Galilean theories coupled to torsional Newton-Cartan backgrounds. We establish that the relativistic anomaly inflow mechanism with an appropriately modified anomaly polynomial, can be used to generate these anomalies. Similar to relativistic case, we find that Galilean anomalies also survive only in even dimensions. Further, these anomalies only effect the gauge and rotational symmetries of a Galilean theory; in particular the Milne boost symmetry remains non-anomalous. We also extend the transgression machinery used in relativistic fluids to fluids on null backgrounds, and use it to determine how these anomalies affect the constitutive relations of a Galilean fluid. Unrelated to Galilean fluids, we propose an analogue of the off-shell second law of thermodynamics for relativistic fluids introduced by [arXiv:1106.0277], to i...

  19. Common and uncommon vascular rings and slings: a multi-modality review

    International Nuclear Information System (INIS)

    Vascular rings and pulmonary slings are congenital anomalies of the aortic arch/great vessels and pulmonary arteries, respectively, that commonly present early during infancy and childhood with respiratory and/or feeding difficulties. The diagnosis of these conditions frequently utilizes a multi-modality radiological approach, commonly utilizing some combination of radiography, esophagography, CT angiography and MR angiography. The purpose of this pictorial review is to illustrate the radiological findings of common and uncommon vascular rings and pulmonary slings in children using a state-of-the-art multi-modality imaging approach. (orig.)

  20. Common and uncommon vascular rings and slings: a multi-modality review

    Energy Technology Data Exchange (ETDEWEB)

    Dillman, Jonathan R.; Agarwal, Prachi P.; Hernandez, Ramiro J.; Strouse, Peter J. [University of Michigan Health System, C.S. Mott Children' s Hospital, Department of Radiology, Section of Pediatric Radiology, Ann Arbor, MI (United States); Attili, Anil K. [University of Kentucky College of Medicine, Department of Radiology, Lexington, KY (United States); Dorfman, Adam L. [University of Michigan Health System, C.S. Mott Children' s Hospital, Department of Radiology, Section of Pediatric Radiology, Ann Arbor, MI (United States); University of Michigan Health System, C.S. Mott Children' s Hospital, Department of Pediatrics and Communicable Diseases, Division of Pediatric Cardiology, Ann Arbor, MI (United States)

    2011-11-15

    Vascular rings and pulmonary slings are congenital anomalies of the aortic arch/great vessels and pulmonary arteries, respectively, that commonly present early during infancy and childhood with respiratory and/or feeding difficulties. The diagnosis of these conditions frequently utilizes a multi-modality radiological approach, commonly utilizing some combination of radiography, esophagography, CT angiography and MR angiography. The purpose of this pictorial review is to illustrate the radiological findings of common and uncommon vascular rings and pulmonary slings in children using a state-of-the-art multi-modality imaging approach. (orig.)

  1. Medea: Aggression im Dienste weiblicher Subjektivierung

    Directory of Open Access Journals (Sweden)

    Monika Gsell

    2003-11-01

    Full Text Available Aggression wurde in der Geschlechterforschung bisher meist nicht nur unter negativen Vorzeichen – nämlich als zerstörerische und fehlgeleitete Kraft – thematisiert und mit Gewalt in eins gesetzt, sondern darüberhinaus fast ausschließlich mit Männlichkeit konnotiert. Nur langsam setzt sich demgegenüber die Einsicht durch, dass Aggression zunächst einmal eine grundsätzlich positive Kraft ist, derer es zur Subjektivierung und Erlangung von Selbstbestimmung bedarf. Damit scheint nun auch eine fruchtbare Auseinandersetzung mit Weiblichkeit und Aggression möglich geworden zu sein. Ein lehrreicher Beitrag dazu ist Roxana Hidalgos Medea-Studie, gerade weil sie die eigentlich heiklen Fragen weder stellt noch beantwortet.

  2. Genetic and immunological features of aggressive periodontitis

    Directory of Open Access Journals (Sweden)

    Miguel Angel MUÑOZ

    2010-03-01

    Full Text Available clinicians and researchers due to its rapid progression and its evidences of genetic character. Different theories have tried to explain the individual differences in susceptibility, where genetic and immunological assays have assumed great importance. The purpose of this study was to review the literature in order to comprehend the genetic and immunological features of aggressive periodontitis. Literature review: Articles were examined, specifically the ones dealing with information regarding genetic and/or immunological studies of individuals related to their disease susceptibility. Conclusions: In the presence of dental biofilm, host susceptibility to aggressive periodontitis varies among regions, countries and races. Immune-inflammatory processes that seem to be modified in aggressive periodontitis patients may be transmitted vertically, explaining familial aggregation associated with this disease.

  3. Behavioral aggressiveness in boys with sexual precocity

    Directory of Open Access Journals (Sweden)

    Bindu Kulshreshtha

    2012-01-01

    Full Text Available Background: Some boys with sexual precocity are known to have behavioral problems like increased physical and verbal aggression and school and social maladjustments. It is believed to be due to premature androgen exposure. However, it is not clear why only some develop this problem, difference in etiology could be one explanation. Aim: The aim of the study is to assess behavioral aggression in boys with sexual precocity due to different disorders. Materials and Methods: Seven children, ages three to seven years, were enrolled for this study. Two were diagnosed to have congenital adrenal hyperplasia (CAH, three had testotoxicosis, while two had central precocious puberty. Parents of children with precocious puberty underwent the (CASP questionnaire (children′s aggression scale-parent version. Results: Testosterone levels were high in all patients. Parents denied any history of physical or verbal aggression in the two boys with CAH. Their CASP rating was 0. In contrast, the CASP ratings in the two boys with testotoxicosis and the two with precocious puberty for five domains ranged from 3.1 - 24.2, 2.6 - 8.3,1-5.6,0 - 7.1, and 0 - 1, respectively. In the present study, increased aggression was seen among all the patients with testotoxicosis and both with precocious puberty. In contrast, there were no symptoms of either increased verbal or physical aggression in either of the two patients with CAH. Conclusions: The hormonal milieu in the boys with CAH versus those with sexual precocity due to other causes differed in terms of cortisol and androgen precursors. The androgen excess in CAH children was a consequence of cortisol deficiency. It is possible that cortisol sufficiency is required for androgen-mediated behavioral effects.

  4. Gravitational anomalies in higher dimensional Riemann-Cartan space

    International Nuclear Information System (INIS)

    By applying the covariant Taylor expansion method of the heat kernel, the covariant Einstein anomalies associated with a Weyl fermion of spin 1/2 in four-, six- and eight-dimensional Riemann-Cartan space are manifestly given. Many unknown terms with torsion tensors appear in these anomalies. The Lorentz anomaly is intimately related to the Einstein anomaly even in Riemann-Cartan space. The explicit form of the Lorentz anomaly corresponding to the Einstein anomaly is also obtained

  5. Considerations in the Interpretation of Cosmological Anomalies

    CERN Document Server

    Peiris, Hiranya V

    2014-01-01

    Anomalies drive scientific discovery -- they are associated with the cutting edge of the research frontier, and thus typically exploit data in the low signal-to-noise regime. In astronomy, the prevalence of systematics --- both "known unknowns" and "unknown unknowns" --- combined with increasingly large datasets, the widespread use of ad hoc estimators for anomaly detection, and the "look-elsewhere" effect, can lead to spurious false detections. In this informal note, I argue that anomaly detection leading to discoveries of new physics requires a combination of physical understanding, careful experimental design to avoid confirmation bias, and self-consistent statistical methods. These points are illustrated with several concrete examples from cosmology.

  6. Hybrid anomaly-gravity mediation with flavor

    International Nuclear Information System (INIS)

    We study models with contributions of similar size to the soft masses from anomaly-and gravity mediation, thereby curing the tachyonic slepton problem of anomaly mediation. A possible origin of this hybrid setup in a 5-dimensional brane world is briefly discussed. The absence of excessive flavor violation is explained by alignment. The gravitino can be heavy enough so that the gravitino problem of supersymmetric theories with leptogenesis is avoided. The model has a characteristic signature: It predicts the distinctive gaugino mass pattern of anomaly mediation and, at the same time, O(1) slepton mass splittings.

  7. Connections between Schwinger terms and anomalies

    International Nuclear Information System (INIS)

    We present examples of a new type of Schwinger terms appearing in commutators of energy-momentum tensor. We demonstrate them in two-dimensional flat Minkowski space. The Schwinger terms which correspond to gravitational anomaly appear in different places from those of conformal anomaly. Nevertheless, they still preserve the Jacobi identity. We also discuss the relation between anomalies and the Schwinger terms. In any-dimensional curved space-time Faddeev's cohomological technique works well. Therefore we can derive the Schwinger terms in curved space-time. (author)

  8. Fetal renal anomalies : diagnosis, management, and outcome

    OpenAIRE

    Damen-Elias, Henrica Antonia Maria

    2004-01-01

    In two to three percent of fetuses structural anomalies can be found with prenatal ultrasound investigation. Anomalies of the urinary tract account for 15 to 20% of these anomalies with a detection rate of approximately of 90%. In Chapter 2, 3 and 4 we present reference curves for size and growth of fetal kidney, renal pelvis and adrenal gland, preceded by an intra- and interobserver variation analysis. In Chapter 5 we describe the ultrasound findings and outcome of a large cohort of 402 fetu...

  9. On SU(2) anomaly and Majorana fermions

    CERN Document Server

    Patrascu, Andrei

    2015-01-01

    In this paper a loophole in the SU(2) gauge anomaly is presented. It is shown that using several topological tools a theory can be designed that implements the quantization of a single Weyl doublet anomaly free while keeping the non-abelian character of the particle in the theory. This opens the perspective for non-Abelian statistics of deconfined particle like objects in 3+1 dimensions and for applications in Quantum Computing. Moreover, if this loophole cannot be closed, old arguments related to anomaly cancelations must be reviewed.

  10. Crustal structure interpreted from magnetic anomalies

    Science.gov (United States)

    Phillips, Jeffrey D.; Reynolds, Richard L.; Frey, Herbert

    1991-01-01

    This review, discusses publications during the last quadrennium (1987-1990) that used aeromagnetic data, marine magnetic data, satellite magnetic data, and rock magnetic and petrologic data to provide information on the sources of magnetic anomalies. The publications reviewed reflect increased integration of rock magnetic property and petrologic studies with magnetic anomaly interpretation studies, particularly in deep crustal magnetization, exploration for hydrocarbons, and inversion of marine magnetic anomalies. Interpretations of aeromagnetic data featuring image display techniques and using the horizontal gradient method for locating magnetization boundaries became standard.

  11. MULLERIAN DUCT ANOMALY: A CASE REPORT

    Directory of Open Access Journals (Sweden)

    Sunny

    2014-11-01

    Full Text Available The frequency of mullerian duct anomalies vary widely owing to different patient populations, non-standardized classification systems, and differences in diagnostic data acquisition, these anomalies are clinically important, particularly in women who present with infertility. Many of the anomalies are initially diagnosed at hysterosalpingography and ultrasonography; however, further imaging is often required for definitive diagnosis and elaboration of secondary findings. At this time, magnetic resonance imaging is the study of choice because of its high accuracy and detailed elaboration of uterovaginal anatomy. Here, we report a case of 30 years old female who presented to emergency department with bad obstetric history.

  12. Imaging Spectrum of Hemangioma and Vascular Malformations of the Head and Neck in Children and Adolescents

    Directory of Open Access Journals (Sweden)

    Venkatraman Bhat

    2014-01-01

    Full Text Available Vascular lesions of the head and neck region in children constitute an interesting group of lesions that benefit immensely from imaging techniques. Imaging is essential for identification, characterization, and delineation of the extent of lesion and subsequent follow-up. Infantile hemangiomas, which are vascular tumors with a specific evolution pattern, constitute a large majority of these lesions. On the other hand, there are vascular malformations, which are anomalies of the vascular system, consisting of a range of vascular tissues associated with various flow patterns. When diagnosis is clinically evident, imaging should utilize non-radiation techniques and address the issues necessary for management. Timing and interpretation of imaging methods employed in assessing childhood vascular lesion should also take into consideration the natural history so that imaging is performed to address a specific question. This review highlights the typical appearance of a hemangioma and a group of vascular malformations of the head and neck. For descriptive purpose, an attempt has been made to group lesions into specific subsites, with each one having specific clinical significance. Cases included illustrate the spectrum of the disease ranging from classical form in young children to slightly differing manifestations of the disease in adolescents and adults. The illustrations also provide a novel way of presenting image data using volume-rendering techniques of 3D data. Multi-modality team interaction and management strategies of these complex lesions are also emphasized.

  13. Boys’ and Girls’ Relational and Physical Aggression in Nine Countries.

    Science.gov (United States)

    Lansford, Jennifer E; Skinner, Ann T; Sorbring, Emma; Di Giunta, Laura; Deater-Deckard, Kirby; Dodge, Kenneth A; Malone, Patrick S; Oburu, Paul; Pastorelli, Concetta; Tapanya, Sombat; Tirado, Liliana Maria Uribe; Zelli, Arnaldo; Al-Hassan, Suha M; Alampay, Liane Peña; Bacchini, Dario; Bombi, Anna Silvia; Bornstein, Marc H; Chang, Lei

    2012-01-01

    Distinguishing between relational and physical aggression has become a key feature of many developmental studies in North America and Western Europe, but very little information is available on relational and physical aggression in more diverse cultural contexts. This study examined the factor structure of, associations between, and gender differences in relational and physical aggression in China, Colombia, Italy, Jordan, Kenya, the Philippines, Sweden, Thailand, and the United States. Children ages 7–10 years (N = 1,410) reported on their relationally and physically aggressive behavior. Relational and physical aggression shared a common factor structure across countries. In all nine countries, relational and physical aggression were significantly correlated (average r = .49). Countries differed in the mean levels of both relational and physical aggression that children reported using and with respect to whether children reported using more physical than relational aggression or more relational than physical aggression. Boys reported being more physically aggressive than girls across all nine countries; no consistent gender differences emerged in relational aggression. Despite mean-level differences in relational and physical aggression across countries, the findings provided support for cross-country similarities in associations between relational and physical aggression as well as links between gender and aggression. PMID:23935227

  14. Aggressive Recurrence of Primary Hepatic Epithelioid Haemangioendothelioma after Liver Transplantation

    Directory of Open Access Journals (Sweden)

    Qusay A. Abdoh

    2016-01-01

    Full Text Available HEHE is a rare neoplasm of vascular origin that occurs in the liver; UNOS reported a favorable outcome after liver transplantation in 110 patients with 1-year and 5-year survival of 80% and 64%. Case Report. A 40-year-old lady presented with a three-month history of right upper abdominal pain with nausea, vomiting, and significant loss of weight associated with scleral icterus and progressive abdominal distension. Examination revealed jaundice, hepatomegaly, and ascites. Serum bilirubin was 26.5 mg/dL and ALP was 552 CT. Abdomen and pelvis showed diffuse infiltrative neoplastic process of the liver with a mass effect and stretching of the hepatic and portal veins, in addition to bile duct dilatation. Viral hepatitis markers were negative and serum alpha fetoprotein was within reference range. Liver biopsy was consistent with HEHE, with positive endothelial markers (CD31, CD34, and factor VIII-related antigen. She underwent living related liver transplantation on June 2013 and was discharged after 20 days with normal liver enzymes. Four months later, she presented with diffuse disease recurrence. Liver biopsy confirmed disease recurrence; she received supportive treatment and unfortunately she died 2 weeks later. Conclusion. HEHE can have rapid and aggressive recurrence after liver transplantation.

  15. Friendship and Aggression in Elementary School. The friendships of aggressive children and the effects of having aggressive friends

    NARCIS (Netherlands)

    Palmen, J.M.H.

    2009-01-01

    Research has demonstrated the importance of friendship for children’s adjustment (e.g., Ladd, 1990). However, some children may be less capable of maintaining satisfying relationships with their peers. Aggressive children have been found to experience peer relation difficulties (e.g., Dodge, Coie, P

  16. Unusual Congenital Aortic Anomaly with Rare Common Celiamesenteric Trunk Variation: MR Angiography and Digital Substraction Angiography Findings

    International Nuclear Information System (INIS)

    Magnetic resonance angiography and digital substraction angiography (DSA) findings in a case with a rare congenital thoracoabdominal aortic hypoplasia and common celiamesenteric trunk variation with occlusion of infrarenal abdominal aorta are described here. To our knowledge, this aortic anomaly has not been previously described in the English literature. DSA is the optimum imaging modality for determination of aortic hypoplasia, associated vascular malformations, collateral vessels, and direction of flow within vessels

  17. Comparison of microscopic vascularity in benign and malignant prostate tissue.

    Science.gov (United States)

    Bigler, S A; Deering, R E; Brawer, M K

    1993-02-01

    A variety of malignant neoplasms have been shown to induce capillary neovascularization, and in some cases the degree of vascularization appears to correlate with aggressive behavior and risk of metastasis. We hypothesized that carcinoma of the prostate also induces the formation of new capillaries, and we developed a method to quantify the relative density of microscopic vessels in carcinoma of the prostate compared with benign prostatic glandular tissue. The number of microvessel profiles in tissue sections was quantified by marking the vascular endothelial cells with antibodies to factor VIII-related antigen using standard immunohistochemistry techniques and comparing fields of adenocarcinoma with benign glandular tissue in 15 radical prostatectomy specimens. The analysis was facilitated by using the Optimas computerized image analysis system (Bioscan, Seattle, WA) with software written for this investigation. Fourteen of the 15 cases demonstrated significantly higher vascular density in the areas of carcinoma than in the benign tissues. Overall, the ratio of vessels per unit area in sections of carcinoma versus benign tissue was approximately double (ratio = 2.02; P < .001). In benign tissues the capillaries are restricted for the most part to the periglandular stroma immediately adjacent to the epithelium, whereas the distribution in carcinoma appears to be more random. The data demonstrate the increased density of capillaries in prostatic carcinoma when compared with benign prostate tissue. PMID:8432518

  18. Situation determinanty of display of aggression in sporting activity

    Directory of Open Access Journals (Sweden)

    Maystruk V.V.

    2010-02-01

    Full Text Available Situation pre-conditions of development of aggression are considered. Aggression within the limits of rules of competitions is the important element of successful activity of sportsman. Aspiring to victory requires a sporting aggressiveness. Sport is a comfortable model for the scientific experimental study of the phenomenon of aggression. Existing is studied типологии of aggressiveness in sporting activity. A reactive and instrumental aggressiveness is selected. Primary objective of first consists in causing of physical or psychological trauma. A friend is pursued by a purpose is a receipt of victory and not causing of harm to the competitor.

  19. Road Users' Risky Behavior: Analysis Focusing on Aggressiveness

    Directory of Open Access Journals (Sweden)

    Alica Kalašová

    2011-01-01

    Full Text Available With transport and traffic developing permanently, we can meet more and more aggressive drivers on roads. We can see various kinds of aggressiveness and aggressive behavior that can lead to dangerous situations which can threaten one's health or even life. The problem of aggressive driving on the roads is becoming more current. Speeding, inappropriate gestures, and nonobservance of safe distance, are only a fraction of the aggressive behavior of many drivers that need to be solved in the road traffic. At present, the problem of aggressive driver behavior in Slovakia is not resolved yet.

  20. Deconstruction and reconstruction of an anomaly

    Czech Academy of Sciences Publication Activity Database

    Engelmann, Dirk; Strobel, M.

    2012-01-01

    Roč. 76, č. 2 (2012), s. 678-689. ISSN 0899-8256 Institutional support: RVO:67985998 Keywords : anomalies * false consensus * information processing Subject RIV: AH - Economics Impact factor: 1.000, year: 2012

  1. Comparison of Unsupervised Anomaly Detection Methods

    Data.gov (United States)

    National Aeronautics and Space Administration — Several different unsupervised anomaly detection algorithms have been applied to Space Shuttle Main Engine (SSME) data to serve the purpose of developing a...

  2. The Pioneer anomaly and the holographic scenario

    OpenAIRE

    Giné, Jaume

    2011-01-01

    In this paper we discuss the recently obtained relation between the Verlinde's holographic model and the first phenomenological Modified Newtonian dynamics. This gives also a promising possible explanation to the Pioneer anomaly.

  3. Design and Implementation of an Anomaly Detector

    Energy Technology Data Exchange (ETDEWEB)

    Bagherjeiran, A; Cantu-Paz, E; Kamath, C

    2005-07-11

    This paper describes the design and implementation of a general-purpose anomaly detector for streaming data. Based on a survey of similar work from the literature, a basic anomaly detector builds a model on normal data, compares this model to incoming data, and uses a threshold to determine when the incoming data represent an anomaly. Models compactly represent the data but still allow for effective comparison. Comparison methods determine the distance between two models of data or the distance between a model and a point. Threshold selection is a largely neglected problem in the literature, but the current implementation includes two methods to estimate thresholds from normal data. With these components, a user can construct a variety of anomaly detection schemes. The implementation contains several methods from the literature. Three separate experiments tested the performance of the components on two well-known and one completely artificial dataset. The results indicate that the implementation works and can reproduce results from previous experiments.

  4. Poland anomaly with contralateral ulnar ray defect.

    OpenAIRE

    Powell, C V; Coombs, R C; David, T J

    1993-01-01

    We report an atypical case of the Poland anomaly. Unreported features are that the hand abnormality is on the contralateral side to the chest wall defect, there is an ulnar ray predominance, and lack of syndactyly.

  5. Coral Reef Watch, Temperature Anomaly, 50 km

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Coral Reef Watch distributes SST anomaly data using a combination of the POES AVHRR Global Area Coverage data, and data from a climatological database. AVHRR...

  6. Method of Mapping Anomalies in Homogenous Material

    Science.gov (United States)

    Woodard, Stanley E. (Inventor); Taylor, Bryant D. (Inventor)

    2016-01-01

    An electrical conductor and antenna are positioned in a fixed relationship to one another. Relative lateral movement is generated between the electrical conductor and a homogenous material while maintaining the electrical conductor at a fixed distance from the homogenous material. The antenna supplies a time-varying magnetic field that causes the electrical conductor to resonate and generate harmonic electric and magnetic field responses. Disruptions in at least one of the electric and magnetic field responses during this lateral movement are indicative of a lateral location of a subsurface anomaly. Next, relative out-of-plane movement is generated between the electrical conductor and the homogenous material in the vicinity of the anomaly's lateral location. Disruptions in at least one of the electric and magnetic field responses during this out-of-plane movement are indicative of a depth location of the subsurface anomaly. A recording of the disruptions provides a mapping of the anomaly.

  7. SEG US Bouguer Gravity Anomaly Grid

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The SEG gravity data are the product of the ad hoc Gravity Anomaly Map (GAM) Committee, sponsored by the Society of Exploration Geophysicists (SEG) and the U.S....

  8. Anomaly Detection in Transactional Sequential Data

    Directory of Open Access Journals (Sweden)

    Huibing Zhang

    2012-01-01

    Full Text Available A transactional system often has a steady distribution based on their decisions or responses on various transactions. If the system is changed, the distribution also often changes. It is a valuable work to detect anomaly caused by system changes based on different distributions. In this study, we modeled those decision or response signals into a series of time-related distributions and then proposed a method combining distance metrics and anomaly detection to discover whether changes have happened in some systems. Distance metrics on different distributions can decide whether changes have happened and anomaly detection can find what happened further. Extensive experiments show that our method has a good performance and can locate the anomaly accurately.

  9. Seasonal Anomalies in Istanbul Stock Exchange

    Directory of Open Access Journals (Sweden)

    Zehra Abdioglu

    Full Text Available According to efficient market hypothesis, investors perceive all available information in the same manner and it is not possible that any investor obtain more profit than others. Various anomalies in stock markets cause the failure of the efficient market hypothesis. Anomalies mean that the returns of the stock market are different on each the time period. The existence of anomalies in stock markets is important for investors. In this study, it is examined to whether there are seasonal anomalies in Istanbul Stock Exchange. For this purpose, it is tested intra-day effect, day of the week effect, the January effect, intra-month effect, turn of the month effect, turn of the year effect and the holiday effect for the period of 2003-2012, using least squares method. According to results, there is an evidence for intra-day effect and day of the week effect in Istanbul Stock Exchange for this period.

  10. Reduction of satellite magnetic anomaly data

    Science.gov (United States)

    Slud, E. V.; Smith, P. J.; Langel, R. A.

    1984-01-01

    Analysis of global magnetic anomaly maps derived from satellite data is facilitated by inversion to the equivalent magnetization in a constant thickness magnetic crust or, equivalently, by reduction to the pole. Previous inversions have proven unstable near the geomagnetic equator. The instability results from magnetic moment distributions which are admissible in the inversion solution but which make only small contribution to the computed values of anomaly field. Their admissibility in the solution could result from noisy or incomplete data or from small poorly resolved anomalies. The resulting magnetic moments are unrealistically large and oscillatory. Application of the method of principal components (e.g. eigenvalue decomposition and selective elimination of less significant eigenvectors) is proposed as a way of overcoming the instability and the method is demonstrated by applying it to the region around the Bangui anomaly in Central Africa.

  11. Understanding Magnetic Anomalies and Their Significance.

    Science.gov (United States)

    Shea, James H.

    1988-01-01

    Describes a laboratory exercise testing the Vine-Matthews-Morley hypothesis of plate tectonics. Includes 14 questions with explanations using graphs and charts. Provides a historical account of the current plate tectonic and magnetic anomaly theory. (MVL)

  12. US Aeromagnetic and Satellite Magnetic Anomaly Comparisons

    Science.gov (United States)

    Vonfrese, R. R. B.; Hinze, W. J.; Braile, L. W. (Principal Investigator); Sexton, J. L.

    1984-01-01

    Scalar aeromagnetic data obtained by the U.S. Naval Oceanographic Office (NOO) Vector Magnetic Survey of the conterminous U.S. were screened for periods of intense diurnal magnetic activity and reduced to anomaly form, filtered, and continued upward. A number of correlations between the NOO, POGO and preliminary MAGSAT data are evident at satellite elevations, including a prominent transcontinental magnetic high which extends from the Anadarko Basin to the Cincinnati Arch. The transcontinental magnetic high is breached by negative anomalies located over the Rio Grande Rift and Mississippi River Aulacogen. Differentially reduced-to-pole NOO and POGO magnetic anomaly data show that the transcontinental magnetic high corresponds to a well-defined regional trend of negative free-air gravity and enhanced crustal thickness anomalies.

  13. Major congenital anomalies in a Danish region

    DEFF Research Database (Denmark)

    Garne, Ester; Hansen, Anne Vinkel; Birkelund, Anne Sofie; Andersen, Anne Marie Nybo

    2014-01-01

    registry covers live births, foetal deaths with a gestational age (GA) of 20 weeks or more, and terminations of pregnancy due to congenital anomalies (TOPFA). RESULTS: The overall prevalence of congenital anomalies was 2.70% (95% confidence interval: 2.58-2.80). The majority of cases had an isolated......INTRODUCTION: This study describes the prevalence of congenital anomalies and changes over time in birth outcome, mortality and chronic maternal diseases. MATERIAL AND METHODS: This study was based on population data from the EUROCAT registry covering the Funen County, Denmark, 1995-2008. The......: diabetes, epilepsy, mental disorder, thyroid disease, asthma, or inflammatory bowel disease. Medication for these conditions accounted for 46% of maternal drug use. CONCLUSION: Maternal morbidity and use of potentially teratogenic medication have increased among congenital anomaly cases. Foetal and infant...

  14. Mexico Terrain Corrected Free Air Anomalies (97)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This 2' gravity anomaly grid for Mexico, North-Central America and the Western Caribbean Sea is NOT the input data set used in the development of the MEXICO97...

  15. The effect of television-mediated aggression and real-life aggression on the behavior of Lebanese children.

    Science.gov (United States)

    Day, R C; Ghandour, M

    1984-08-01

    This study investigated the effect of television-mediated aggression and real-life aggression on the behavior of Lebanese children. The sample consisted of 48 boys and 48 girls of Lebanese origin who were students in an elementary school in Beirut, Lebanon. After controlling for pre-experimental aggression, the subjects were randomly assigned to one of the following treatment conditions: human-film aggression, cartoon-film aggression, neutral film, or real-life (act of war) aggression. The results indicated that boys as a group were more aggressive than girls and exhibited more imitative aggression after viewing both violent film and real-life violence. Girls were not more violent after viewing filmed aggression but were affected by the real-life violence. Comparisons of Bandura's work within the Lebanese culture are made. PMID:6470621

  16. Conformal anomaly around the sudden singularity

    OpenAIRE

    Houndjo, M. J. S.

    2010-01-01

    Quantum effects due to particle creation on a classical sudden singularity have been investigated in a previous work. The conclusion was that quantum effects do not lead to the avoidance nor the modification of the sudden future singularity. In this paper, we investigate quantum corrections coming from conformal anomaly near the sudden future singularity. We conclude that when the equation of state is chosen to be $p=-\\rho-A\\rho^\\alpha$, the conformal anomaly can transform the sudden singular...

  17. Derivation of Crustal Magnetic Anomalies from MAGSAT

    OpenAIRE

    YANAGISAWA, Masahisa

    1984-01-01

    This paper describes various characteristics of the magnetospheric field, induction field, and ionospheric field observed by MAGSAT (Magnetic Field Satellite) and the derivation of crustal magnetic anomalies free from disturbance fields. After eliminating the effect of the disturbance field, anomaly maps were derived for the Japanese area and for the Shatsky Rise area. The magnetic field observed by satellites consists of a core field, induction field, crustal field, ionospheric field, and ma...

  18. Gauge anomalies in Lorentz-violating QED

    CERN Document Server

    Santos, Tiago R S

    2016-01-01

    In this work we study the issue of gauge anomalies in Lorentz-violating QED. To do so, we opt to use the BRST formalism within of the algebraic renormalization approach, reducing our study to a cohomology problem. Since that this approach is independent of the renormalization scheme, the results here obtained are expected to be general. We find that the Lorentz-violating QED is free of gauge anomalies to all orders in perturbation theory.

  19. Anomaly Detection Using Metaheuristic Firefly Harmonic Clustering

    OpenAIRE

    Mario H. A. C. Adaniya; Taufik Abr˜ao; Mario Lemes Proenc¸a Jr.

    2013-01-01

    The performance of communication networks can be affected by a number of factors including misconfiguration, equipments outages, attacks originated from legitimate behavior or not, software errors, among many other causes. These factors may cause an unexpected change in the traffic behavior and create what we call anomalies that may represent a loss of performance or breach of network security. Knowing the behavior pattern of the network is essential to detect and characterize an anomaly. The...

  20. How to quantify structural anomalies in fluids?

    OpenAIRE

    Fomin, Yu. D.; Klumov, B. A.; Ryzhov, V.N.; Tsiok, E. N.

    2014-01-01

    Some fluids are known to behave anomalously. The so-called structural anomaly which means that the fluid becomes less structures under isothermal compression is among the most frequently discussed ones. Several methods for quantifying the degree of structural order are described in the literature and are used for calculating the regions of structural anomalies. It is implied that all of the structural order determinations yield qualitatively identical results. However, no explicit comparison ...