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https://www.readbyqxmd.com/read/29793081/geochemical-anomalies-of-trace-elements-in-unremediated-soils-of-mt-karcz%C3%A3-wka-a-historic-lead-mining-area-in-the-city-of-kielce-poland
#1
Agnieszka Gałuszka, Zdzisław M Migaszewski, Sabina Dołęgowska, Artur Michalik
Concentrations of selected trace elements (Ag, As, Ba, Cd, Co, Cr, Cu, Mn, Ni, Pb, Zn) and rare earth elements were determined in 61 samples of surface soils collected from Mt. Karczówka, a historic Pb ore mining area located in the city of Kielce, south-central Poland. Some of these samples were subjected to XRD analyses and Pb stable isotope measurements. The mineral and chemical composition of rock samples were also examined. Mining activity in the study area was conducted mostly during 15th-17th centuries using technologically primitive methods, and was finally ceased in the first half of the 19th century...
May 21, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29793015/right-atrial-anomalous-muscle-bundle-presenting-with-acute-superior-vena-cava-syndrome-and-pulmonary-embolism-surgical-management
#2
Jeko M Madjarov, Michael G Katz, Sophia Madjarova, Svetozar Madzharov, Frank R Arko, David W Miller, Francis Robicsek
BACKGROUND: An anomalous muscle bundle crossing the right atrial cavity represents a pathological finding with unproved clinical significance. This congenital anomaly may be difficult to recognize via echocardiography and could be confused with other intra-cavitary lesions. METHODS: We report a case of a 53-year-old female presented to the cardio-vascular service with acute superior vena cava syndrome and sub-massive pulmonary embolism. RESULTS: The patient underwent venography confirming superior vena cava stenosis...
May 21, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29791962/nerve-entrapment-syndromes-at-the-wrist-and-elbow-by-sonography
#3
Andrea S Klauser, Tommaso Buzzegoli, Mihra S Taljanovic, Sylvia Strobl, Stefan Rauch, James Teh, Julia Wanschitz, Wolfgang Löscher, Carlo Martinoli
Nerve entrapment syndromes of the upper extremity are associated with structural abnormalities or by an intrinsic abnormality of the nerve. Nerve entrapment syndromes generally have a typical clinical presentation, and findings on physical examination and in conjunction with electrodiagnostic studies imaging is used to evaluate the cause, severity, and etiology of the entrapment. With the development of high-frequency linear array transducers (12-24 MHz), ultrasound (US) is incomparable in terms of spatial resolution to depict morphological aspects and changes in nerves...
July 2018: Seminars in Musculoskeletal Radiology
https://www.readbyqxmd.com/read/29790534/evidence-for-the-natural-origins-of-anomalously-high-chromium-levels-in-soils-of-the-cecina-valley-italy
#4
Eliana Tassi, Martina Grifoni, Fabrizio Bardelli, Giuliana Aquilanti, Sonia La Felice, Antonella Iadecola, Pierfranco Lattanzi, Gianniantonio Petruzzelli
The problem of high levels of chromium is one of the most important issues in soils of the Mediterranean area, in particular those deriving from ophiolitic parent materials. Very often the chromium concentration is greater than the threshold values of legislation on soil pollution and the knowledge of the origin of contamination (natural or anthropogenic) is important to formulate risk characterization. This study evaluated the soils from three coastal areas of the Cecina Valley (Tuscany, Italy) to understand the origin of chromium in the soils, where high levels of hexavalent chromium were found in well and spring waters of the areas...
May 23, 2018: Environmental Science. Processes & Impacts
https://www.readbyqxmd.com/read/29789830/anomalous-strength-characteristics-of-stone-thrower-wales-defects-in-graphene-sheets-a-molecular-dynamics-study
#5
Aniyush Juneja, G Rajasekaran
Graphene, viz., the one-atom-thick sheet of carbon, exhibits outstanding mechanical properties, but defects, which are inevitable at the time of synthesis, may strongly affect these properties. In this study, the effects of two types of Stone-Thrower-Wales (namely, STW-1 and STW-2) defects on the mechanical properties of graphene sheets at different temperatures and strain rates were investigated on the basis of molecular dynamics simulations. The authors also investigated the effect of the strain rate and defect concentration on the failure morphology of STW-1 and STW-2 defected graphene sheets...
May 23, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29789392/fam35a-associates-with-rev7-and-modulates-dna-damage-responses-of-normal-and-brca1-defective-cells
#6
Junya Tomida, Kei-Ichi Takata, Sarita Bhetawal, Maria D Person, Hsueh-Ping Chao, Dean G Tang, Richard D Wood
To exploit vulnerabilities of tumors, it is urgent to identify associated defects in genome maintenance. One unsolved problem is the mechanism of regulation of DNA double-strand break repair by REV7 in complex with 53BP1 and RIF1, and its influence on repair pathway choice between homologous recombination and non-homologous end-joining. We searched for REV7-associated factors in human cells and found FAM35A, a previously unstudied protein with an unstructured N-terminal region and a C-terminal region harboring three OB-fold domains similar to single-stranded DNA-binding protein RPA, as novel interactor of REV7/RIF1/53BP1...
May 22, 2018: EMBO Journal
https://www.readbyqxmd.com/read/29788869/advances-in-the-tyrosinase-inhibitors-from-plant-source
#7
Marco Bonesi, Jianbo Xiao, Rosa Tundis, Francesca Aiello, Vincenzo Sicari, Monica R Loizzo
Tyrosinase is a multifunctional copper-containing oxidase which catalyses the oxidation of tyrosine to produce melanin. The alteration in melanin biosynthesis occurs in many diseases. The pigment has a protecting role against skin photo-carcinogenesis, but anomalous melanin pigmentation is an aesthetic problem in human beings. Moreover, the formation of neuromelanin in human brain could contribute to the neurodegeneration associated with Parkinson's disease. Finally, tyrosinase is also responsible of undesired browning in fruits and vegetables...
May 21, 2018: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/29788352/revisiting-the-low-birthweight-paradox-using-sibling-data-with-implications-for-the-classification-of-low-birthweight
#8
M Tabet, L H Flick, H Xian, J J Chang
Background: We examined the birthweight threshold for increased odds of neonatal death among second births based on their elder sibling's birthweight category. Methods: This population-based cohort study included 190 575 women who delivered their first two non-anomalous singleton live births in Missouri (1989-2005). We examined the birthweight distribution and neonatal mortality curves of second births whose elder sibling had low versus adequate/high birthweight...
May 19, 2018: Journal of Public Health
https://www.readbyqxmd.com/read/29786729/application-of-a-constant-hole-volume-sanchez-lacombe-equation-of-state-to-mixtures-relevant-to-polymeric-foaming
#9
Kier von Konigslow, Chul B Park, Russell B Thompson
A variant of the Sanchez-Lacombe equation of state is applied to several polymers, blowing agents, and saturated mixtures of interest to the polymer foaming industry. These are low-density polyethylene-carbon dioxide and polylactide-carbon dioxide saturated mixtures as well as polystyrene-carbon dioxide-dimethyl ether and polystyrene-carbon dioxide-nitrogen ternary saturated mixtures. Good agreement is achieved between theoretically predicted and experimentally determined solubilities, both for binary and ternary mixtures...
May 22, 2018: Soft Matter
https://www.readbyqxmd.com/read/29785348/pollution-of-the-sediments-of-the-coastal-zone-of-the-sambia-peninsula-and-the-curonian-spit-southeastern-baltic-sea
#10
Alexander Krek, Viktor Krechik, Aleksandr Danchenkov, Elena Krek
The detailed environmental survey of the coastal zone of the Kaliningrad Region northern coast was carried out. The pollutants distribution in the silty clay fraction and calculation of ecological indexes allowed the evaluation of distribution of potentially harmful elements (PHEs). The sources of pollution in the most intensively used areas were identified, and transit and accumulation zones were allocated. A large area of anomalous content of PHEs was revealed on the underwater coastal slope of the Curonian Spit National Park, which is situated far from the sources of pollution...
2018: PeerJ
https://www.readbyqxmd.com/read/29785211/a-very-rare-cause-of-lower-limb-ischemia-in-young-people-popliteal-artery-entrapment
#11
Hasan Baki Altinsoy, Ozkan Alatas, Emjed Khalil, Kenan Abdurrahman Kara, Candan Cudi Okten, Omer Faruk Dogan
Background: Popliteal artery entrapment syndrome (PAES) is a very rare pathology that can cause lower extremity ischemia in healthy young people. Anomalous anatomic relationships between the popliteal artery (PA) and the surrounding musculo-tendinous structures cause PAES. We present 31 patients with PAES in 35 limbs that were treated surgically in our clinic within a 12-year period. Patients and Methods: From 2001 to 2015, 31 patients (mean age: 32 ± 7.4 years) underwent surgery for PAES...
2018: Open Cardiovascular Medicine Journal
https://www.readbyqxmd.com/read/29781481/transverse-vibration-driven-large-uniaxial-negative-and-zero-thermal-expansion-in-boron-bridged-rept-3-b-framework-materials
#12
Sudipta Mondal, Chandan Mazumdar, R Ranganathan
In this work anomalous uniaxial thermal expansion behaviour at low temperatures along the c-direction of the tetragonal phase of different members of the antiperovskite REPt3B (RE = Sm, Gd-Tm) compounds is reported. Negative or zero thermal expansion (NTE/ZTE) behaviour in these compounds arises due to the transverse vibration of boron atoms in the linear Pt-B-Pt linkage. The coefficient of thermal expansion along the c-axis tends to become more negative in annealed compounds in comparison to those estimated for as-cast samples...
May 21, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29780727/bronchial-carcinoid-in-anomalous-right-upper-bronchus-a-patient-tailored-bronchoplasty-resection-technique
#13
Francesco Petrella, Alessio Vincenzo Mariolo, Juliana Guarize, Stefano Donghi, Lara Girelli, Stefania Rizzo, Lorenzo Spaggiari
Bronchial carcinoids (BC) are indolent neuroendocrine tumors (NET) that are classified as malignant because they can locally infiltrate and metastasize. Resection is the primary treatment for most localized carcinoid tumors, with lung parenchymal-sparing surgery the favoured objective for patients with central airway tumors. Sleeve bronchoplasty techniques are complex surgical procedures defined as parenchyma-saving because they allow a radical resection with tumor-free margins while preserving the maximum amount of parenchyma...
2018: Journal of Visualized Surgery
https://www.readbyqxmd.com/read/29780677/the-2016-southeastern-us-drought-an-extreme-departure-from-centennial-wetting-and-cooling
#14
A Park Williams, Benjamin I Cook, Jason E Smerdon, Daniel A Bishop, Richard Seager, Justin S Mankin
The fall 2016 drought in the southeastern United States (SE US) appeared exceptional based on its widespread impacts, but the current monitoring framework that only extends from 1979-present does not readily facilitate evaluation of soil-moisture anomalies in a centennial context. A new method to extend monthly gridded soil-moisture estimates back to 1895 is developed, indicating that since 1895, October-November 2016 soil moisture (0-200 cm) in the SE US was likely the second lowest on record, behind 1954...
October 27, 2017: Journal of Geophysical Research. Atmospheres: JGR
https://www.readbyqxmd.com/read/29780643/late-diagnosis-of-anomalous-aortic-origin-of-a-coronary-artery-from-the-inappropriate-sinus-of-valsalva-during-investigation-of-chest-pain
#15
Brunna Priscylla Américo Carvalho, Marcio Antônio Dos Santos, Wilson Pedro Guimarães Neto, Júlio César Queiroz De França, Márcio Rogério de Souza Braite, Rodrigo Bottura De Araújo, Isabella Gomes Carvalho, Moacir Fernandes de Godoy
In this work are reported two cases of anomalous aortic origin of a coronary artery (AAOCA), with the left main coronary artery (LMCA) arising at the right sinus of Valsalva in a 77-year-old woman and in a 79-year-old man submitted to angiography after positive ischemic tests. The origin of the LMCA or the left descendant artery (LDA) from the right sinus of Valsalva has a prevalence of 0.2%, the origin of the circumflex artery (CXA) from the right sinus 0.5%, and the origin of the right coronary artery (RCA) from the left sinus of Valsalva has a prevalence of 0...
2018: Case Reports in Cardiology
https://www.readbyqxmd.com/read/29780527/experimental-and-theoretical-evidence-of-a-supercritical-like-transition-in-an-organic-semiconductor-presenting-colossal-uniaxial-negative-thermal-expansion
#16
Arie van der Lee, Gilles H Roche, Guillaume Wantz, Joël J E Moreau, Olivier J Dautel, Jean-Sébastien Filhol
Thermal expansion coefficients of most materials are usually small, typically up to 50 parts per million per kelvin, and positive, i.e. materials expand when heated. Some materials show an atypical shrinking behavior in one or more crystallographic directions when heated. Here we show that a high mobility thiophene-based organic semiconductor, BHH-BTBT , has an exceptionally large negative expansion between 95 and 295 K (-216 < α 2 = α b < -333 MK-1 ), being compensated by an even larger positive expansion in the perpendicular direction (287 < α 1 < 634 MK-1 )...
April 28, 2018: Chemical Science
https://www.readbyqxmd.com/read/29780399/oxidative-stress-and-aberrant-programmed-cell-death-are-associated-with-pollen-abortion-in-isonuclear-alloplasmic-male-sterile-wheat
#17
Zihan Liu, Xiaoyi Shi, Sha Li, Lingli Zhang, Xiyue Song
Cytoplasmic male sterility is crucial for the utilization of hybrid heterosis and it possibly occurs in parallel with tapetal programmed cell death (PCD) and oxidative metabolism responses. However, little is known about the mechanisms that underlie pollen abortion in wheat. Therefore, we obtained two isonuclear alloplasmic male sterile lines (IAMSLs) with Aegilops kotschyi and Ae. juvenalis cytoplasm. Compared with the maintainer line, cytochemical analyses of the anthers demonstrated that the IAMSLs exhibited anomalous tapetal PCD and organelles, with premature PCD in K87B1-706A and delayed PCD in Ju87B1-706A...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29779503/percutaneous-pulmonary-valve-implantation-with-anomalous-left-anterior-descending-coronary-artery
#18
Dennis VanLoozen, Zahid Amin
Percutaneous pulmonary valve placement in patients with an anomalous coronary artery is rare and can be complicated by coronary artery compression. We report successful implantation of a percutaneous pulmonary valve in a patient with an anomalous left anterior descending artery.
May 21, 2018: Cardiology in the Young
https://www.readbyqxmd.com/read/29779315/-improving-outcomes-of-patients-with-heterotaxy-and-functional-single-ventricle-a-10-year-follow-up-of-70-cases-in-a-single-institution
#19
F Cao, M H Zou, L Ma, Y S Xia, S C Yang, W D Chen, G D Huang, X X Chen
Objective: To review current-era palliation outcomes of patients with heterotaxy and functional single ventricle in a single institution. Methods: The clinical data of 70 consecutive patients with heterotaxy undergoing multistage single ventricle palliation in Guangzhou Women and Children's Medical Center from January 2008 to December 2017 were retrospectively reviewed, and the prognosis factors for mortality were analyzed. There were 53 male and 17 female patients.The median age was 13.3 months (range: 6 days to 150 months)...
May 1, 2018: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/29777511/a-case-of-pancake-kidney-with-a-single-ureter-in-the-retroperitoneal-space
#20
Kasuga Horai, Munekazu Naito, Tomiko Yakura, Yuka Furuya, Yusuke Ohmichi, Mika Ohmichi, Takayoshi Miyaki, Takashi Nakano
The pancake kidney (PK) is a rare type of renal anomaly in which both kidneys completely fuse without an isthmus. In the previous reports, PKs have double ureters and are located in the pelvic cavity. We encountered a rare case of PK with a single ureter, which is located in the left retroperitoneal space, in a 95-year-old female cadaver, which was detected during a dissection course. In our case, the major calyces joined to form a single renal pelvis, which continued as a single ureter. To the best of our knowledge, this is the first report on PK with a single ureter that is located not in the pelvic cavity but in the retroperitoneal space...
May 18, 2018: Anatomical Science International
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