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https://www.readbyqxmd.com/read/27924914/arctic-lakes-show-strong-decadal-trend-in-earlier-spring-ice-out
#1
Tereza Šmejkalová, Mary E Edwards, Jadunandan Dash
The timing of the seasonal freeze-thaw cycle of arctic lakes affects ecological processes and land-atmosphere energy fluxes. We carried out detailed ice-phenology mapping of arctic lakes, based on daily surface-reflectance time series for 2000-2013 from MODIS at 250 m spatial resolution. We used over 13,300 lakes, area >1 km(2), in five study areas distributed evenly across the circumpolar Arctic - the first such phenological dataset. All areas showed significant trends towards an earlier break-up, stronger than previously reported...
December 7, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27923541/protecting-from-envelope-stress-variations-on-the-phage-shock-protein-theme-trends-in-microbiology-25-first-page-en-dash-last-page-2017
#2
Riccardo Manganelli, Maria Laura Gennaro
No abstract text is available yet for this article.
December 3, 2016: Trends in Microbiology
https://www.readbyqxmd.com/read/27917422/-3-2-annulation-of-platinum-bound-azomethine-ylides-with-distal-c-double-bond-length-as-m-dash-c-bonds-of-n-allenamides
#3
Indradweep Chakrabarty, Suleman M Inamdar, Manjur O Akram, Amol B Gade, Subhrashis Banerjee, Saibal Bera, Nitin T Patil
A Pt-catalyzed, highly regioselective reaction between N-allenamides and imino-alkynes leading to pyrrolo[1,2-a]indoles is described. This represents the first example of [3+2]-annulation of Pt-bound azomethine ylides with the distal C[double bond, length as m-dash]C bond of N-allenamides. The mechanism of the reaction was established by computational studies.
December 5, 2016: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/27917418/an-unprecedented-1-4-diphospha-2-3-disila-butadiene-p-double-bond-length-as-m-dash-si-si-double-bond-length-as-m-dash-p-derivative-and-a-1-3-diphospha-2-silaallyl-anion-each-stabilized-by-the-amidinate-ligand
#4
Subrata Kundu, Chandrajeet Mohapatra, Prinson P Samuel, Johannes Kretsch, M G Walawalkar, Regine Herbst-Irmer, Dietmar Stalke, Sriman De, Debasis Koley, Herbert W Roesky
The first acyclic 4π-electron -P[double bond, length as m-dash]Si-Si[double bond, length as m-dash]P- motif with two four coordinate silicon substituents supported by the amidinate ligand and two coordinate phosphorus has been synthesized from the reaction of heteroleptic chlorosilylene LSiCl (1), TripPCl2 (Trip = 2,4,6-(i)Pr3C6H2) and KC8 in a 1 : 1 : 3 ratio. The same reaction in a 1 : 2 : 6 ratio in the presence of one equivalent of 18-crown-6 ether affords the 1,3-diphospha-2-silaallyl anion...
December 5, 2016: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/27910884/the-hha-tomb-toxin-antitoxin-system-shows-conditional-toxicity-and-promotes-persister-cell-formation-by-inhibiting-apoptosis-like-death-in-s-typhimurium
#5
Sangeeta Jaiswal, Prajita Paul, Chandrashekhar Padhi, Shilpa Ray, Daniel Ryan, Shantoshini Dash, Mrutyunjay Suar
Toxin-antitoxin (TA) modules are two component "addictive" genetic elements found on either plasmid or bacterial chromosome, sometimes on both. TA systems perform a wide range of functions like biofilm formation, persistence, programmed cell death, phage abortive infection etc. Salmonella has been reported to contain several such TA systems. However, the hemolysin expression modulating protein (Hha) and its adjacent uncharacterized hypothetical protein TomB (previously known as YbaJ), have not been listed as a TA module in Salmonella...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27909754/dual-plate-fixation-on-distal-third-diaphyseal-fracture-of-the-humerus
#6
Jun-Ku Lee, Yun-Sung Choi, Young-Suk Sim, Dae-Sung Choi, Soo-Hong Han
INTRODUCTION: Displaced unstable distal third fractures of the humeral diaphysis are treated surgically through open reduction and internal fixation. Conventionally, surgeons prefer using long plates for secure fixation; however, we performed short plate dual plating for robust fixation that required a smaller incision and less dissection through an anterior approach. In this study, we report the results of dual plating of fractures of the humeral shaft, with radiographic evidence and clinical analysis...
December 1, 2016: International Orthopaedics
https://www.readbyqxmd.com/read/27909705/transition-metal-catalyzed-iodine-iii-mediated-nitrene-transfer-reactions-efficient-tools-for-challenging-syntheses
#7
B Darses, R Rodrigues, L Neuville, M Mazurais, P Dauban
The significant progress made in the area of transition metal-catalyzed nitrene transfer into C-H or C[double bond, length as m-dash]C bonds mediated by iodine(iii) oxidants has been translated into many elegant synthetic applications. This feature article summarizes the main total syntheses that take advantage of such reactions, thereby highlighting that catalytic C(sp(3))-H amination and alkene aziridination reactions have carved out their place in the organic chemist's toolbox.
December 2, 2016: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/27909126/medium-term-outcomes-of-the-universal-2-total-wrist-arthroplasty-in-patients-with-rheumatoid-arthritis
#8
R Badge, K Kailash, D R Dickson, S Mahalingam, A Raza, A Birch, D Nuttall, S R Murali, M J Hayton, S Talwalkar, A C Watts, I A Trail
AIMS: The aims of this study were to evaluate the clinical and radiological outcomes of the Universal-2 total wrist arthroplasty (TWA) in patients with rheumatoid arthritis. PATIENTS AND METHODS: This was a retrospective review of all 95 Universal-2 TWAs which were performed in our institution between 2003 to 2012 in patients with rheumatoid arthritis. A total of six patients were lost to follow-up and two died of unrelated causes. A total of ten patients had bilateral procedures...
December 2016: Bone & Joint Journal
https://www.readbyqxmd.com/read/27907840/clinical-68-ga-pet-is-radiosynthesis-module-an-absolute-necessity
#9
Rubel Chakravarty, Sudipta Chakraborty, E R Radhakrishnan, Koramadai Kamaleshwaran, Ajit Shinto, Ashutosh Dash
INTRODUCTION: The commercially available (68)Ge/(68)Ga generators are generally used in clinical context in conjunction with automated or semi-automated modules for the syntheses of (68)Ga radiopharmaceuticals. It is desirable to develop strategies for the formulation of (68)Ga-radiopharmaceuticals without use of such expensive modules in order to make (68)Ga-based clinical positron emission tomography (PET) more popular and affordable worldwide. METHODS: An organic matrix based (68)Ge/(68)Ga generator was used for preparation of clinically relevant doses of four different (68)Ga-based radiopharmaceuticals, namely (68)Ga-DOTA-NOC, (68)Ga-NODAGA-RGD2, (68)Ga-PSMA-11 and (68)Ga-BPAMD...
November 16, 2016: Nuclear Medicine and Biology
https://www.readbyqxmd.com/read/27906398/cooperation-and-competition-between-halogen-bonding-and-van-der-waals-forces-in-supramolecular-engineering-at-the-aliphatic-hydrocarbon-graphite-interface-position-and-number-of-bromine-group-effects
#10
Bao Zha, Meiqiu Dong, Xinrui Miao, Shan Peng, Yican Wu, Kai Miao, Yi Hu, Wenli Deng
Herein, the photophysical properties of two π-conjugated thienophenanthrene derivatives (6,9- and 5,10-DBTD) are reported. Their self-assembled monolayers in aliphatic hydrocarbon solvents under different concentrations were investigated by scanning tunneling microscopy on a graphite surface. The STM results revealed that the self-assembled structures of the two geometrical isomers exhibited absolutely different behaviors. At the aliphatic solvent/graphite interface, 6,9-DBTD produced almost a single stable coassembled linear structure, except for that with n-tridecane as the solvent...
December 1, 2016: Nanoscale
https://www.readbyqxmd.com/read/27904948/evaluation-of-the-reliability-and-validity-of-the-persian-version-of-patient-rated-elbow-evaluation-questionnaire
#11
Mohammad Reza Farazdaghi, Ali Mansoori, Omid Vosoughi, Amin Kordi Yoosefinejad
Elbow joint pathologies are highly prevalent in Persian-speaking countries. A reliable low-cost method like an appropriate questionnaire is mandatory for the early diagnosis of elbow joint disorders. Among designed questionnaires, Patient-Rated Elbow Evaluation (PREE) is an accepted commonly used scale evaluating pain and dysfunction of the patients. The aims of the study were to cross-culturally adapt and also to identify the psychometric properties of the Persian PREE. The original version of the PREE was translated and cross-culturally adapted to Persian according to the guidelines by Beaton et al...
November 30, 2016: Rheumatology International
https://www.readbyqxmd.com/read/27904716/is-anterior-bridge-plating-for-mid-shaft-humeral-fractures-a-suitable-option-for-patients-predominantly-involved-in-overhead-activities-a-functional-outcome-study-in-athletes-and-manual-laborers
#12
Abhishek S Mahajan, Young Gun Kim, Jae Hwa Kim, Prashanth D'sa, Azhar Lakhani, Hyun Soo Ok
BACKGROUND: To assess the functional and radiological outcomes of minimally invasive anterior bridge plating (ABP) for mid-shaft humerus fractures in patients predominantly involved in overhead activities (athletes and manual laborers). METHODS: Forty-eight patients fulfilling inclusion criteria were treated with ABP at a level-I trauma center using a 4.5-mm dynamic/locking compression plate and followed for a period of 1 year. Functional outcome was assessed using the Constant, Mayo elbow, and Disabilities of the Arm, Shoulder and Hand (DASH) scores...
December 2016: Clinics in Orthopedic Surgery
https://www.readbyqxmd.com/read/27903474/functional-assessment-and-evaluation-of-outcome-after-endovascular-therapy-with-coverage-of-the-left-subclavian-artery-in-case-of-blunt-thoracic-aortic-injury
#13
A Gombert, D Kotelis, U M Griepenkerl, G Fraedrich, J Klocker, B Glodny, M J Jacobs, A Greiner, J Grommes
OBJECTIVE: Patients suffering blunt thoracic aortic injury (BTAI) can be treated by use of thoracic endovascular aortic repair (TEVAR). In this setting, the coverage of the left subclavian artery (LSA) is frequently necessary. Nevertheless, the functionality of the upper left extremity after TEVAR had been rarely analyzed. Thus this study intends to underline the safety of TEVAR as well as to determine the functionality of the left arm after coverage of the LSA. METHODS: All patients suffering from BTAI treated by endovascular means in three centers (Aachen [Germany], Maastricht [Netherlands] and Innsbruck [Austria]) between 1996 and 2009 were retrospectively analyzed...
November 26, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27902707/an-economic-geography-of-the-united-states-from-commutes-to-megaregions
#14
Garrett Dash Nelson, Alasdair Rae
The emergence in the United States of large-scale "megaregions" centered on major metropolitan areas is a phenomenon often taken for granted in both scholarly studies and popular accounts of contemporary economic geography. This paper uses a data set of more than 4,000,000 commuter flows as the basis for an empirical approach to the identification of such megaregions. We compare a method which uses a visual heuristic for understanding areal aggregation to a method which uses a computational partitioning algorithm, and we reflect upon the strengths and limitations of both...
2016: PloS One
https://www.readbyqxmd.com/read/27900924/-persistent-shoulder-symptoms-in-calcific-tendinitis-clinical-and-radiological-predictors
#15
P B de Witte, R A van Adrichem, J W Selten, J Nagels, M Reijnierse, R G H H Nelissen
OBJECTIVE: We assessed the most important demographics and radiological characteristics at the time of diagnosis of rotator cuff calcific tendinitis (RCCT), and their associations with long-term clinical outcome. DESIGN: Observational study. METHOD: Baseline characteristics and treatment were evaluated in 342 patients in whom RCCT had been diagnosed. Interobserver agreement of the radiological investigations was analysed. Patients were sent a general questionnaire and 2 shoulder questionnaires, the "Western Ontario rotator cuff" (WORC) and the "Disabilities of the arm, shoulder and hand" (DASH) for evaluation of long-term clinical outcome...
2016: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/27900703/the-treatment-of-distal-third-humeral-diaphyseal-fractures-is-there-still-a-place-for-the-external-fixation
#16
N Tartaglia, G Vicenti, M Carrozzo, A Abate, F Rifino, G Picca, G Solarino, B Moretti
INTRODUCTION: The treatment for humeral diaphyseal fractures is still controversial. The purpose of this study was to evaluate the clinical and radiographic outcomes of treating humeral distal third diaphyseal fractures by using external fixation technique. MATERIALS AND METHODS: We retrospectively review 65 cases of diaphyseal humeral fractures (31 type A, 23 type B and 11 type C of the AO/OTA classification) treated with external fixation (Orthofix FAD small) between 2008 and 2013...
December 2016: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/27900700/platelet-rich-plasma-supplementation-in-arthroscopic-repair-of-full-thickness-rotator-cuff-tears-a-randomized-clinical-trial
#17
R D'Ambrosi, F Palumbo, A Paronzini, V Ragone, R M Facchini
BACKGROUND: Results on the effectiveness of PRP supplementation in arthroscopic rotator cuff repair are conflicting, making it difficult to draw definitive conclusions. METHODS: This was a prospective, randomized, and double-blind study with two groups of 20 patients each (PRP group and control group). Degenerative supraspinatus full-thickness tears grade C2-C3 were subjected to arthroscopic repair; PRP supplementation was given to patients in the PRP group. The outcomes were assessed by DASH, Constant scales, and ultrasound before and 6 months after surgery...
December 2016: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/27900545/functional-and-oncological-outcome-after-surgical-resection-of-the-scapula-and-clavicle-for-primary-chondrosarcoma
#18
S P F T Nota, M J A M Russchen, K A Raskin, H J Mankin, F J Hornicek, J H Schwab
PURPOSE: The scapula is a relatively common site for chondrosarcoma to develop in contrary to the clavicle, which is rarely affected by these tumors. The aim of this study is to determine the functional and oncological outcome for patients treated operatively for scapular or clavicular chondrosarcoma. METHODS: In this single-center retrospective study, we included a sample of 20 patients that received the diagnosis of a primary chondrosarcoma of the scapula or clavicle...
November 29, 2016: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/27900307/arthroscopic-fixation-of-coronoid-process-fractures-through-coronoid-tunnelling-and-capsular-plication
#19
Paolo Arrigoni, Riccardo D'Ambrosi, Davide Cucchi, Simone Nicoletti, Enrico Guerra
PURPOSE: the purpose of this study is to describe a new arthroscopic technique for reduction and fixation of coronoid process fractures (CPFs) and report clinical and functional results in 4 patients after a 24-month follow-up. METHODS: four patients underwent arthroscopic reduction and fixation of isolated CPFs (acute or non-unions, type I or type II according to the Regan-Morrey classification) performed using a new technique based on coronoid tunnelling and capsular plication...
July 2016: Joints
https://www.readbyqxmd.com/read/27897200/lipid-ii-independent-antimicrobial-mechanism-of-nisin-depends-on-its-crowding-and-degree-of-oligomerization
#20
Ashutosh Prince, Padmani Sandhu, Pankaj Kumar, Eva Dash, Shingarika Sharma, Manoranjan Arakha, Suman Jha, Yusuf Akhter, Mohammed Saleem
Nisin inhibits bacterial growth by generating pores in cell membrane and interrupting cell-wall biosynthesis through specific lipid II interaction. However, the role of the hinge region and C-terminus residues of the peptide in antibacterial action of nisin is largely unknown. Here, using molecular dynamics simulations and experimental approach, we report that at high concentration regimes of nisin, interaction with phospholipids may equally deform the bacterial cell membranes even under significantly varying amounts of lipid-II...
November 29, 2016: Scientific Reports
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