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https://www.readbyqxmd.com/read/29448705/dimerization-of-ethylene-to-butenes-over-ordered-mesoporous-silica-sba-15-supported-ni-al-catalysts-with-different-morphologies
#1
Tae-Wan Kim, Jong Won Jun, Seok Il Hong, Chul-Ung Kim
A series of ordered mesoporous silica (OMS) SBA-15 supports with different morphologies were prepared by different synthetic methods to investigate the effect of the characteristics of the morphology of OMS on the ethylene dimerization outcomes. After additions of Ni and Al species into the SBA-15 support, a dimerization reaction of ethylene was performed using a fixed-bed reactor. Rod-type Ni-Al-SBA-15 with a small micron size showed better catalytic performance compared to those of the other catalysts. From these catalytic results, the particle size and morphology of a SBA-15 support critically influenced the catalytic activities and lifetimes of the dimerization catalysts...
March 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29427261/simulative-design-in-macroscale-for-prospective-application-to-micro-catheters
#2
Cheol Woo Ha
In this paper, a motion-transforming element is applied to the development of a new catheter device. The motion-transforming element structure allows a reduction of linear movement and converts linear movement to rotational movement. The simulative design of micro-catheters is based on a proposed structure called the Operating Mini Station (OMS). OMS is operated by movement of a motion-transforming element. A new motion-transforming element is designed using multiple links that are connected by hinged joints based on an elastic design...
February 9, 2018: Biomedical Microdevices
https://www.readbyqxmd.com/read/29372878/the-transperiosteal-inside-out-occipital-artery-harvesting-technique
#3
Arnau Benet, Halima Tabani, Xinmin Ding, Jan-Karl Burkhardt, Roberto Rodriguez Rubio, Ali Tayebi Meybodi, Peyton Nisson, Olivia Kola, Sirin Gandhi, Sonia Yousef, Michael T Lawton
OBJECTIVE The occipital artery (OA) is a frequently used donor vessel for posterior circulation bypass procedures due to its proximity to the recipient vessels and its optimal caliber, length, and flow rate. However, its tortuous course through multiple layers of suboccipital muscles necessitates layer-by-layer dissection. The authors of this cadaveric study aimed to describe a landmark-based novel anterograde approach to harvest OA in a proximal-to-distal "inside-out" fashion, which avoids multilayer dissection...
January 26, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29362165/preoperative-detailed-coagulation-tests-are-required-in-patients-with-noonan-syndrome
#4
Anne Morice, Annie Harroche, Pascale Cairet, Roman H Khonsari
PURPOSE: Patients with Noonan syndrome often require surgery at young ages. They are at high risk of perioperative bleeding from coagulation defects that might not have been detected by routine screening. These risks are rarely described in the oral and maxillofacial surgery (OMS) literature. The aim of this study was to evaluate the perioperative bleeding risks associated with Noonan syndrome and to propose preoperative guidelines. MATERIALS AND METHODS: This report describes a retrospective case series of patients with Noonan syndrome who underwent OMS procedures during a continuous observational period (2013 through 2016) in the authors' center...
December 29, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29318181/neuroimmunology-of-oms-and-anna-1-anti-hu-paraneoplastic-syndromes-in-a-child-with-neuroblastoma
#5
Michael R Pranzatelli, Nathan R McGee
No abstract text is available yet for this article.
March 2018: Neurology® Neuroimmunology & Neuroinflammation
https://www.readbyqxmd.com/read/29296903/osteomacs-interact-with-megakaryocytes-and-osteoblasts-to-regulate-murine-hematopoietic-stem-cell-function
#6
Safa F Mohamad, Linlin Xu, Joydeep Ghosh, Paul J Childress, Irushi Abeysekera, Evan R Himes, Hao Wu, Marta B Alvarez, Korbin M Davis, Alexandra Aguilar-Perez, Jung Min Hong, Angela Bruzzaniti, Melissa A Kacena, Edward F Srour
Networking between hematopoietic stem cells (HSCs) and cells of the hematopoietic niche is critical for stem cell function and maintenance of the stem cell pool. We characterized calvariae-resident osteomacs (OMs) and their interaction with megakaryocytes to sustain HSC function and identified distinguishing properties between OMs and bone marrow (BM)-derived macrophages. OMs, identified as CD45+F4/80+ cells, were easily detectable (3%-5%) in neonatal calvarial cells. Coculture of neonatal calvarial cells with megakaryocytes for 7 days increased OM three- to sixfold, demonstrating that megakaryocytes regulate OM proliferation...
December 12, 2017: Blood Advances
https://www.readbyqxmd.com/read/29288627/characterization-of-the-first-planctomycetal-outer-membrane-protein-identifies-a-channel-in-the-outer-membrane-of-the-anammox-bacterium-kuenenia-stuttgartiensis
#7
Muriel C F van Teeseling, Roland Benz, Naomi M de Almeida, Mike S M Jetten, Rob J Mesman, Laura van Niftrik
Planctomycetes are a bacterial phylum known for their complex intracellular compartmentalization. While most Planctomycetes have two compartments, the anaerobic ammonium oxidizing (anammox) bacteria contain three membrane-enclosed compartments. In contrast to a long-standing consensus, recent insights suggested the outermost Planctomycete membrane to be similar to a Gram-negative outer membrane (OM). One characteristic component that differentiates OMs from cytoplasmic membranes (CMs) is the presence of outer membrane proteins (OMPs) featuring a ß-barrel structure that facilitates passage of molecules through the OM...
December 27, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29260235/external-validation-of-approaches-to-prediction-of-falls-during-hospital-rehabilitation-stays-and-development-of-a-new-simpler-tool
#8
Angela Vratsistas-Curto, Anne Tiedemann, Daniel Treacy, Stephen R Lord, Cathie Sherrington
OBJECTIVES: To test the external validity of 4 approaches to fall prediction in a rehabilitation setting (Predict_FIRST, Ontario Modified STRATIFY (OMS), physiotherapists' judgement of fall risk (PT_Risk), and falls in the past year (Past_Falls)), and to develop and test the validity of a simpler tool for fall prediction in rehabilitation (Predict_CM2). PARTICIPANTS: A total of 300 consecutively-admitted rehabilitation inpatients. METHODS: Prospective inception cohort study...
December 19, 2017: Journal of Rehabilitation Medicine
https://www.readbyqxmd.com/read/29217241/myocardial-protection-in-mitral-valve-surgery-comparison-between-minimally-invasive-approach-and-standard-sternotomy
#9
Jean-Sébastien Lebon, Pierre Couture, Annik Fortier, Antoine G Rochon, Christian Ayoub, Claudia Viens, Éric Laliberté, Denis Bouchard, Michel Pellerin, Alain Deschamps
OBJECTIVE: To compare antegrade and retrograde cardioplegia administration in minimally invasive mitral valve surgery (MIMS) and open mitral valve surgery (OMS) for myocardial protection. DESIGN: Retrospective study. SETTING: Tertiary care university hospital. PARTICIPANTS: The study comprised 118 patients undergoing MIMS and 118 patients undergoing OMS. INTERVENTIONS: The data of patients admitted for MIMS from 2006 to 2010 were reviewed...
August 30, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29208617/stigma-towards-mental-illness-among-medical-and-nursing-students-in-singapore-a-cross-sectional-study
#10
Sherilyn Chang, Hui Lin Ong, Esmond Seow, Boon Yiang Chua, Edimansyah Abdin, Ellaisha Samari, Wen Lin Teh, Siow Ann Chong, Mythily Subramaniam
OBJECTIVES: To assess stigma towards people with mental illness among Singapore medical and nursing students using the Opening Minds Stigma Scale for Health Care Providers (OMS-HC), and to examine the relationship of students' stigmatising attitudes with sociodemographic and education factors. DESIGN AND SETTING: Cross-sectional study conducted in Singapore PARTICIPANTS: The study was conducted among 1002 healthcare (502 medical and 500 nursing) students during April to September 2016...
December 4, 2017: BMJ Open
https://www.readbyqxmd.com/read/29174862/clinical-implications-of-taste-thresholds-in-patients-with-odontogenic-maxillary-sinusitis
#11
T Tsuji, S Tanaka, Y Nishide, M Kogo, T Yamamoto
Patients with odontogenic maxillary sinusitis (OMS) often complain of reduced taste sensitivity as well as nasal obstruction. The filter paper disc method (the conventional gustatory test) was applied to nine patients who underwent sinus surgery to open the inferior nasal meatus and sinus drainage, on three different days: 1day prior to surgery, 7days postoperative, and 28days postoperative. The same test was applied to nine non-clinical participants with or without clipping the nose to interfere with smooth nasal airflow on two different days...
November 23, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29169785/-parental-alienation-child-psychological-abuse-and-dsm-5
#12
P Bensussan
Psychiatric experts find it is easier to deal with more horrible crimes than highly conflictual divorces. In the former, projections are impossible and "files" raise very interesting issues with regard to criminology; in contrast, in the latter the expert is confronted not just with a family but also and lest one forget, a couple that at one point in time had loved each other. However, the separation resembles a bloodbath. We will not detail the various psychiatric pathologies, which may further complicate a separation: they are well-known and, on a procedural level, do not raise any specific concerns...
November 20, 2017: L'Encéphale
https://www.readbyqxmd.com/read/29162572/protocol-a-cluster-randomised-control-trial-study-exploring-stigmatisation-and-recovery-based-perspectives-regarding-mental-illness-and-substance-use-problems-among-primary-healthcare-providers-across-toronto-ontario
#13
Akwatu Khenti, Robert Mann, Jaime C Sapag, Sireesha J Bobbili, Emily K Lentinello, Mark van der Maas, Branka Agic, Hayley Hamilton, Heather Stuart, Scott Patten, Marcos Sanches, Patrick Corrigan
INTRODUCTION: Primary care settings are often the first and only point of contact for persons with mental health and/or substance use problems. However, staff experience and training in this area are often limited. These factors as well as a multitude of other components such as structural and systemic stigma experienced by staff can lead to clients being stigmatised, leading to poorer outcomes. By developing a comprehensive intervention for primary care staff working at community health centres (CHCs) aimed at reducing stigma towards people with mental health and substance use problems (MHSUP), we sought to test an innovative and contact-based intervention consisting of staff training, raising awareness, a recovery-focused art programme and an analysis of internal policies and procedures...
November 20, 2017: BMJ Open
https://www.readbyqxmd.com/read/29152432/acute-changes-in-mentation-in-a-patient-with-hepatic-cirrhosis-treated-with-high-doses-of-dexamethasone
#14
Luis Dabul, Andrew Droney, Juan Oms, Marcos A Sanchez-Gonzalez
Despite the anti-inflammatory benefits of steroids in the management of multiple medical conditions, they are associated with undesired metabolic and psychiatric side effects. We present a case of a 57-year-old Hispanic man with hepatic cirrhosis due to hepatitis C and no past medical history of psychiatric illnesses who became delirious after treatment with high doses of intravenous Dexamethasone. The patient presented to Larkin Community Hospital, USA with complaints of lower back pain requiring treatment with steroids for severe lumbar central canal stenosis...
September 10, 2017: Curēus
https://www.readbyqxmd.com/read/29142779/-comparative-analysis-of-grade-i-vs-grade-ii-intracranial-meningiomas-in-a-retrospective-series-of-63-patients
#15
Federico Coppola, Juan Iaconis Campbell, Juan Manuel Herrero, Emilio Volpe, Tito Cersosimo
Objective: We aimed to demonstrate the differences between grade I and II (OMS classification) of intracranial meningiomas. We evaluate their location, Simpson resection grade, re-operations rate, adjuvant treatment and patient outcomes. Methods: We conduct a retrospective review of Sixty- three clinical records of patients who were diagnosed with meningiomas grade I and II (OMS) between 2009-2015 and received surgical treatment at our Hospital. We evaluated different variables such as age, sex, histological type, Simpson grade resection, location, symptoms, radiotherapy, follow-up, mortality rate and patient outcome...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/29135842/genomic-profiles-of-neuroblastoma-associated-with-opsoclonus-myoclonus-syndrome
#16
Barbara Hero, Nathalie Clement, Ingrid Øra, Gaelle Pierron, Eve Lapouble, Jessica Theissen, Claudia Pasqualini, Dominique Valteau-Couanet, Dominique Plantaz, Jean Michon, Olivier Delattre, Marc Tardieu, Gudrun Schleiermacher
Opsoclonus myoclonus syndrome (OMS), often called "dancing eyed syndrome," is a rare neurological condition associated with neuroblastoma in the majority of all childhood cases. Genomic copy number profiles have shown to be of prognostic significance for neuroblastoma patients. The aim of this retrospective multicenter study was to analyze the genomic copy number profiles of tumors from children with neuroblastoma presenting with OMS at diagnosis. In 44 cases of neuroblastoma associated with OMS, overall genomic profiling by either array-comparative genomic hybridization or single nucleotide polymorphism array proved successful in 91% of the cases, distinguishing tumors harboring segmental chromosome alterations from those with numerical chromosome alterations only...
November 13, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/29131841/determining-the-effectiveness-of-a-video-based-contact-intervention-in-improving-attitudes-of-penang-primary-care-nurses-towards-people-with-mental-illness
#17
Yin Ping Ng, Abdul Rashid, Finian O'Brien
BACKGROUND: Mental illness-related stigma is common, and is associated with poorer outcomes in people with mental illness. This study evaluated the attitudes of primary care nurses towards people with mental illness and its associated factors; and the effectiveness of a short video-based contact intervention (VBCI) in improving these attitudes using a Malay version of the 15-item Opening Minds Stigma Scale for Healthcare Providers (OMS-HC-15-M). METHODS: A 5-minute VBCI was developed comprising elements of psychoeducation and interviews of people with mental illness and the people they interact with, relating to experience of mental illness and recovery...
2017: PloS One
https://www.readbyqxmd.com/read/29097138/does-length-of-intubation-before-tracheostomy-affect-intensive-care-unit-length-of-stay
#18
Shaun R Young, Gary F Bouloux, Sebastian D Perez, Shelly Abramowicz
OBJECTIVE: The purpose of this study was to determine if length of intubation before tracheotomy (LIT) affects length of stay in the intensive care unit (ICU). STUDY DESIGN: This was a retrospective case series of patients who had open tracheotomies at Grady Memorial Hospital by the Oral and Maxillofacial Surgery (OMS) service. Medical records were reviewed to document patient demographic characteristics, etiology for ventilator dependence, and complications. The primary predictor variable was LIT and primary outcome variable was length of stay in ICU after tracheotomy...
September 27, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/29082773/size-distribution-and-clinico-radiological-signs-of-aggressiveness-in-odontogenic-myxoma-three-dimensional-analysis-and-systematic-review
#19
Martin Kauke, Ali-Farid Safi, Matthias Kreppel, Andrea Grandoch, Hans-Joachim Nickenig, Joachim E Zöller, Timo Dreiseidler
OBJECTIVES: Therapeutic assessment of odontogenic myxoma (OM) is poorly standardized. Unidimensional size criteria have shown to be unreliable in therapeutic decision-making. We evaluate the size distribution of OM and scan for associated clinico-radiological signs of aggressiveness. Additionally, we evaluate three-dimensional size delineation of OM, aiming to improve future therapeutic assessment of this destructive neoplasm. METHODS: Primarily, we reviewed the database "PubMed" for data concerning the size of OMs as radiologically determined...
October 30, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/29074258/polyhydroxylated-azetidine-iminosugars-synthesis-glycosidase-inhibitory-activity-and-molecular-docking-studies
#20
Pravin P Lawande, Vyankat A Sontakke, Navanath M Kumbhar, Tanay R Bhagwat, Sougata Ghosh, Vaishali S Shinde
An efficient and practical strategy for the synthesis of unknown azetidine iminosugars (2S,3R,4S)-2-((R)-1,2-dihydroxyethyl)-3-hydroxy-4-(hydroxymethyl)azetidine 2, (2S,3r,4R)-3-hydroxy-2,4-bis(hydroxymethyl)azetidine 3 and (2S,3R,4S)-3-hydroxy-4-(hydroxymethyl)-N-methylazetidine-2-carboxylic acid 4, starting from the d-glucose has been reported. The methodology involves preparation of the 3-amino-N-benzyloxycarbonyl-3-deoxy-6-O-tert-butyldimethylsillyl-1,2-O-isopropylidene-α-d-glucofuranose 9, which was converted to the C-5-OMs derivative 11...
October 14, 2017: Bioorganic & Medicinal Chemistry Letters
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