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https://www.readbyqxmd.com/read/28334448/carotid-artery-bursting-pressure-and-seal-time-after-multiple-uses-of-a-vessel-sealing-device
#1
Jocelin S Blake, Brian J Trumpatori, Kyle G Mathews, Emily H Griffith
OBJECTIVE: To determine any loss of function of a single-use bipolar vessel sealing device after repeated sterilization and use on canine carotid arteries. STUDY DESIGN: Ex vivo; randomized block design (dog). SAMPLE POPULATION: Carotid artery segments (n = 90) from 15 canine cadavers. METHODS: Six 10-mm LigaSure Atlas 20 cm devices (Covidien Inc, Minneapolis, Minnesota) were used to seal canine carotid artery segments in one cadaver, then resterilized using ethylene oxide and reused in a second cadaver, and so on, for a total of 15 uses/15 cadavers per LigaSure...
March 23, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28329903/-headache-treatment
#2
Hans Christoph Diener, Dagny Holle-Lee, Steffen Nägel, Charly Gaul
A precondition for the successful treatment of headaches is the correct headache diagnosis. Triptans are effective for attack treatment of migraine and cluster headache. However, there are not effective for the treatment of tension-type headache. For the prevention of frequent episodic migraine betablockers, flunarizine, topiramate and amitriptyline are recommended. For the prevention of chronic migraine evidence is only available for onabotulinumtoxinA and topiramate. For prophylactic treatment of tension-type headaches tricyclic antidepressants are used...
March 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28329901/-pathophysiology-of-headaches
#3
Charly Gaul, Karl Meßlinger, Dagny Holle-Lee, Lars Neeb
Pathophysiological concepts of primary headache diseases have been developed significantly in the last decades. Nevertheless pathophysiology of single diseases is unexplained. Migraine headache arises from activation and sensibilization of trigeminal nociceptors, essential processes are located at the meninges and the meningeal vessels. Calcitonin gene-related peptide (CGRP) seems to have essential importance concerning migraine and cluster headache. Mechanisms leading to peripheral and central sensitization are relevant in chronification of migraine and tension-type headache...
March 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28328359/pediatric-acute-care-decision-implications-of-genetically-discoverable-mental-disorders
#4
Danton Char
No abstract text is available yet for this article.
April 2017: American Journal of Bioethics: AJOB
https://www.readbyqxmd.com/read/28325703/investigation-of-sewage-sludge-treatment-using-air-plasma-assisted-gasification
#5
Nerijus Striūgas, Vitas Valinčius, Nerijus Pedišius, Robertas Poškas, Kęstutis Zakarauskas
This study presents an experimental investigation of downdraft gasification process coupled with a secondary thermal plasma reactor in order to perform experimental investigations of sewage sludge gasification, and compare process parameters running the system with and without the secondary thermal plasma reactor. The experimental investigation were performed with non-pelletized mixture of dried sewage sludge and wood pellets. To estimate the process performance, the composition of the producer gas, tars, particle matter, producer gas and char yield were measured at the exit of the gasification and plasma reactor...
March 18, 2017: Waste Management
https://www.readbyqxmd.com/read/28315602/synergistic-effect-on-co-gasification-reactivity-of-biomass-petroleum-coke-blended-char
#6
Juntao Wei, Qinghua Guo, Yan Gong, Lu Ding, Guangsuo Yu
In this work, effects of gasification temperature (900°C-1100°C) and blended ratio (3:1, 1:1, 1:3) on reactivity of petroleum coke and biomass co-gasification were studied in TGA. Quantification analysis of active AAEM transformation and in situ investigation of morphological structure variations in gasification were conducted respectively using inductively coupled plasma optical emission spectrometer and heating stage microscope to explore synergistic effect on co-gasification reactivity. The results indicated that char gasification reactivity was enhanced with increasing biomass proportion and gasification temperature...
March 3, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28293188/evidence-for-narrow-transfer-after-short-term-cognitive-training-in-older-adults
#7
Dustin J Souders, Walter R Boot, Kenneth Blocker, Thomas Vitale, Nelson A Roque, Neil Charness
The degree to which "brain training" can improve general cognition, resulting in improved performance on tasks dissimilar from the trained tasks (transfer of training), is a controversial topic. Here, we tested the degree to which cognitive training, in the form of gamified training activities that have demonstrated some degree of success in the past, might result in broad transfer. Sixty older adults were randomly assigned to a gamified cognitive training intervention or to an active control condition that involved playing word and number puzzle games...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28289770/pyrolysis-oil-biorefinery
#8
Dietrich Meier
In biorefineries several conversion processes for biomasses may be applied to obtain maximum value from the feed materials. One viable option is the liquefaction of lignocellulosic feedstocks or residues by fast pyrolysis. The conversion technology requires rapid heating of the biomass particles along with rapid cooling of the hot vapors and aerosols. The main product, bio-oil, is obtained in yields of up to 75 wt% on a dry feed basis, together with by-product char and gas which are used within the process to provide the process heat requirements; there are no waste streams other than flue gas and ash...
March 14, 2017: Advances in Biochemical Engineering/biotechnology
https://www.readbyqxmd.com/read/28289365/br%C3%A3-lologie-et-m%C3%A3-decine-l%C3%A3-gale-les-victimes-d%C3%A2-incendie
#9
R Costagliola, J-P Campana, M Costagliola
During a judicial inquiry, the forensic doctor is frequently required to examine the hospitalized fire victim. He has to produce a certificate on the burns, defining their origin, seriousness and prognosis. The expert assessment of serious burn victims consists in an overall evaluation of functional and psychological sequelae, and can be conducted only after the long period of treatment needed for them to heal. The expert must know the forensic rules concerning the specific features of sequelae that follow a cutaneous burn injury...
December 31, 2016: Annals of Burns and Fire Disasters
https://www.readbyqxmd.com/read/28284942/investigation-on-by-products-of-bioenergy-systems-anaerobic-digestion-and-gasification-as-potential-crop-nutrient-using-ftir-xrd-sem-analysis-and-phyto-toxicity-test
#10
Sampriti Kataki, Samarendra Hazarika, D C Baruah
Success and acceptability of the bio energy conversion technology to a large extent depend upon management of the inevitable by-products generated during the conversion process. By-products can be considered favourable as organic fertilizer as they retain nutrients with varying composition depending upon input biomass. However, characteristics of these heterogeneous resources with respect to feedstock and processing conditions have to be assessed to state on their agricultural and environmental benefits. Therefore, 3 types of anaerobic digestion by-products (digestate) from surplus biomass viz...
March 9, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28284576/hemostasis-in-endoscopic-endonasal-skull-base-surgery-using-the-aquamantys-bipolar-sealer-technical-note
#11
Richard Bram, Susan Fiore, Daryl McHugh, Ghassan J Samara, Raphael P Davis
BACKGROUND: A major challenge during endoscopic transsphenoidal surgery is adequate intraoperative hemostasis. The Aquamantys® is a relatively new bipolar sealing device which uses radiofrequency energy and saline. This promotes hemostasis while decreasing charring and thermal spread. In this paper, we describe our experience with the Aquamantys® Mini EVS 3.4 Epidural Vein Sealer Bipolar Electrocautery System (Medtronic Advanced Energy, Portsmouth, NH, USA) during endoscopic surgery for tumors of the skull base with particular attention to ergonomic benefits and technical nuances...
March 8, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28284438/analysis-of-metallic-medical-devices-after-cremation-the-importance-in-identification
#12
Danilo De Angelis, Federica Collini, Enrico Muccino, Annalisa Cappella, Emanuela Sguazza, Alessandra Mazzucchi, Cristina Cattaneo
The recovery of a charred cadaver raises many issues concerning personal identification; the presence of prosthetic materials may provide very important and decisive information. Who is involved in the recovery of a charred body or of burnt human fragments, should therefore be able to recognize medical devices even if modified by fire effects. Metallic residues (585kg) that came from 2785 cremations were studied. Medical devices were then divided by type and material in order to esteem the representativeness of each typology...
March 2017: Science & Justice: Journal of the Forensic Science Society
https://www.readbyqxmd.com/read/28273575/a-recycled-environmental-friendly-flame-retardant-by-modifying-para-aramid-fiber-with-phosphorus-acid-for-thermoplastic-polyurethane-elastomer
#13
Xilei Chen, Wenduo Wang, Chuanmei Jiao
The application of fibers is more and more extensive, and the pollution caused by abandoned fibers is getting more serious, which has aroused wide attention. So it is necessary to find a way to solve the problem. In this paper, the para-aramid fiber (AF) was recycled and modified by phosphoric acid, and then was applied as environmental friendly flame retardant for thermoplastic polyurethane elastomer (TPU). The flame retardant properties of TPU were tested using cone calorimeter test (CCT) and thermogravimetric/Fourier transform infrared spectroscopy (TG-IR)...
February 24, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28255068/genomic-contraindications-for-heart-transplantation
#14
Danton S Char, Gabriel Lázaro-Muñoz, Aliessa Barnes, David Magnus, Michael J Deem, John D Lantos
Genome sequencing raises new ethical challenges. Decoding the genome produces new forms of diagnostic and prognostic information; however, the information is often difficult to interpret. The connection between most genetic variants and their phenotypic manifestations is not understood. This scenario is particularly true for disorders that are not associated with an autosomal genetic variant. The analytic uncertainty is compounded by moral uncertainty about how, exactly, the results of genomic testing should influence clinical decisions...
March 2, 2017: Pediatrics
https://www.readbyqxmd.com/read/28249180/release-of-hydrogen-sulfide-during-microwave-pyrolysis-of-sewage-sludge-effect-of-operating-parameters-and-mechanism
#15
Jun Zhang, Wei Zuo, Yu Tian, Linlin Yin, Zhenlong Gong, Jie Zhang
The effects of sludge characteristics, pyrolysis temperature, heating rate and catalysts on the release of H2S and mechanism of H2S formation during sludge pyrolysis were investigated in a microwave heating reactor (MHR). The evolution of sulfur-containing compounds in the pyrolysis chars obtained at temperature range of 400-800°C was characterized by XPS. For a given temperature, the maximum concentration of H2S appeared at moisture content of 80%. Compared to the influence of heating rate on the H2S yields, pyrolysis temperature and catalyst played a more significant role on the release of H2S during microwave pyrolysis process...
February 23, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28248122/-double-homicide-with-a%C3%A2-damning-bite-mark-on-the-offender%C3%A2-s%C3%A2-body-case-report
#16
Markéta Kulvajtová, Jiří Hladík, Lucie Zemančíková
The authors deal with a case of a double homicide, the parental murder made by their older son, which was committed by a combination of stabbing and cutting wounds. The perpetra-tor tried to hide the bodies, so he doused them with gasoline and set fire to them on a lonely forest road. Then he ran over the remains by his car. The cause of death was in both cases open wound of the neck - autopsy findings of the woman´s body testified for a blood aspi-ration, on the man´s body it was not clear for a partial charring, so the possibilities were blood aspiration, air embolism or external bleeding with haemorrhagic shock...
2017: Soudní Lékarství
https://www.readbyqxmd.com/read/28245943/electricity-production-and-benzene-removal-from-groundwater-using-low-cost-mini-tubular-microbial-fuel-cells-in-a-monitoring-well
#17
Shih-Hsien Chang, Chih-Hung Wu, Ruei-Cyun Wang, Chi-Wen Lin
A low-cost mini tubular microbial fuel cell (MFC) was developed for treating groundwater that contained benzene in monitoring wells. Experimental results indicate that increasing the length and density, and reducing the size of the char particles in the anode effectively reduced the internal resistance. Additionally, a thinner polyvinyl alcohol (PVA) hydrogel separator and PVA with a higher molecular weight improved electricity generation. The optimal parameters for the MFC were an anode density of 1.22 g cm(-3), a coke of 150 μm, an anode length of 6 cm, a PVA of 105,600 g mol(-1), and a separator thickness of 1 cm...
May 15, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28240321/selection-for-oil-content-during-soybean-domestication-revealed-by-x-ray-tomography-of-ancient-beans
#18
Yunbing Zong, Shengkun Yao, Gary W Crawford, Hui Fang, Jianfeng Lang, Jiadong Fan, Zhibin Sun, Yang Liu, Jianhua Zhang, Xiulan Duan, Guangzhao Zhou, Tiqiao Xiao, Fengshi Luan, Qing Wang, Xuexiang Chen, Huaidong Jiang
When and under what circumstances domestication related traits evolved in soybean (Glycine max) is not well understood. Seed size has been a focus of archaeological attention because increased soybean seed weight/size is a trait that distinguishes most modern soybeans from their ancestors; however, archaeological seed size analysis has had limited success. Modern domesticated soybean has a significantly higher oil content than its wild counterpart so oil content is potentially a source of new insight into soybean domestication...
February 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28236757/ex-situ-catalytic-pyrolysis-of-wastewater-sewage-sludge-a-micro-pyrolysis-study
#19
Kaige Wang, Yan Zheng, Xifeng Zhu, Catherine E Brewer, Robert C Brown
Concerns over increasing amounts of sewage sludge and unsustainability of current disposal methods have led to development of alternative routes for sludge management. The large amount of organics in sewage sludge makes it potential feedstock for energy or fuel production via thermochemical pathways. In this study, ex-situ catalytic pyrolysis using HZSM-5 catalyst was explored for the production of olefinic and aromatic hydrocarbons and nutrient-rich char from sewage sludge. The optimal pyrolysis and catalysis temperatures were found to be 500°C and 600°C, respectively...
February 7, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28236506/co-pyrolysis-characteristics-of-municipal-sewage-sludge-and-hazelnut-shell-by-tg-dtg-ms-and-residue-analysis
#20
Xinyang Xu, Bing Zhao, Manli Sun, Xi Chen, Mingchuan Zhang, Haibo Li, Shucong Xu
Co-pyrolysis characteristics of municipal sewage sludge and hazelnut shell blend have been studied in this work. The behavior of co-pyrolysis was researched by a method of multi-heating rates and different blend ratios to analyze thermal decomposition stages. The experimental data of the blended samples in TG-DTG plots were compared with calculated data to investigate the interactions during co-pyrolysis. The bio-chars investigated by SEM and FTIR spectra were used to examine the physical and chemical changes...
February 21, 2017: Waste Management
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