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https://www.readbyqxmd.com/read/29123896/superior-mesenteric-artery-syndrome-leading-to-reversible-mucosal-gangrene
#1
Satomi Uemura, Kei Suzuki, Naoyuki Katayama, Hiroshi Imai
We describe a case in which gastrointestinal distention due to superior mesenteric artery syndrome (SMAS) developed into membranous gangrene, which in turn led to septic shock in a 60-year-old woman with cerebral palsy and cachexia. The association with SMAS and septic shock is considered extremely rare, it is important to consider this combination especially in cachectic patients with gastric distension accompanying refractory shock unknown etiology.
July 2017: Acute Medicine & Surgery
https://www.readbyqxmd.com/read/29112393/ring-fusion-of-perylene-diimide-acceptor-enabling-efficient-nonfullerene-organic-solar-cells-with-a-small-voltage-loss
#2
Jianquan Zhang, Yunke Li, Jiachen Huang, Huawei Hu, Guangye Zhang, Tingxuan Ma, Philip C Y Chow, Harald Ade, Ding Pan, He Yan
We report a novel small molecule acceptor (SMA) named FTTB-PDI4 obtained via ring-fusion between the thiophene and perylene diimide (PDI) units of a PDI-tetramer with a tetrathienylbezene (TTB) core. A small voltage loss of 0.53 V and a high power conversion efficiency of 10.58% were achieved, which is the highest value reported for PDI-based devices to date. By comparing the fused and nonfused SMAs, we show that the ring-fusion introduces several beneficial effects on the properties and performances of the acceptor material, including more favorable energy levels, enhanced light absorption and stronger intermolecular packing...
November 15, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29109802/effect-of-ta-additions-on-the-microstructure-damping-and-shape-memory-behaviour-of-prealloyed-cu-al-ni-shape-memory-alloys
#3
Safaa N Saud, E Hamzah, H R Bakhsheshi-Rad, T Abubakar
The influence of Ta additions on the microstructure and properties of Cu-Al-Ni shape memory alloys was investigated in this paper. The addition of Ta significantly affects the green and porosity densities; the minimum percentage of porosity was observed with the modified prealloyed Cu-Al-Ni-2.0 wt.% Ta. The phase transformation temperatures were shifted towards the highest values after Ta was added. Based on the damping capacity results, the alloy of Cu-Al-Ni-3.0 wt.% Ta has very high internal friction with the maximum equivalent internal friction value twice as high as that of the prealloyed Cu-Al-Ni SMA...
2017: Scanning
https://www.readbyqxmd.com/read/29099790/design-of-uav-embedded-microphone-array-system-for-sound-source-localization-in-outdoor-environments
#4
Kotaro Hoshiba, Kai Washizaki, Mizuho Wakabayashi, Takahiro Ishiki, Makoto Kumon, Yoshiaki Bando, Daniel Gabriel, Kazuhiro Nakadai, Hiroshi G Okuno
In search and rescue activities, unmanned aerial vehicles (UAV) should exploit sound information to compensate for poor visual information. This paper describes the design and implementation of a UAV-embedded microphone array system for sound source localization in outdoor environments. Four critical development problems included water-resistance of the microphone array, efficiency in assembling, reliability of wireless communication, and sufficiency of visualization tools for operators. To solve these problems, we developed a spherical microphone array system (SMAS) consisting of a microphone array, a stable wireless network communication system, and intuitive visualization tools...
November 3, 2017: Sensors
https://www.readbyqxmd.com/read/29095193/the-effectiveness-of-sternocleidomastoid-flap-versus-superficial-musculoaponeurotic-system-flap-for-the-prevention-of-frey-syndrome-and-facial-depressed-deformity-in-parotid-surgery-for-pleomorphic-adenoma
#5
Marco Manola, Luca Moscillo, Vittorio Simeon, Elena De Luca, Americo Mastella
The purpose of this study was to compare 2 types of reconstruction techniques: sternocleidomastoid (SCM) flap and superficial musculoaponeurotic system (SMAS) flap after partial parotidectomy (PP) for preventing Frey syndrome (FS) and concave facial depressed deformity. A total of 99 patients underwent PP for pleomorphic adenoma of the parotid gland. The patients were divided in 2 groups according to the dimension of the tumor: tumors less than 3 cm (group A, 47 patients) and tumors greater than or equal to 3 cm (group B, 52 patients)...
October 31, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29095027/the-two-sides-of-superior-mesenteric-artery-syndrome-treatment-conservative-or-surgical-management
#6
Elvia Johanna Osegueda de Rodríguez, Antonio Carlos Hernández-Villegas, Aurora Elizabeth Serralde-Zúñiga, Ana Luz Del Carmen Reyes-Ramírez
INTRODUCTION: Superior mesenteric artery syndrome (SMAS) is a rare condition characterized by vascular compression of the duodenum. There is controversy regarding the optimal treatment. CASE REPORT: In case 1, we describe the case of a 21-year-old woman (body mass index -BMI- 16.9 kg/m2) with high-level obstructive symptoms three months prior, with computed tomography scan (TC) showing a superior mesenteric artery aorta angle (SMAA) of 13º and compression of the third portion of the duodenum (D3), for this reason a nasojejunal tube was placed for enteral feeding...
July 28, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/29093450/rapid-characterization-of-local-shape-memory-properties-through-indentation
#7
Peizhen Li, Haluk E Karaca, Yang-Tse Cheng
Shape memory alloys (SMAs) have the ability to show large recoverable shape changes upon temperature, stress or magnetic field cycling. Their shape memory, material and magnetic properties (e.g. transformation temperatures, strain, saturation magnetization and strength) determine their prospects for applications from small-scale microelectromechanical systems to large scale aerospace and biomedical systems. It should be noted that properties of SMAs are highly temperature dependent. Generally, the conventional mechanical characterization methods (e...
November 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29084189/-multiorgan-malfunction-after-fontan-operation-in-adult-patients
#8
Monika Smaś-Suska, Paweł Iwaszczuk, Beata Róg, Piotr Weryński, Maria Olszowska, Piotr Podolec, Lidia Tomkiewicz-Pająk
Although 85% of patients with univentricular heart after Fontan procedure survive twenty years after operation, the procedure alone seems to be an inadequate treatment as a permanent clinical solution. Patients with a "Fontan physiology" additionally have to face a various extra-cardiac complications, including thyroid, liver and kidney dysfunction, which are not only potentially life-threatening, but also can potentiate the circulatory insufficiency. AIM: The aim of the study was to assess a multiorgan dysfunction in adult patients after Fontan operation in long term follow-up and compare to healthy controls...
October 23, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29084187/-evaluation-of-the-clinical-suitability-of-automated-left-ventricle-s-fraction-and-volume-measurements-in-3-dimensional-echocardiography-compared-to-values-obtained-in-magnetic-resonance-imaging-pilot-study
#9
Agnieszka Żygadło, Magdalena Kaźnica-Wiatr, Justyna Błaut-Jurkowska, Klaudia Knap, Aleksandra Lenart-Migdalska, Monika Smaś-Suska, Maciej Skubera, Małgorzata Urbańczyk-Zawadzka, Piotr Podolec, Maria Olszowska
Recently a lot of authors have been trying to determine the usefulness of 3-dimensional echocardiography (TTE 3D) in evaluation of ejection fraction and left ventricular volume, but few attempt to compare it to the current gold standard of cardiac magnetic resonance (CMR). 3D imaging technics allows to avoid errors caused by geometry of the heart chambers and foreshortened views. American Echocardiographic Guidelines recommend the use of 3-dimensional echocardiography in daily clinical practice. AIM: The aim of the study was to establish clinical usefulness of automated 3D TTE software to calculate left ventricle ejection fraction (LVEF), left ventricle end diastolic volume (LVEDV) and left ventricle end systolic volume (LVESV), and to compare those measurements calculated in CMR and in 3D TTE...
October 23, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29075927/effects-of-the-concentration-of-digestive-surgical-operations-in-regional-japan
#10
Takefumi Kitazawa, Kunichika Matsumoto, Shigeru Fujita, Kanako Seto, Yinghui Wu, Takayoshi Nagahama, Tomonori Hasegawa
PURPOSE: The purpose of this study was to investigate the relationship between the concentration of digestive system surgery and outcomes at a regional level in Japan, using time-series data. METHODS: We used nationwide data from 2008 to 2013, and analyzed the ten most common surgical procedures. The unit of analysis was secondary medical areas (SMAs), which cover several municipalities and provide medical services for common diseases. The concentration of surgery in these areas was measured using the Herfindahl-Hirschman Index (HHI) and the relationship between the concentration of surgery and length of stay in hospital (LOS) was analyzed, in accordance with surgical difficulty...
October 26, 2017: Surgery Today
https://www.readbyqxmd.com/read/29058360/design-of-a-new-small-molecule-electron-acceptor-enables-efficient-polymer-solar-cells-with-high-fill-factor
#11
Sunsun Li, Long Ye, Wenchao Zhao, Xiaoyu Liu, Jie Zhu, Harald Ade, Jianhui Hou
Improving the fill factor (FF) is known as a challenging issue in organic solar cells (OSCs). Herein, a strategy of extending the conjugated area of end-group is proposed for the molecular design of acceptor-donor-acceptor (A-D-A)-type small molecule acceptor (SMA), and an indaceno[1,2-b:5,6-b']dithiophene-based SMA, namely IDTN, by end-capping with the naphthyl fused 2-(3-oxocyclopentylidene)malononitrile is synthesized. Benefiting from the π-conjugation extension by fusing two phenyls, IDTN shows stronger molecular aggregation, more ordered packing structure, thus over one order of magnitude higher electron mobility relative to its counterpart...
October 23, 2017: Advanced Materials
https://www.readbyqxmd.com/read/29056084/acculturation-and-severity-of-depression-among-first-generation-vietnamese-outpatients-in-germany
#12
Main Huong Nguyen, Eric Hahn, Katja Wingenfeld, Iris T Graef-Calliess, Anita von Poser, Malte Stopsack, Hannah Burian, Annegret Dreher, Simon Wolf, Michael Dettling, Ronald Burian, Albert Diefenbacher, Thi Minh Tam Ta
BACKGROUND: Challenges of migration, particularly concerning the process of acculturation are associated with an increased risk of mental illness. Vietnamese migrants constitute the largest Southeast Asian migrant group in Germany, yet there is no data on the relationship between the mental health status and acculturation among this population. AIMS: Therefore, the present study examines the relationship between two well-established dimensions of acculturation, that is, dominant society immersion (DSI) and ethnic society immersion (ESI), the four resulting acculturation strategies (integration, assimilation, separation and marginalization), and severity of depression...
October 1, 2017: International Journal of Social Psychiatry
https://www.readbyqxmd.com/read/29046662/shared-medical-appointments-may-be-effective-for-improving-clinical-and-behavioral-outcomes-in-type-2-diabetes-a-narrative-review
#13
REVIEW
Kirthi Menon, Aya Mousa, Maximilian Pj de Courten, Georgia Soldatos, Garry Egger, Barbora de Courten
Type 2 diabetes mellitus (T2DM) is a complex chronic disease affecting over 400 million people worldwide. Managing T2DM and its associated complications in individual patient consultations poses substantial challenges to physicians due to limited time and resources and lack of access to multidisciplinary teams. Shared medical appointments (SMAs) are consecutive medical consultations provided by a physician in a group setting, where integrated medical care and patient education are delivered in a single session...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29038048/the-influence-of-doca-salt-hypertension-and-chronic-administration-of-the-faah-inhibitor-urb597-on-kca2-3-kca3-1-edh-type-relaxation-in-rat-small-mesenteric-arteries
#14
Monika Kloza, Marta Baranowska-Kuczko, Barbara Malinowska, Olga Karpińska, Ewa Harasim-Symbor, Irena Kasacka, Hanna Kozłowska
The aim of this study was to examine the influence of deoxycorticosterone acetate-salt (DOCA-salt) hypertension and chronic treatment with the fatty acid amide hydrolase inhibitor, URB597, on small and intermediate conductance calcium-activated potassium channels and endothelium-dependent hyperpolarization (KCa2.3/KCa3.1-EDH) in rat small mesenteric arteries (sMAs). The EDH-type response was investigated, in endothelium-intact sMAs using a wire myograph, by examining acetylcholine-evoked vasorelaxation in the presence of N(ω)-nitro-L-arginine methyl ester and indomethacin (inhibitors of nitric oxide synthase and cyclooxygenase, respectively)...
October 14, 2017: Vascular Pharmacology
https://www.readbyqxmd.com/read/28989263/modeling-and-characterization-of-shape-memory-alloy-springs-with-water-cooling-strategy-in-a-neurosurgical-robot
#15
Shing Shin Cheng, Yeongjin Kim, Jaydev P Desai
Since shape memory alloy (SMA) has high power density and is magnetic resonance imaging (MRI) compatible, it has been chosen as the actuator for the meso-scale minimally invasive neurosurgical intracranial robot (MINIR-II) that is envisioned to be operated under continuous MRI guidance. We have devised a water cooling strategy to improve its actuation frequency by threading a silicone tube through the spring coils to form a compact cooling module-integrated actuator. To create active bi-directional motion in each robot joint, we configured the SMA springs in an antagonistic way...
September 2017: Journal of Intelligent Material Systems and Structures
https://www.readbyqxmd.com/read/28974518/involvement-of-connexin-43-phosphorylation-and-gap-junctional-communication-between-smooth-muscle-cells-in-vasopressin-induced-rock-dependent-vasoconstriction-after-hemorrhagic-shock
#16
Guangming Yang, Xiaoyong Peng, Yue Wu, Tao Li, Liangming Liu
We examined the roles played by gap junctions (GJs) and the GJ channel protein connexin 43 (Cx43) in arginine vasopressin (AVP)-induced vasoconstriction after hemorrhagic shock and their relationship to Rho kinase (ROCK) and protein kinase C (PKC). The results showed that AVP induced an endothelium-independent contraction in rat superior mesenteric arteries (SMAs). Blocking the GJs significantly decreased the contractile response of SMAs and vascular smooth muscle cells (VSMCs) to AVP after shock and hypoxia...
October 1, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/28964628/structural-connectome-alterations-in-prodromal-and-de-novo-parkinson-s-disease-patients
#17
Ming-Ching Wen, Hannah S E Heng, Jung-Lung Hsu, Zheyu Xu, Gerald M Liew, Wing Lok Au, Ling Ling Chan, Louis C S Tan, Eng King Tan
BACKGROUND: Although the clinical signs of prodromal Parkinson's disease (PD) have been identified, little is known about the neural features of the prodromal phase of PD (proPD). The aim of this study was to examine the structural network alterations from healthy aging to proPD and to early PD. METHODS: 181 non-demented and non-depressed participants comprising 55 healthy controls (HCs), 20 proPDs, and 106 de novo PD patients (dPDs) were included in the study and underwent clinical assessment and diffusion tensor imaging scanning...
September 21, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28927806/-aging-prevention-new-surgical-techniques-and-future-options-for-facial-rejuvenation
#18
C Le Louarn
Prevention of aging is mainly obtained through appropriate health practices, modulated by the genetic causes of aging. Causes of facial structural aging include gravity, volume loss, contraction of the mimic muscles and obviously biological aging of tissues. Among the very numerous new surgical technique of facial rejuvenation, we could point out: for the frontal region, obviously we are focus on the endoscopic and non-endoscopic frontal lifts. But also, we should note the transcutaneous Brow Shaping which with a well defined, step by step technique is indeed a simple way to improve a possible difficult situation; concerning the mid-face lift, as the main risk is the secondary eyelid malposition, a high Smas or a temporo-malar lift can be performed...
October 2017: Annales de Chirurgie Plastique et Esthétique
https://www.readbyqxmd.com/read/28893423/-incisions-and-baseline-operative-technique-of-cervicofacial-lifting
#19
F Boucher, S Guerid, E Delay
Cervicofacial lifting is one of the most iconic procedure of plastic surgery and is about hundred years old. In the following chapters of this report, numerous technical points will be specify. A baseline reliable and reproducible technique, appealing to the largest possible audience is presented in order to begin this surgery in optimum conditions. Pre- and postoperative management is also exposed. The aim of this chapter is to precise incisions and baseline operative technique of cervicofacial lifting, with description of SMAS and platysma suspensions as well as complementary procedures like liposuccion and lipofilling...
October 2017: Annales de Chirurgie Plastique et Esthétique
https://www.readbyqxmd.com/read/28882475/-use-of-harmonic-blade-in-face-lifting
#20
F Firmin, P-L Vincent
INTRODUCTION: Rapid recovery and return to social activities are what every patient wishes when considering to undergo a face lifting procedure. In our practice, the use of the Harmonic scalpel in order to achieve this goal has greatly improved the postoperative period. PATIENTS AND METHODS: We have performed 920 face lifting procedures exclusively using the Harmonic scalpel from 2001 to May 2017. RESULTS: A retrospective chart review was performed...
October 2017: Annales de Chirurgie Plastique et Esthétique
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