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重度主动脉瓣狭窄伴冠状动脉中度狭窄病人新型CT指标测量研究

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国际医学放射学杂志 2024年第05期 623-624页

作者： M.C.Langenbach I.L.Langenbach B.Foldyna V.Mauri K.Klein S.Macherey-meyer 苗彦许振华

目的冠状动脉疾病（CAD）常与严重主动脉瓣狭窄（AS）并存。经导管主动脉瓣置换术（TAVR）前行CT血管成像（CTA）虽可排除此类病人的CAD阻塞性病变，但对于

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Glucosamine supplementation during late gestation alters placental development and increases litter size

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作者： Stephenie meyer.

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作者： Stephenie meyer.

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作者： Stephenie meyer.

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Journal of Animal Science and Biotechnology 2018年第1期9卷 135-144页

作者： Jeffrey L.Vallet Jeremy R.Miles Bradley A.Freking Shane meyer USDA ARS U.S. Meat Animal Research Center (USMARQ P.O. Box 166 Clay Center NE Nebraska 68933 USA Plymouth Ag Group Diller NE Nebraska 68342 USA

Background： During late gestation the placental epithelial interface becomes highly folded, which involves changes in stromal hyaluronan. Hyaluronan is composed of glucoronate and N-acetyl-glucosamine. We hypothesized that supplementing gestating dams with glucosamine during this time would support placental folded-epithelial-bilayer development and increase litter size. In Exp. 1, gilts were unilaterally hysterectomizedovariectomized（UHO）. UHO gilts were mated and then supplemented daily with 10 g glucosamine（n = 16） or glucose（control, n = 17） from d 85 of gestation until slaughter（d 105）. At slaughter, the number of live fetuses was recorded and each live fetus and its placenta was weighed. Uterine wall samples adjacent to the largest and smallest fetuses within each litter were processed for histology. In Exp. 2, pregnant sows in a commercial sow farm were supplemented with either 10 g glucosamine or glucose daily from d 85 of gestation to farrowing. Total piglets born and born alive were recorded for each litter. In Exp. 3, the same commercial farm and same protocol were used except that the dose of glucosamine and glucose was doubled to 20 g/***： In Exp. 1, the number of live fetuses tended to be greater in glucosamine-treated UHO gilts（P = 0.098）.Placental morphometry indicated that the width of the folded bilayer was greater（P = 0.05） in glucosamine-treated gilts. In Exp. 2, litter size did not differ between glucosamine-and glucose-treated sows. However in Exp. 3, the increased dose of glucosamine resulted in a significant treatment by parity interaction（P ≤ 0.01）, in which total piglets born and born alive were greater in glucosamine treated sows of later parity（5 and 6）.Conclusions： These results indicated that glucosamine supplementation increased the width of the folds of the placental bilayer and increased litter size in later parity, intact pregnant commercial sows.

关键词： Fructose Glucosamine Hyaluronan Swine Uterine capacity

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Differential treatment and early outcome in the interventional endoscopic management of pancreatic pseudocysts in 27 patients

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World Journal of Gastroenterology 2006年第26期12卷 4175-4178页

作者： Uwe Will Conrad Wegener Kai-Ivo Graf Igor Wanzar Thomas Manger Frank meyer Department of Gastroenterology Municipal Hospital D-07548 GeraGermany Department of Surgery Municipal Hospital D-07548 GeraGermany Department of Surgery University Hospital D-39120 MagdeburgGermany

AIM： Pancreatic pseudocysts （PPC） as a complication of pancreatitis are approached only in the case of abdominal pain, infection, bleeding, and compression onto the gastrointestinal tract or biliary tree. METHODS： From 02/01/2002 to 05/31/2004, all con- secutive patients with symptomatic PPC who underwent an interventional endoscopic approach were evaluated in this pilot case-series study： Group （Gr.） Ⅰ-Primary percutaneous （external）, ultrasound-guided drainage. Gr. Ⅱ- Primary EUS-guided cystogastrostomy. Gr. Ⅲ-EUS-guided cystogastrostomy including intracystic necrosectomy. RESULTS：（=＂follow up＂： n = 27）： Gr. Ⅰ （n = 9; 33.3%）： No complaints （n = 3）; change of an external into an internal drainage （n = 4）; complications：（a） bleeding （n = 1） followed by 3 d at ICU, discharge after 40 d; （b） septic shock （n = 1） followed by ICU and several laparotomies for programmed lavage and necrosectomy, death after 74 d. Gr. Ⅱ （n = 13; 48.1%）： No complaints （n = 11）; external drainage （n = 2）; complications/problems out of the 13 cases： 2nd separate pseudocyst （n = 1） with external drainage （since no communication with primary internal drainage）; infection of the residual cyst （n = 1）＋ following external drainage; spontaneous PPC perforation （n = 1）＋ following closure of the opening of the cystogastrostomy using clips and subsequently ICU for 2 d. Gr. Ⅲ （n = 5; 18.5%）： No complaints in all patients, in average two endoscopic procedures required （range, 2-6）. CONCLUSION： Interventional endoscopic management of pancreatic pseudocysts is a reasonable alternative treatment option with low invasiveness compared to surgery and an acceptable outcome with regard to the complication rate （11.1%） and mortality （3.7%）, as shown by these initial study results.

关键词： Pancreatic pseudocyst Pancreatitis Interventional endoscopic approach

Chemical storage of hydrogen in synthetic liquid fuels:building block for CO_(2)-neutral mobility

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Clean Energy 2021年第2期5卷 180-186页

作者： R.P.Lee L.G.Seidl B.meyer Iinstitute of energy process engineering and chemical engineering tu bergakademie freibergfuchsmuehlenweg 9d09599 freiberggermany fraunhofer institute for microstructure of materials and systems imws branch lab freiberg—circular carbon technologiesfuchsmuehlenweg 9d09599 freiberggermany

Green hydrogen is anticipated to play a major role in the decarbonization of the mobility *** chemical storage in CO_(2)-neutral synthetic liquid fuels is advantageous in terms of safety and reliability compared to other hydrogen storage developments,and thus represents a complementary building block to developments in electric and hydrogen mobility for the low-carbon transition in the mobility *** development is especially relevant for transport sectors which will have no alternatives to liquid fuels in the foreseeable *** this paper,three alternative technological routes for the chemical storage of hydrogen in CO_(2)-neutral synthetic liquid fuels are identified and comparatively evaluated in terms of feedstock potential,product potential,demand for renewable electricity and associated costs,efficiency as well as expected market *** all three routes exhibited similar levels of overall efficiencies,electricity-based liquid fuels in Germany are currently limited by the high cost and limited supply of renewable *** contrast,liquid fuels generated from biogenic waste have a constant supply of biogenic feedstock and are largely independent from the supply and cost of renewable electricity.

关键词： CO_(2)-neutral synthetic liquid fuels renewable hydrogen chemical storage waste-to-fuels electricity-based fuels circular carbon technologies

Investigation of different pre-treatments of chromium leather shavings to improve biogas production

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Journal of Leather Science and Engineering 2020年第1期2卷 146-159页

作者： Carolina Scaraffuni Gomes Jens-Uwe Repke Michael meyer Forschungsinstitut für Leder und Kunststoffbahnen(FILK)gGmbH MeiBner Ring 1-509599 FreibergGermany Dynamik und Betrieb technischer Anlagen TU BerlinStraße des 17.Juni 13510623 BerlinGermany

Chromium shavings are wet by-products of the leather industry,of which thousands of tons accrue worldwide during leather *** to their chromium content,chromium shavings are responsible for the most important ecological challenges caused by the leather *** are stable towards temperatures of up to 110°C and enzymatic *** high stability is caused by the three-dimensional native structure,typical for collagen,and additional chemical cross-links between the collagen fibres achieved by Cr3+salts in the tanning ***,hitherto chromium shavings are not utilized industrially to produce *** order to generate biogas,this stable structure has to be *** shavings were pre-treated by extrusion and hydrothermal *** prove the enzymatic degradability,the different pre-treatments were evaluated by differential scanning calorimetry(DSC),enzymatic assays,and by measuring the solubility in *** biogas production potential was investigated using batch trials to examine *** demonstrated that both pretreatments allowed enzymatic attack and increased degradability of the chromium shavings reducing the lag-phase of biogas production and the remaining waste.

关键词： Biogas production Anaerobic digestion Chromium shavings Extrusion Hydrothermal treatment

Botanicals and plant strengtheners for potato and tomato cultivation in Africa

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Journal of Integrative Agriculture 2020年第2期19卷 406-427页

作者： Tewodros MULUGETA Jean-Baptiste MUHINYUZA Reinette GOUWS-meyer Lerato MATSAUNYANE Erik ANDREASSON Erik ALEXANDERSSON Department of Zoological Sciences Addis Ababa UniversityAddis Ababa 1000Ethiopia Department of Biology Kotebe Metropolitan UniversityAddis Ababa 1000Ethiopia College of Agriculture Animal Science and Veterinary Medicine(UR-CAVM)Busogo CampusUniversity of RwandaMusanze 210Rwanda Department of Crop Sciences Tshwane University of TechnologyPretoria 0183South Africa Department of Plant Breeding Agricultural Research Council-Vegetable and Ornamental PlantsPretoria 0001South Africa Department of Plant Protection Biology Swedish University of Agricultural Sciences(SLU)Alnarp SE-23053Sweden

This review provides a summary of botanicals and plant strengtheners that have potential uses for disease and pest management in potato and tomato cultivation in *** discuss their possible use to prevent major diseases and pests which infest potato and tomato,such as early and late blight,bacterial wilt,potato tuber moth,and tomato *** are several examples of the successful uses of botanicals for pathogen and pest control relevant for different African climatic conditions;however,most of these studies have been conducted in vitro and often lack field *** strengtheners(substances that induce and improve crop resistance,yield,and quality)are little studied and used in Africa in comparison to North America and *** possible benefits of using botanicals and plant strengtheners instead of conventional pesticides are discussed here in relation to human health and the environment as well as their modes of action and accessibility to *** of knowledge of the composition and active ingredients of extracts,environmental concerns,uncertainties regarding stability and formulation,lack of legislation and limited support from governments,hamper the development of botanicals and plant strengtheners for use in sustainable African agriculture.

关键词： African agriculture botanicals crop protection pathogen plant strengtheners pesticide pests diseases potato tomato

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