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218篇 您的检索式:作者名="Stany"
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1Development tendencies of moulding and core sands显示文摘Further development of the technology for making moulding and core sands will be strictly limited by tough requirements due to protection of the natural environment. These tendencies are becoming more and more tense, so that we will reach a point when even processes, that from technological point of view fulfill high requirements of the foundry industry, must be replaced by more ecologically-friendly solutions. Hence, technologies using synthetic resins as binding materials will be limited. This paper presents some predictable development tendencies of moulding and core sands. The increasing role of inorganic substances will be noticed, including silicate binders with significantly improved properties, such as improved knock-out property or higher reclamation strength. Other interesting solutions might also be moulding sands bonded by geo-polymers and phosphate binders or salts and also binders based on degradable biopolymers. These tendencies and the usefulness of these binders are put forward in this paper.Stanisaw M.Dobosz Petr Jelinek Katarzyna Major-Gabry 2011China Foundry2011,8,4:11
2Hormonal protection in acute pancreatitis by ghrelin, leptin and melatonin显示文摘Acute pancreatitis is a nonbacterial disease of the pancreas.The severe form of this ailment is characterized by high mortality.Whether acute pancreatitis develops as the severe type or resolves depends on the intensity of the inflammatory process which is counteracted by the recruitment of innate defense mechanisms.It has been shown that the hormones ghrelin,leptin and melatonin are able to modulate the immune function of the organism and to protect the pancreas against inflammatory damage.Experimental studies have demonstrated that the application of these substances prior to the induction of acute pancreatitis significantly attenuated the intensity of the inflammation and reduced pancreatic tissue damage.The pancreatic protective mechanisms of the above hormones have been related to the mobilization of non-specific immune defense,to the inhibition of nuclear factor kappa B and modulation of cytokine production,to the stimulation of heat shock proteins and changes of apoptotic processes in the acinar cells,as well as to the activation of antioxidant system of the pancreatic tissue.The protective effect ofghrelin seems to be indirect and perhaps dependent on the release of growth hormone and insulin-like growth factor 1.Leptin and ghrelin,but not melatonin,employ sensory nerves in their beneficial action on acute pancreatitis.It is very likely that ghrelin,leptin and melatonin could be implicated in the natural protection of the pancreatic gland against inflammatory damage because the blood levels of these substances increase in the initial phase of pancreatic inflammation.The above hormones could be a part of the innate resistance system which might remove noxious factors and could suppress or attenuate the inflammatory process in the pancreas.Jolanta Jaworek Stanis?aw Jan Konturek 2014World Journal of Gastroenterology2014,20,45:10
3Ghrelin and gastrin in advanced gastric cancer before and after gastrectomy显示文摘AIM: To investigate plasma ghrelin, gastrin and growth hormone secretagogue receptor (GHS-R) expression in advanced gastric cancer (GC) before and after resection. METHODS: Seventy subjects in whom endoscopy of the upper gastrointestinal tract was performed in the Department of General Surgery at Cracow University during the past decade: (1) 25 patients with GC associated with Helicobacter pylori (H. pylori) infection; (2) 10 patients with GC 4-5 years after (total or subtotal) gastrectomy; (3) 25 healthy H. pylori-negative controls, matched by age and BMI to the above two groups; and (4) 10 GC patients 4-5 years after total gastrectomy. Ghrelin and gastrin plasma concentrations were measured by specific radioimmunoassay under fasting conditions and postprandially at 60 and 90 min after ingestion of a mixed meal. GHS-R expression was examined in biopsy samples from intact healthy mucosa and GC tissue using semi-quantitative reverse transcription-polymerase chain reaction. RESULTS: In healthy controls, fasting plasma ghrelin levels were significantly elevated and declined markedly at 60 and 90 min after a mixed meal. The concomitant enhanced ghrelin, GHS-R and gastrin expression in GC tissue over that recorded in intact mucosa, and the marked rise in plasma gastrin in these subjects under fasting conditions indicate the role of these hormonal factors in GC formation. Fasting plasma levels and postprandial response of ghrelin and gastrin appear to be inversely correlated in healthy subjects. Feeding in the controls resulted in a significant fall in plasma ghrelin with a subsequent rise in plasma gastrin, but in H. pylori-positive GC patients submitted to total or distal gastrectomy, feeding failed to affect significantly the fall in plasma ghrelin that was recorded in these patients before surgery. Fasting ghrelin concentrations were significantly lower in patients 4-5 years after total gastrectomy compared to those in healthy controls and to these in GC patients before surgery. CONCLUSION: Elevated plasma gastrin and suppression of fasting ghrelin in patients with GC suggest the existence of a close relationship between these two hormones in gastric carcinogenesis.Anna Zub-Pokrowiecka Kazimierz Rembiasz Peter C Konturek Andrzej Budzyński Stanisaw J Konturek Marek Winiarski Wadysaw Bielański 2011World Journal of Gastroenterology2011,17,4:7
4圆筒实验数据研究高能炸药的爆轰特性(英文)显示文摘根据圆筒实验数据,采用新方法计算了HMX、RDX、PETN、TNT等炸药的爆轰能,研究了爆轰产物的加速能力,并与CHEETAH的计算结果进行了对比。通过爆轰波在柱壳水介质中传播的圆筒实验方法,预估了炸药的爆压。利用实验和热化学计算的结果推导了JWL状态方程的待定常数,并依据JWL等熵线计算了做功能力。Waldemar A Trzciński Stanisaw Cudzio 2006含能材料2006,14,1:6
5Accurate measurement of aerosol optical properties using the multilongitudinal mode high-spectral-resolution lidar with self-tuning Mach-Zehnder interferometer显示文摘The multilongitudinal mode[MLM]high-spectral-resolution lidar[HSRL]based on the Mach±Zehnder interferometer[MZI]is constructed in Xi’an for accurate measurements of aerosol optical properties.The critical requirement of the optimal match between the free spectral range of MZI and the longitudinal mode interval of the MLM laser is influenced by the laboratory temperature,pressure,and vibration.To realize the optimal separation of aerosol Mie scattering signals and molecular Rayleigh scattering signals excited by the MLM laser,a self-tuning technique to dynamically adjust the optical path difference[OPD]of the MZI is proposed,which utilizes the maximum ratio between the received power of the Mie channel and Rayleigh channel as the criterion of the OPD displacement.The preliminary experiments show the feasibility of the MLM-HSRL with self-tuning MZI and the stable performance in the separation of aerosol Mie scattering signals and molecular Rayleigh scattering signals.高飞 高丰佳 杨潇 李改盼 杨帆 李仕春 汪丽 华灯鑫 Samo Stanič 2023Chinese Optics Letters2023,21,3:3
6Influence of longwall gateroad convergence on the process of mine ventilation network-model tests显示文摘Hard coal mines are required to constantly ventilate mine workings to ensure that the air composition is at a certain humidity and temperature level that is comfortable for underground mine workers,especially in deep deposits.All underground workings,which are part of the mine ventilation network,should be ventilated in a way that allows maintaining proper oxygen concentration not lower than 19%(by volume),and limits concentration of gases in the air such as methane,carbon monoxide or carbon dioxide.The air flow in the mine ventilation network may be disturbed due to the natural convergence(deformation)and lead to change in its original cross-section.Reducing the cross-sectional area of the mining excavation causes local resistances in the air flow and changes in aerodynamic potentials,which leads to emergency states in the mine ventilation network.This paper presents the results of numerical simulations of the influence of gateroad convergence on the ventilation process of a selected part of the mine ventilation network.The gateroad convergence was modelled with the finite element software PHASE 2.The influence of changes in the cross-sectional area of the gateroad on the ventilation process was carried out using the computational fluid dynamics software Ansys-Fluent.Andrzej Walentek Tomasz Janoszek Stanis?aw Prusek Aleksander Wrana 2019International Journal of Mining Science and Technology2019,29,4:2
7The pervasive effects of lighting environments on sensory drive in bluefin killifish: an investigation into male/male competition, female choice, and predation显示文摘Lisa D. MITCHEM Shannon STANIS Nicholas M. SUTTON Zachary TURNER Rebecca C. FULLER 2018Current Zoology2018,64,4:2
8Pharmacological prevention of sevoflurane and desflurane related emergence agitation in children: a meta-analysis of published studies显示文摘Dahmani S Stany I 2010British Journal of An- aesthesia2010,104,2:1
9Five-year Follow-up of a Randomized Clinical Trial of Total Thyroidectomy versus Dunhill Operation versus Bilateral Subtotal Thyroidectomy for Multinodular Nontoxic Goiter显示文摘Marcin Barczyński Aleksander Konturek Alicja Hubalewska-Dydejczyk Filip Go?kowski Stanis?aw Cichoń Wojciech Nowak 2010World Journal of Surgery2010,,6:1
10Phase I study of escalating doses of oxaliplatin in combination wth fixed dose gemcitabine in patients with non-small cell lung cancer显示文摘Bidoli P Stani SC Mariani L 2004Lung Cancer2004,43,2:1
11Ten-year suvival with chemotherapy and radiotherapy in patients with squamous cell carcinoma of the esophagus显示文摘Bidoli P Bajetta E Stani S C 2002Cancer2002,94,2:1
12Synthesis of antimicrobial monophase silver-doped hydroxyapatite nanopowders for bone tissue engineering显示文摘STANI(C) V JANA(C)KOVI(C) D DIMITRIJEVI(C) S 0,,09:1
13The use of acellular dermal allograft for vulvovaginal reconstruction 显示文摘Stany MP Sunde J Bidus MA 2010Int J Gynecol Cancer2010,20,6:1
14The correlation between pro- and anti-in- flammatory cytokines in chronic subdural hematoma patients as- sessed with factor analysis 显示文摘Pripp AH Stani i M 2014PLoS One2014,9,90:1
15The use of acellular dermal graft for vulvovaginal reconstruction in a patient with lichen planus显示文摘STANY M P WINTER W E ELKAS J C 2005Obstet Gynecol2005,105,52:1
16Geochemical distribution of trace elements in Kaffioyra and Longyearbyen coals, Spitsbergen, Norway显示文摘Lucyna Lewińska-Preis Monika J. Fabiańska Stanis?aw ?miel Andrzej Kita 2009International Journal of Coal Geology2009,,3:1
17Crowding and experience-use history:A study of the moderating effect of place attachment among water-based recreationists显示文摘Megha Budruk Sonja A Wilhem Stanis 2008Environmental Management2008,41,10:1
18Geochemical distribution of trace elements in Kaffioyra and Longyearbyen coals, Spitsbergen, Norway显示文摘Lucyna Lewińska-Preis Monika J. Fabiańska Stanis?aw ?miel Andrzej Kita 2009International Journal of Coal Geology2009,,3:1
19Reduced sensitivity to sterol inhibiting fungicides in field isolates of Venturia inaequalis显示文摘STANIS V F JONOS A L 1985Phytopathol1985,75,10:1
20Develop- ment of mesoporosity in activated carbons via coal modification using Ca^2+ and Fe^3+ ex-change显示文摘EWA LORENC-GRABOWSKA GRA-ZYNA GRY- GLEWICZ STANIS LAW GRYGLEWICZ 2004Mi- croporous and Mesoporous Materials2004,76,13:1
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