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| 1 | OPTICAL PROPERTIES OF GeO_2 AND Ge NANOCRYSTALS显示文摘he co m pound m aterial of n m size particles Ge O2 Si O2 w as synthesied through hydrolysis of Si( O C2 H4) and Ge Cl4 . A heat treatm ent w as carried out for the sa m ples at 100 ~1200 ℃in air . Its optical property w as deter mined by U V Vis spectur m . We have found that theabsorption edge of spectru m shifted progressively to longer w avelengths . The quantu m size ef fect of nanocrystals appears because crystals gro w and energy of optical band gap reduces d ueto the influence of te m perature . By the analysis of X ray diffraction w e have observed theprocess in w hich the structure of particles changed fro m disorder into order . | Y.H.Zhou 1) ,Y.Y.Feng 2) and H.Y.Lu 2) 1)Department of Physics Nanjing Normal University, Nanjing 210097,China 2)Physics and Ch寁O P T I C A L P R O P E R T I E S O F Ge O2 A N D Ge N A N O C R Y S T A L S Y. H. Zhou1) , Y. Y. Feng2) | 1999 | Acta Metallurgica Sinica(English Letters)1999，12，5： | 22 |
| 2 | Current role of bloodless liver resection显示文摘Liver resections are demanding operations which can have life threatening complications although they are performed by experienced liver surgeons. Recently new technologies are applied in the field of liver surgery, having one goal: safer and easier liver operations. The aim of this article is to address the issue of bloodless liver resection using radiofrequency energy. Radionics, Cool-tipTM System and Tissue Link are some of the devices which are using radiofrequency energy. All information included in this article, refers to these devices in which we have personal experience in our unit of liver surgery. These devices take advantage of its unique combination of radiofrequency current and internal electrode cooling to perform sealing of the small vessels and biliary radicals. Dissection is also feasible with the cool-tip probe. For the purposes of this study patient sex, age, type of disease and type of surgical procedure in association with the duration of parenchymal transection, blood loss, length of hospital stay, morbidity and mortality were analyzed. Cool-tip RF device may provide a unique, simple and rather safe method of bloodless liver resections if used properly. It is indicated mostly in cirrhotic patients with challenging hepatectomies (segment Ⅷ, central resections). The total operative time is eliminated and the average blood loss is significantly decreased. It is important to note that this technique should not be applied near the hilum or the vena cava to avoid damage of these structures. | Spiros G Delis Juan Madariaga A Bakoyiannis Ch Dervenis | 2007 | World Journal of Gastroenterology2007，13，6： | 7 |
| 3 | Gallstone ileus:One-stage surgery in a patient with intermittent obstruction显示文摘Gallstone ileus, an uncommon complication of cholelithiasis, is described as a mechanical intestinal obstruction due to impaction of one or more large gallstones within the gastrointestinal tract. The clinical presentation is variable, depending on the site of obstruction, manifested as acute, intermittent or chronic episodes. A 51-year-old female patient was referred to our hospital with 3 events of intestinal obstruction during the previous 7 d. At admission, there were clinical signs of intestinal obstruction; abdominal film demonstrated dilated bowel loops, air-fluid levels and a vague image of a stone in the inferior left quadrant. Once stabilized, a laparotomy was performed. Surgical findings were distention of the jejunum and ileum proximal to a palpable stone in the ileum as well as gallstones and a cholecystoduodenal fistula in the gallbladder. An enterolithotomy, repair of the cholecystoduodenal fistula and cholecystectomy were performed. The postoperative course was uneventful. There is no uniform surgical procedure for this disease. When the patient is too ill or when biliary surgery is not advisable, an enterolithotomy is the best option. The one-stage procedure should be the offered to adequately stabilized patients when local and general conditions, such as good cardiorespiratory and metabolic reserve permit a more prolonged surgical procedure. | Carlos M Nuo-Guzmán José Arróniz-Jáuregui Pável A Moreno-Pérez édgar A Chávez-Solís Nereida Esparza-Arias Cuauhtémoc I Hernández-González | 2010 | World Journal of Gastrointestinal Surgery2010，2，5： | 5 |
| 4 | Superior Properties of Mg–4Y–3RE–Zr Alloy Prepared by Powder Metallurgy显示文摘Magnesium alloys are important materials for application in the automotive and aviation industries. During the last few years, the number of possible applications as biodegradable implants in medicine has grown. Mg–RE(rare earth) alloys belong to the most advanced group of products, offering the best combination of mechanical properties and corrosion resistance. Among these materials, WE43(Mg–Y–Nd)is a very well-known commercial alloy that has been extensively studied for applications at increased temperatures and also in organisms. Although this material has been described, there are still possibilities to improve its properties and subsequently expand its applicability. Powder metallurgy has already been used for the preparation of magnesium alloys with superior mechanical properties and occasionally superior corrosion properties. Therefore, the present paper is oriented toward the preparation of Mg–4Y–3RE–Zr(WE43) alloy by the powder metallurgy technique(WE43-PM) and comparison of the final properties with the product of extrusion of as-cast ingot(WE43-IM). Our processing leads to a partial improvement in the mechanical properties and superior corrosion resistance of WE43-PM. The texture strength of WE43-PM was low, and therefore, anisotropy of mechanical properties was suppressed. | Jirí Kubásek Drahomír Dvorsky Miroslav Cavojsky Dalibor Vojtěch Nad'a Beronská Michaela Fousová | 2017 | Journal of Materials Science & Technology2017，33，7： | 4 |
| 5 | Timing, method and discontinuation of hydrocortisone administration for septic shock patients显示文摘AIM To characterize the prescribing patterns for hydrocortisone for patients with septic shock and perform an exploratory analysis in order to identify the variables associated with better outcomes.METHODS This prospective cohort study included 59 patients with septic shock who received stress-dose hydrocortisone.It was performed at 2 critical care units in academic hospitals from June 1st, 2015, to July 31 st, 2016. Demographic data, comorbidities, medical management details, adverse effects related to corticosteroids, and outcomes were collected after the critical care physician indicated initiation of hydrocortisone. Univariate comparison between continuous and bolus administration of hydrocortisone was performed, including multivariate analysis, as well as Kaplan-Meier analysis to compare the proportion of shock reversal at 7 d after presentation. Receiver operating characteristic(ROC) curves determined the best cut-off criteria for initiation of hydrocortisone associated with the highest probability of shock reversal. We addressed the effects of the taper strategy for discontinuation of hydrocortisone, noting risk of shock relapse and adverse effects.RESULTS All-cause 30-d mortality was 42%. Hydrocortisone was administered as a continuous infusion in 54.2% of patients; time to reversal of shock was 49 h longer in patients who were given a bolus administration [59 h(range, 47.5-90.5) vs 108 h(range, 63.2-189); P = 0.001]. The maximal dose of norepinephrine after initiation of hydrocortisone was lower in patients on continuous infusion [0.19 μg/kg per minute(range, 0.11-0.28 μg)] compared with patients who were given bolus [0.34 μg/kg per minute(range, 0.16-0.49); P = 0.004]. Kaplan-Meier analysis revealed a higher proportion of shock reversal at 7 d in patients with continuous infusion compared to those given bolus(83% vs 63%; P = 0.004). There was a good correlation between time to initiation of hydrocortisone and time to reversal of shock(r = 0.80; P < 0.0001); ROC curve analysis revealed that the best criteria for prediction of shock reversal was a time to initiation of hydrocortisone of ≤ 13 h after administration of norepinephrine, with an area under the curve of 0.81(P < 0.001). The maximal dose of norepinephrine at initiation of hydrocortisone with the highest association with shock reversal was ≤ 0.28 μg/kg per minute, with an area under the curve of 0.75(P = 0.0002). On a logistic regression model, hydrocortisone taper was not associated with a lower risk of shock relapse(RR = 1.29; P = 0.17) but was related to a higher probability of hyperglycemia [odds ratio(OR), 5.3; P = 0.04] and hypokalemia(OR = 10.6; P = 0.01). CONCLUSION Continuous infusion of hydrocortisone could hasten the resolution of septic shock compared to bolus administration. Earlier initiation corresponds with a higher probability of shock reversal. Tapering strategy is unnecessary. | Miguel A Ibarra-Estrada Quetzalcóatl Chávez-Pe?a Claudia I Reynoso-Estrella Jorge Rios-Zerme?o Pável E Aguilera-González Miguel A García-Soto Guadalupe Aguirre-Avalos | 2017 | World Journal of Critical Care Medicine2017，6，1： | 4 |
| 6 | 巨噬细胞中缺氧诱导因子1α表达促进动脉粥样硬化的发展显示文摘粥样硬化病变包含缺氧区域,但缺氧病理生理的重要性未知。缺氧诱导因子1a(hypoxia-induciblefactor-1α,HIF-1α)是细胞对低氧反应的关键转录因子。研究人员对HIF-1α在巨噬细胞促进小鼠动脉粥样硬化的生物学效应方面进行调查和验证。 | 刘莉 叶鹏 Aarup A Pedersen TX Junker N Christoffersen C Bartels ED Madsen M Nielsen CH Nielsen LB | 2016 | 中华高血压杂志2016，24，9： | 3 |
| 7 | Effect of brain-derived neurotrophic factor, nerve growth factor, and neurotrophin-3 on functional recovery and regeneration after spinal cord injury in adult rats显示文摘 | Namiki J Kojima A Tator CH | | 0，，： | 2 |
| 8 | Improved osseointegration of titanium implants of different surface characteristics by the use of bone morphogenetic protein ( BMP-3 ) : an animal study performed at the metaphyseal bone bed in dogs显示文摘 | Hartwig CH Esenwein SA Pfund A | 2003 | Z Orthop Ihre Grenzgeb2003，141，6： | 1 |
| 9 | Molecular and immunological characterization of Mycobacterium tuberculosis CFP-10, an immunodiagnostic antigen missing in Mycobacterium boris BCG显示文摘 | Dillon DC Alderson MR Day CH Bement T Campos Neto A Skeiky YA Vedvick T Badaro R Reed SG Houghton R | 2000 | J Clin Microbiol2000，38，9： | 1 |
| 10 | Truncated hepatitis B virus RNA in human hepatocellular carcinoma: Its representation in patients with advancing age 显示文摘 | Beerheide W Zhou G Tang Y Edler L Schroeder CH | 1999 | Intervirology1999，42，： | 1 |
| 11 | High efficiency intracellular magnetic labeling with novel super-paramagnetic targeted peptide conjugates显示文摘 | Tung CH Moore A | 1999 | Bioconjug Chem1999，10，2： | 1 |
| 12 | Cellular senescence is an important mechanism of tumor regression upon c-myc inactivation显示文摘 | WU CH Riggelen J Yetil A | 2007 | PNAS2007，104，13： | 1 |
| 13 | Transcriptional repression of atherogenic inflammation:modulation by PPARδ显示文摘 | Lee CH Chawla A Urbiztondo N | 2003 | Science2003，302，5644： | 1 |
| 14 | ICF core sets:how to specify impairment and function in systemic Lupus erythematosus显示文摘 | Aringer M Stamm TA Pisetsky DS Yarboro CH Cieza A Smolen JS | 2006 | Lupus2006，15，： | 1 |
| 15 | Cell proliferation and cell cycle control: a mini review显示文摘 | Golias CH Charalabopoulos A Charalabopoulos K | 2004 | Int J Clin Pract2004，58，12： | 1 |
| 16 | Retinal neovascularization w ith myelinated nerve fibers显示文摘 | Sellami D Bouacida W Maalej A Ben-Amor S Chabouni M Kamoun B | 2008 | J Fr Ophthalmol2008，31，1： | 1 |
| 17 | Modification of flavonoid biosynthesis in crop plants显示文摘 | Schijlen E G Ric de Vos CH van Tunen A J | 2004 | Phytochemistry2004，65，19： | 1 |
| 18 | Trans-fatty acids intake and risk of myocardial infarction显示文摘 | A Ascherio CH Hennekens JE Buring C Master | 1994 | Circulation1994，89，： | 1 |
| 19 | A light- emitting field-effect transistor 显示文摘 | Schon J H Dodabalapur A Kloc Ch | 2000 | Science2000，290，： | 1 |
| 20 | PROOF study Group 显示文摘 | Chesnut CH Silveman S Andviano k A vandomized tial of nasal spay salmon calcitonin in postmenopausal women with established osteporosis: the prevnt recurrence of osteoporasis farcture study | 2000 | Am J Med2000，109，6： | 1 |
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