|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | A Novel Semiconductor CIGS Photovoltaic Material and Thin-Film ED Technology显示文摘In order to achieve low cost high efficiency thin film solar cells,a novel Semiconductor Photovoltaic (PV) active material CuIn 1-x Ga x Se 2 (CIGS) and thin film Electro Deposition (ED) technology is explored.Firstly,the PV materials and technologies is investigated,then the detailed experimental processes of CIGS/Mo/glass structure by using the novel ED technology and the results are reported.These results shows that high quality CIGS polycrystalline thin films can be obtained by the ED method,in which the polycrystalline CIGS is definitely identified by the (112),(204,220) characteristic peaks of the tetragonal structure,the continuous CIGS thin film layers with particle average size of about 2μm of length and around 1 6μm of thickness.The thickness and solar grade quality of CIGS thin films can be produced with good repeatability.Discussion and analysis on the ED technique,CIGS energy band and sodium (Na) impurity properties,were also performed.The alloy CIGS exhibits not only increasing band gap with increasing x ,but also a change in material properties that is relevant to the device operation.The beneficial impurity Na originating from the low cost soda lime glass substrate becomes one prerequisite for high quality CIGS films.These novel material and technology are very useful for low cost high efficiency thin film solar cells and other devices. | ZHENG Guang fu 1,YANG Hong xing 1,MAN Cheuk ho 1,WONG Wing lok 2, AN Da wei 1 and John BURNETT 1(1 Centre for Development of Solar Energy Technology,Department of Building Services Engineering, The Hong Kong Polytechnic University,Hong Kong,C | 2001 | Journal of Semiconductors2001,22,11: | 10 |
| 2 | A refutation of reported Levallois technology from Guanyindong Cave in south China显示文摘As one of the most complex forms of lithic technology known for the Paleolithic,research on the Levallois stoneknapping method is critically relevant to our understanding of the cognitive abilities and depth of planning capabilities of archaic hominins;as well as the diffusion of knowledge and social learning in Pleistocene societies.For decades,Levallois technology was thought to be absent from East Asia for much of the Pleistocene,appearing only quite late(ca.50-40 ka BP)[1,2].In a recent paper,H u et al.claim that Levallois technology was present at the Guanyindong(GYD)site in Qianxi County,Guizhou,Province,South China by at least 170 ka BP[3].This report claims that the GYD site is an exceptional case,preserving evidence of Levallois technology earlier than 50 ka BP. | Feng Li Yinghua Li Xing Gao Steven L.Kuhn Eric Boёda John W.Olsen | 2019 | National Science Review2019,6,6: | 4 |
| 3 | Scalable nanomanufacturing of surfactant-free carbon nanotube inks for spray coatings with high conductivity显示文摘Spray-coated carbon nanotube films offer a simple and printable solution for fabricating low cost, lightweight, and flexible thin-film electronics. However, current nanotube spray inks require either a disruptive surfactant or destructive surface functionalization to stabilize dispersions at the cost of the electrical properties of the deposited film. We demonstrate that high-purity few-walled carbon nanotubes may be stabilized in isopropanol after surface functionalization and that optimizing the ink stability dramatically enhances the conductivity of subsequent spray-coated thin films. We consequently report a surfactant-free carbon nanotube ink for spray-coated thin films with conductivities reaching 2,100 S/cm. Zeta-potential measurements, used to quantify the nanotube ink dispersion quality, directly demonstrate a positive correlation with the spray- coated film conductivity, which is the key metric for high-performance printed electronics. | Colin Preston Da Song Jaiqi Dai Zois Tsinas John Bavier John Cumings Vince Ballarotto Liangbing Hu | 2015 | Nano Research2015,8,7: | 4 |
| 4 | Propofol vs midazolam sedation for elective endoscopy in patients with cirrhosis:A systematic review and meta-analysis of randomized controlled trials显示文摘BACKGROUND Patients with cirrhosis frequently require sedation for elective endoscopic procedures.Several sedation protocols are available,but choosing an appropriate sedative in patients with cirrhosis is challenging.AIM To conduct a systematic review and meta-analysis to compare propofol and midazolam for sedation in patients with cirrhosis during elective endoscopic procedures in an attempt to understand the best approach.METHODS This systematic review and meta-analysis was conducted using the PRISMA guidelines.Electronic searches were performed using MEDLINE,EMBASE,Central Cochrane,LILACS databases.Only randomized control trials(RCTs)were included.The outcomes studied were procedure time,recovery time,discharge time,and adverse events(bradycardia,hypotension,and hypoxemia).The risk of bias assessment was performed using the Revised Cochrane Risk-of-Bias tool for randomized trials(RoB-2).Quality of evidence was evaluated by GRADEpro.The meta-analysis was performed using Review Manager.RESULTS The search yielded 3,576 records.Out of these,8 RCTs with a total of 596 patients(302 in the propofol group and 294 in the midazolam group)were included for the final analysis.Procedure time was similar between midazolam and propofol groups(MD:0.25,95%CI:-0.64 to 1.13,P=0.59).Recovery time(MD:-8.19,95%CI:-10.59 to-5.79,P<0.00001).and discharge time were significantly less in the propofol group(MD:-12.98,95%CI:-18.46 to-7.50,P<0.00001).Adverse events were similar in both groups(RD:0.02,95%CI:0-0.04,P=0.58).Moreover,no significant difference was found for bradycardia(RD:0.03,95%CI:-0.01 to 0.07,P=0.16),hypotension(RD:0.03,95%CI:-0.01 to 0.07,P=0.17),and hypoxemia(RD:0.00,95%CI:-0.04 to 0.04,P=0.93).Five studies had low risk of bias,two demonstrated some concerns,and one presented high risk.The quality of the evidence was very low for procedure time,recovery time,and adverse events;while low for discharge time.CONCLUSION This systematic review and meta-analysis based on RCTs show that propofol has shorter recovery and patient discharge time as compared to midazolam with a similar rate of adverse events.These results suggest that propofol should be the preferred agent for sedation in patients with cirrhosis. | John Alexander Lata Guacho Diogo Turiani Hourneaux de Moura Igor Braga Ribeiro Alberto Machado da Ponte Neto Shailendra Singh Marina Gammaro Baldavira Tucci Wanderley Marques Bernardo Eduardo Guimarães Hourneaux de Moura | 2020 | World Journal of Gastrointestinal Endoscopy2020,12,8: | 4 |
| 5 | Biological efficacy of perpendicular type-I collagen protruded from TiO_(2)-nanotubes显示文摘The aim of this study was to evaluate the biological efficacy of a unique perpendicular protrusion of type-I collagen(Col-I)from TiO2 nanotubes(NT-EPF surface).We hypothesized that the NT-EPF surface would play bifunctional roles in stimulating plateletmediated fibroblast recruitment and anchoring fibroblast-derived Col-I to form a perpendicular collagen assembly,mimicking the connective tissue attachment around natural teeth for the long-term maintenance of dental implants.Ti surface modification was accomplished in two steps.First,TiO2 nanotubes(NT)array was fabricated via anodization.Diameters and depths of NTs were controlled by applied voltage and duration.Subsequently,an electrophoretic fusion(EPF)method was applied to fuse Col-I into nanotube arrays in a perpendicular fashion.Surface wettability was assessed by contact angle measurement.The bioactivity of modified TiO2 surfaces was evaluated in terms of NIH3T3 fibroblast attachment,platelet activation,and collagen extension.Early attachment,aggregation,and activation of platelets as well as release of platelet-related growth factors were demonstrated on NTEPF surfaces.Platelet-mediated NIH3T3 cells migration toward NT-EPF was significantly increased and the attached cells showed a typical fibrous morphology with elongated spindle shape.A direct linkage between pseudopod-like processes of fibroblasts to NTEPF surfaces was observed.Furthermore,the engineered EPF collagen protrusion linked with cell-derived collagen in a perpendicular fashion.Within the limitation of this in vitro study,the TiO2 nanotube with perpendicular Col-I surface(NT-EPF)promoted better cell attachment,induced a strong platelet activation which suggested the ability to create a more robust soft tissue seal. | Chia-Yu Chen David M.Kim Cliff Lee John Da Silva Shigemi Nagai Toshiki Nojiri Masazumi Nagai | 2020 | International Journal of Oral Science2020,12,4: | 3 |
| 6 | Inhibition of Rho-kinase by fasudil attenuated angiotensin II-induced cardiac hypertrophy in apolipoprotein E deficient mice显示文摘 | Yi-Xin Wang Valdeci da Cunha Baby Martin-McNulty Jon Vincelette Weiwei Li David F. Choy Meredith Halks-Miller Mithra Mahmoudi Miriam Schroeder Anthony Johns David R. Light William P. Dole | 2005 | European Journal of Pharmacology2005,,2: | 2 |
| 7 | Epithelial cell adhesion efficacy of a novel peptide identified by panning on a smooth titanium surface显示文摘Epithelial attachment via the basal lamina on the tooth surface provides an important structural defence mechanism against bacterial invasion in combating periodontal disease. However, when considering dental implants, strong epithelial attachment does not exist throughout the titanium-soft tissue interface, making soft tissues more susceptible to peri-implant disease. This study introduced a novel synthetic peptide(A10) to enhance epithelial attachment. A10 was identified from a bacterial peptide display library and synthesized. A10 and protease-activated receptor 4-activating peptide(PAR4-AP, positive control) were immobilized on commercially pure titanium. The peptide-treated titanium showed high epithelial cell migration ability during incubation in platelet-rich plasma. We confirmed the development of dense and expanded BL(stained by Ln5) with pericellular junctions(stained by ZO1) on the peptide-treated titanium surface. In an adhesion assay of epithelial cells on A10-treated titanium, PAR4-AP-treated titanium, bovine root and non-treated titanium, A10-treated titanium and PAR4-AP-treated titanium showed significantly stronger adhesion than non-treated titanium. PAR4-AP-treated titanium showed significantly higher inflammatory cytokine release than non-treated titanium. There was no significant difference in inflammatory cytokine release between A10-treated and non-treated titanium. These results indicated that A10 could induce the adhesion and migration of epithelial cells with low inflammatory cytokine release. This novel peptide has a potentially useful application that could improve clinical outcomes with titanium implants and abutments by reducing or preventing peri-implant disease. | Hidemichi Kihara David M.Kim Masazumi Nagai Toshiki Nojiri Shigemi Nagai Chia-Yu Chen Cliff Lee Wataru Hatakeyama Hisatomo Kondo John Da Silva | 2018 | International Journal of Oral Science2018,10,3: | 2 |
| 8 | A case ::f molar ec- topic pregnancy 显示文摘 | Chaulan S Diamond MP Johns DA | 2004 | Fertil Steril2004,81,4: | 1 |
| 9 | Reduction of postoperative adhesions by N,O-carboxymethylchitosan:a pilot study显示文摘 | Diamond MP Luciano A Johns DA | 2003 | FertilSteril2003,80,: | 1 |
| 10 | Geographic distribution of vacA allelic types of Helicobacter pylori显示文摘 | Leen–Jan Van Doorn Céu Figueiredo Francis Mégraud Salvador Pena Peter Midolo Dulciene Maria De Magalh?es Queiroz Fátima Carneiro Bart Vanderborght Maria Da Glória F. Pegado Ricardo Sanna Wink De Boer Peter M. Schneeberger Pelayo Correa Enders K.W. Ng John | 1999 | Gastroenterology1999,,4: | 1 |
| 11 | Does an immigrant health paradox exist among Asian Americans? Associations of nativity and occupation- al class with self-rated health and mental diorder 显示文摘 | John DA | 2012 | Social Science & Medicine2012,75,12: | 1 |
| 12 | Inspired gas humidity during mechanical ventilation:effects of humidification chamber,airway temperature probe position and environmental conditions显示文摘 | Todd DA Boyd J Lloyd J John E | 2001 | J Paediatr Child Health2001,37,: | 1 |
| 13 | Mental health service use from a religious or spiritual advisor among Asian Americans 显示文摘 | John DA | 2013 | Asian Jour- nal of Psychiatry2013,6,6: | 1 |
| 14 | A case of molar ectopic pregnancy 显示文摘 | Chauhan S Diamond MP Johns DA | 2004 | Fertility Sterility2004,81,: | 1 |
| 15 | Two new Eulophidae (Hymenopte-ra:Chlcidoidea) of economic importance from China显示文摘 | John LeSalle Huang Da Wei | 1994 | Bulletinof Entomological Research1994,84,: | 1 |
| 16 | Muhifactorial modeling of temporomandibular anatomic and orthopedic relationships in normal versus undifferentiated disk displacement joints 显示文摘 | Pullinger AG Seligman DA John MT | 2002 | Prosthet Dent2002,87,3: | 1 |
| 17 | The medical and economic impact of laparoscopi-cally assisted vaginal hysterectomy in a large, metropolitan, not-for-profit hospital 显示文摘 | Johns DA Carrera B Johns J | 1995 | Am J Obstet Gynecol1995,172,: | 1 |
| 18 | Muhifactorial compari- son of disk displacement with and without reduction to normals accord- ing to temporomandibular joint hard tissue anatomic relationships显示文摘 | Pullinger AG Seligrnan DA John MT | 2002 | Prosthet Dent2002,87,3: | 1 |
| 19 | Efforts to mitigate the economic impact of the COVID-19 pandemic:potential entry points for neglected tropical diseases显示文摘Background:The damage inflicted by the coronavirus diseases 2019(COVID-19)pandemic upon humanity is and will continue to be considerable.Unprecedented progress made in global health over the past 20 years has reverted and economic growth has already evaporated,giving rise to a global recession,the likes of which we may not have experienced since the Second World War.Our aim is to draw the attention of the neglected tropical disease(NTD)community towards some of the major emerging economic opportunities which are quickly appearing on the horizon as a result of COVID-19.Main text:This scoping review relied on a literature search comprised of a sample of articles,statements,and press releases on initiatives aimed at mitigating the impact of COVID-19,while supporting economic recovery.Of note,the donor scenario and economic development agendas are highly dynamic and expected to change rapidly as the COVID-19 pandemic unfolds,as are donor and lender priorities.Con elusions:The NTD community,particularly in low-and middle-income countries(LMICs),will need to work quickly,diligently,and in close collaboration with decision-makers and key stakeholders,across sectors at national and international level to secure its position.Doing so might enhance the odds of grasping potential opportunities to access some of the massive resources that are now available in the form of contributions from corporate foundations,trust funds,loans,debt relieve schemes,and other financial mechanisms,as part of the ongoing and future economic development agendas and public health priorities driven by the COVID-19 pandemic.This paper should serve as a starting point for the NTD community to seek much needed financial support in order to sustain and revitalize control and elimination efforts pertaining to NTDs in LMICs. | John P.Ehrenberg Jurg Utzinger Gilberto Fontes Eliana Maria Mauricio da Rocha Nieves Ehrenberg Xiao-Nong Zhou Peter Steinmann | 2021 | Infectious Diseases of Poverty2021,10,1: | 1 |
| 20 | Effect of aspirin on coronary collateral blood flow显示文摘 | John DA Daniel D Todd P | 1993 | Circulation1993,87,: | 1 |