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| 1 | Design of a hybrid magnetomotive force electromechanical valve actuator显示文摘We propose a novel axis-symmetric modified hybrid permanent magnet(PM)/electromagnet(EM) magnetomotive force actuator for a variable valve timing camless engine. The design provides a large magnetic force with low energy consumption, low coil inductance, PM demagnetization isolation, and improved transient response. Simulation and experimental results confirm forces of about 200 N(in the presence of coil current) at the equilibrium position and 500 N(in the absence of coil current) at the armature seat. We compared our proposed design with a double solenoid valve actuator(DSVA). The finite element method(FEM) designs of the DSVA and our proposed valve actuator were validated by experiments performed on manufactured prototypes. | Jawad ASLAM Xing-hu LI Faira Kanwal JANJUA | 2017 | Frontiers of Information Technology & Electronic Engineering2017，18，10： | 3 |
| 2 | Differing profiles of people diagnosed with acute and chronic hepatitis B virus infection in British Columbia,Canada显示文摘AIM To describe the characteristics of people diagnosed with acute and chronic hepatitis B virus(HBV) infection in British Columbia(BC).METHODS We used data from the BC Hepatitis Testers Cohort(BCHTC),which includes all individuals tested for hepatitis C virus(HCV) or human immunodeficiency virus(HIV) or those diagnosed with HBV or active tuberculosis in BC since 1990.These data were integrated with prescription drug,medical visit,hospitalization and mortality data.HBV cases were classified as acute or chronic according to provincial guidelines.We compared characteristics of individuals by HBV infection group(acute,chronic and negative).Factors associated with acute or chronic HBV infection were assessed with multinomial logistic regression models in comparison to the HBV negative group.RESULTS46498 of the 1058056 eligible BC-HTC participants were diagnosed with HBV infection.4.3% of HBV positive individuals were diagnosed with acute HBV infections while 95.7% had chronic infections.Problematic alcohol use,injection drug use,and HIV or HCV co-infection were more common among individuals diagnosed with acute HBV compared to those with chronic infections and HBV negative individuals.In multivariable multinomial logistic regression models,we observed significant associations between acute or chronic HBV diagnosis and being male,age at HBV diagnosis or birth cohort,South and East Asian ethnicity,HCV or HIV infection,and injection drug use.The odds of acute HBV decreased with increasing age among people who inject drugs,while the opposite was true for chronic HBV.Persons with acute HBV were predominantly White(78%) while those with chronic HBV were mostly East Asian(60%).Relative to Whites,East Asians had 12 times greater odds of being diagnosed with chronic HBV infection.These odds increased with increasing socioeconomic deprivation.CONCLUSION Differences in the profiles of people diagnosed with acute and chronic HBV infection necessitate differentiated screening,prevention,care and treatment programs. | Mawuena Binka Zahid A Butt Stanley Wong Mei Chong Jane A Buxton Nuria Chapinal Amanda Yu Maria Alvarez Maryam Darvishian Jason Wong Gina McGowan Mikhail Torban Mark Gilbert Mark Tyndall Mel Krajden Naveed Z Janjua | 2018 | World Journal of Gastroenterology2018，24，11： | 3 |
| 3 | Tapering-induced enhancement of light extraction efficiency of nanowire deep ultraviolet LED by theoretical simulations显示文摘A nanowire(NW) structure provides an alternative scheme for deep ultraviolet light emitting diodes(DUV-LEDs)that promises high material quality and better light extraction efficiency(LEE). In this report, we investigate the influence of the tapering angle of closely packed Al Ga N NWs, which is found to exist naturally in molecular beam epitaxy(MBE) grown NW structures, on the LEE of NW DUV-LEDs. It is observed that, by having a small tapering angle, the vertical extraction is greatly enhanced for both transverse magnetic(TM) and transverse electric(TE) polarizations. Most notably, the vertical extraction of TM emission increased from 4.8% to 24.3%,which makes the LEE reasonably large to achieve high-performance DUV-LEDs. This is because the breaking of symmetry in the vertical direction changes the propagation of the light significantly to allow more coupling into radiation modes. Finally, we introduce errors to the NW positions to show the advantages of the tapered NW structures can be projected to random closely packed NW arrays. The results obtained in this paper can provide guidelines for designing efficient NW DUV-LEDs. | RONGHUI LIN SERGIO VALDES GALAN HAIDING SUN YANGRUI HU MOHD SHARIZAL ALIAS BILAL JANJUA TIEN KHEE NG BOON S.OOI XIAOHANG LI | 2018 | Photonics Research2018，6，5： | 3 |
| 4 | 层状双氢氧化物(LDHs)的合成及应用(英文)显示文摘Layered double hydroxides, a class of anionic clays possessing sandwich like structure in which negative anions are sandwiched into positively charged metal layers in a repeating manner, have been studied extensively. Layered double hydroxides could be fabricated with combination of different divalent(Cd^(2+), Mn^(2+), Fe^(2+), Pb^(2+)) and trivalent(Al^(3+), Cr^(3+), Fe^(3+)) metals and layered arrangement imparts unique properties such as adsorption properties and catalytic properties in these compounds. Exciting feature of these compounds is the memory effect. There are a number of methods to synthesize these layered compounds, such as co-precipitation, hydrothermal, sol-gel, urea hydrolysis,?etc. The synthesized LDHs can be characterized morphologically and compositionally i.e. scanning electron microscopy, transmission electron microscopy, powder X-Ray diffraction, Mossbauer spectroscopy, thermogravimetric analysis, XPS, etc. The wonderful feature of layered double hydroxides is the pliancy of interlayer space enabling them to accommodate various anionic species, and high surface area making them efficient in numerous applications such as adsorbents, anion exchange, catalysts, and biological compatible. | Saba Jamil Afaaf Rahat Alvi Shanza Rauf Khan Muhammad Ramzan Saeed Ashraf Janjua | 2019 | 化学进展2019，31，2： | 3 |
| 5 | Towards safe injection practices for prevention of hepatitis C transmission in South Asia: Challenges and progress显示文摘AIM: To summarize the available information about injection use and its determinants in the South Asian region. METHODS: We searched published and unpublished literature on injection safety in South Asia published during 1995-2016 using the keywords 'injection' 'unsafe injection' and 'immunization injection' and combined these with each of the countries and/or their respective states or provinces in South Asia. We used a standardized questionnaire to abstract the following data from the articles: the annual number of injections per capita, the proportion of injections administered with a reused syringe or needle, the distribution of injections with respect to prescribers and providers and determinants of injection use. RESULTS: Although information is very limited for certain countries(i.e., Bhutan, Maldives and Sri Lanka), healthcare injection use is very common across South Asia, with cross-country rates ranging from 2.4 to 13.6 injections/person/year. Furthermore, recent studies show that 5% to 50% of these injections are provided with reused syringes, thus creating potential to transmission of blood-borne pathogens. Qualified and unqualified practitioners, especially in the private sector, are the major drivers behind injection use, but patients also prefer injections, especially among the rural, poor or uneducated in certain countries. According to available data, Pakistan and India have recently taken steps towards achieving safe injection. Potential interventions include the introduction of reuse prevention devices, and patient-, community- and patient/community and provider-centered interventionsto change population and practitioner behavior. CONCLUSION: Injection use is common in South Asian countries. Multilevel interventions aiming at patients, providers and the healthcare system are needed to reduce injection use and reuse. | Naveed Zafar Janjua Zahid Ahmad Butt Bushra Mahmood Arshad Altaf | 2016 | World Journal of Gastroenterology2016，22，25： | 3 |
| 6 | Effects of ciprofloxacin on foetal hepatocytes显示文摘 | Channa M A Janjua M Z | 2003 | J Pak Med Assoc2003，53，10： | 2 |
| 7 | Losartan treatment normalizes renal sodium and water handling in rats with mild congestive heart failure显示文摘 | Nielsen S Janjua NR | 2002 | Am J Physiol Renal Physiol2002，282，： | 1 |
| 8 | Outcomes with retrievable inferior vena cava filters显示文摘 | Janjua M Younas F Moinuddin I | 2010 | J Invasive Cardiol2010，22，5： | 1 |
| 9 | Post-traumatic moderate systemic hypothermia reduces TUNEL positive cells following spinal cord injury in rat显示文摘 | Shibuya S Miyamoto O Janjua NA | 2004 | Spinal Cord2004，42，1： | 1 |
| 10 | Cerebral vasospasm after subaraehnoid hemorrhage显示文摘 | Janjua N Mayer S | 2003 | Curr Opin Crit Care2003，9，2： | 1 |
| 11 | Vitiligo appearing in striae distensae as a Koebner phenomenon 显示文摘 | Iftikhar N Rahman A Janjua SA | 2009 | J Coll Physicians Surg Pak2009，19，12： | 1 |
| 12 | An ultrasafe hydrogen generator: aqueous, alkaline borohydride solutions and Ru catalyst 显示文摘 | Amendola S C Sharp-Goldman S L Janjua M S | 2000 | J Power Source2000，85，： | 1 |
| 13 | Cerebral vasospasm after subarachnoid hemorrhage 显示文摘 | Janjua N Mayer SA | 2003 | Curt Opin Crit Care2003，9，2： | 1 |
| 14 | A safe, portable, hydrogen gas generator using aqueous borohysride solution and Ru catalyst 显示文摘 | Amendola S C Sharp-Goldman S L Janjua M S | 2000 | Int J Hydrogen Energy2000，25，： | 1 |
| 15 | Outcome in stable patients with acute pul- monary embolism who had right ventricular enlargement and/or elevated levels of troponin I显示文摘 | Stein PD Matta F Janjua M | 2010 | Am J Cardiol2010，106，4： | 1 |
| 16 | Systemic uptake of diethyl phthalate, dibutyl phthalate, and butyl paraben following whole- body topical application and reproductive and thyroid hormone levels in humans显示文摘 | JANJUA N R MORTENSEN G K ANDERSSON A M | 2007 | Environ Sci Technol2007，41，15： | 1 |
| 17 | Sectrophotometric analysis of flavonoid-DNA binding interactions at physiological conditions 显示文摘 | Janjua N K Siddiqa A Yaqub A | 2009 | Spectrochim Acta A Mol Biomol Spectrosc2009，74，5： | 1 |
| 18 | Predictors and impact of aneurysm rebleeding after subarachnoid hemorrhage显示文摘 | Naidech A M Janjua N Kreiter K T | 2005 | Arch Neurol2005，62，3： | 1 |
| 19 | Measurements of the normal adult lumbar spinal canal 显示文摘 | Janjua MZ Muhammad F | 1989 | J Pak Med Assoc1989，39，10： | 1 |
| 20 | Urinary excretion of phthalates and paraben after repeated whole-body topical application in humans 显示文摘 | JANJUA N R FREDERIKSEN H SKAKKEBAEK N E | 2008 | Int J Androl2008，31，2： | 1 |
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