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| 1 | 上海地区成人恒牙冠根比例的研究显示文摘目的:评估上海地区成人男女冠根比是否存在着差异。方法:收集本院拔除的离体恒牙1400颗,患者年龄25~35岁,男女各700颗。用游标卡尺精确测量牙根长度、牙冠长度后计算冠根比,并应用SPSS 17软件t检验进行统计学分析。结果:研究发现,男性除上颌中切牙牙冠长度小于女性外,其余恒牙牙冠及牙根长度均大于女性。结论:上海成年男女上、下颌牙冠根比存在差异。 | NIVA Kansakar 王佐林 | 2011 | 口腔颌面外科杂志2011，21，1： | 14 |
| 2 | 从热电厂粉煤灰中提取铝生产硫酸铝(英文)显示文摘目前从热电厂粉煤灰中提取有价金属的方法存在一定的局限性。研究用硫酸从热电厂粉煤灰中提取铝制备高纯硫酸铝(>99.0%)。以硫酸为萃取剂分别提取Talcher热电站和Vedanta铝业有限公司的粉煤灰中的铝制备硫酸铝。采用X射线衍射谱、傅里叶红外光谱和热重分析等手段对硫酸铝产品进行表征,用电感耦合等离子-光学发射光谱测量硫酸铝产品的纯度。结果表明,粉煤灰的浸出率取决于粉煤灰与硫酸的固液比以及粉煤灰的颗粒尺寸。物化分析结果表明,所得产品为Al_2(SO_4)_3·18H_2O,其铁含量较低,仅为0.08%(质量分数)。 | Seoul SANGITA Niva NAYAK Chitta Ranjan PA | 2017 | Transactions of Nonferrous Metals Society of China2017，27，9： | 4 |
| 3 | Post office box addresses : a challenge for geographic information system-based studies显示文摘 | Hurley SE Saunders TM Nivas R | 2003 | Epidemiology2003，14，4： | 1 |
| 4 | Crystal growth and low coercive field 180 ° domain switching characteristics of stoichiometric LiTaO3 显示文摘 | KITAMURA K FURUKAWA Y NIVA K | 1998 | Appl Phys Lett1998，73，： | 1 |
| 5 | Bone stress injuries of the talus in military recruits 显示文摘 | Sormaala MJ Niva MH Kiuru MJ | 2006 | Bone2006，39，： | 1 |
| 6 | Arthroscopic resection of medial plica of the knee in young adults显示文摘 | Weckstr m M Niva MH Lamminen A | 2010 | Knee2010，17，2： | 1 |
| 7 | Aluminium extraction and leaching char- acteristics of Talcher Thermal Power Station fly ash with sulphuric acid显示文摘 | Niva N Panda C R | 2010 | Fuel2010，89，1： | 1 |
| 8 | Surfactant enhanced remediation of subsurface chromium contamination 显示文摘 | Nivas B T Sabatini D A Shiau B J | 1996 | Water Research1996，30，： | 1 |
| 9 | Bone stress injuries are common in female military trainees: a preliminary study显示文摘 | Niva MH Mattila VM Kiuru MJ | 2009 | Clin Orthop Re/at Res2009，467，11： | 1 |
| 10 | Copyright Policy and the Limits ofFreedom of Contract显示文摘 | Niva Elkin-Koren | 1997 | Berkeley Technology Law Journal1997，，1： | 1 |
| 11 | Surfactant enhanced remediation of subsurface chromium contamination显示文摘 | NIVAS B T SABATINI D A | 1996 | Water Research1996，30，3： | 1 |
| 12 | Cationic am- phiphlles:promising carvers of genetic materials in gene therapy 显示文摘 | Sri nivas R Samanta S Chaudhuri A | 2009 | Chem Soc Rev2009，38，12： | 1 |
| 13 | Vegetative buffer zones as pesticide filters for simulated surface runoff显示文摘 | Niva Syversen Marianne Bechmanne | 2004 | Ecological Engineering2004，22，： | 1 |
| 14 | 25-Hydroxyvitamin D3-1α-Hydroxylase Is Expressed in Human Vascular Smooth Muscle Cells and Is Upregulated by Parathyroid Hormone and Estrogenic Compounds显示文摘 | Dalia Somjen Yosef Weisman Fortune Kohen Batya Gayer Rona Limor Orly Sharon Niva Jaccard Esther Knoll Naftali Stern | 2005 | Circulation2005，，13： | 1 |
| 15 | Some characteristics of Orissa fly ash with reference to mineral recovery显示文摘 | Niva Nayak | | 0，，26： | 1 |
| 16 | Teachers’pedagogical change mechanism- Pattern of structural relations between teachers’pedagogical characteristics and teachers'perceptions oftransactional distance (TTD) in different teachingenvironments显示文摘 | Niva Wengrowicz | 2014 | Computers & amp education2014，2014，76： | 1 |
| 17 | Synthesis of glutamate receptor antagonist philanthotoxin-433 (phtx-433) and its analogs显示文摘 | Goodnow R Konno K Niva M | | 0，，09： | 1 |
| 18 | Surfactant enhanced remediation of subsurface chromium contamination显示文摘 | NIVAS B T SABATINI D A SHIAU B J | 1996 | Water Research1996，30，3： | 1 |
| 19 | Interleukin-8 and biocompatibility of dialysis membrances显示文摘 | Niva T Nivazaki T Soton M | 1995 | Am J Nephrol1995，15，： | 1 |
| 20 | Why, when, and how spontaneous intracerebral hematomas should be operated显示文摘 | Carvi Y Nivas MN | 2005 | Med Sci Monit2005，11，1： | 1 |
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