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| 1 | 低成本吸附剂稻壳灰对Cr(Ⅵ)去除机制的谱学表征显示文摘以低成本稻壳灰作为吸附剂,使用FTIR,SEM,XPS,XRD,XRF等分析手段,研究稻壳灰对Cr(Ⅵ)的去除机制。FTIR研究表明酰胺Ⅱ带,Si—O—Si,O—Si—O等在Cr(Ⅵ)去除过程中有一定贡献。由SEM图片清晰可见:吸附Cr(Ⅵ)后,稻壳灰表面分布有众多的光亮沉积物。XPS图谱证明:稻壳灰的主要组成元素为C,N,O,P和Si;C元素的存在状态以醛酮类为主,含C官能团与Cr(Ⅵ)发生了配位反应;N元素以—NH2形态为主,Cr(Ⅵ)可能以静电作用与含N基团结合,并以物理吸附为主;Si的存在以Si—O为主,含Si官能团可能与Cr(Ⅵ)发生了配位反应。XRD分析结果表明:谱图中出现的峰是典型的SiO2特征峰;稻壳灰的结晶度增加,表明稻壳灰与Cr(Ⅵ)形成了具有晶体结构的金属化合物。XRF研究发现,K,Na,Mg和Ca的元素含量在吸附前后有所变化,另有两种新元素出现,这说明吸附过程存在离子交换机制。所有这些皆表明:各种官能团在Cr(Ⅵ)去除过程中的角色各不相同,无机微沉淀机制、氧化还原机制、表面络合机制、离子交换机制等是稻壳灰去除Cr(Ⅵ)的主要途径。这可以为吸附技术的实际应用提供理论支持。 | 范春辉 张颖超 张颖 韩雪 Benny Chefetz | 2010 | 光谱学与光谱分析2010，30，10： | 13 |
| 2 | 红外光谱法研究低温焚烧稻壳灰对Cr(Ⅵ)的吸附机理显示文摘采用Boehm滴定法量化了低温焚烧稻壳灰表面官能团,考察了溶液初始pH值和温度对吸附效能的影响,借助动力学方程和吸附等温线,研究了稻壳灰对Cr(Ⅵ)的吸附性能,利用红外图谱、扫描电镜表征了稻壳灰的表面形貌和吸附机理。结果表明:在pH值为5时,稻壳灰对Cr(Ⅵ)取得最优去除效果,吸附前后溶液pH值变化很小。稻壳灰对Cr(Ⅵ)有较强的去除能力,对于20 mg.L-1的Cr(Ⅵ)溶液,最高去除率能达到95%左右,达到《污水综合排放标准GB8978—1996》1~2级标准。吸附过程能更好地符合准二级反应动力学方程和Langmuir等温线方程,饱和吸附容量可达3.277 6 mg.g-1。红外光谱表明酰胺Ⅱ带、Si—O—Si、O—Si—O等在Cr(Ⅵ)吸附过程中可能有重要贡献。扫描电镜图片表明吸附Cr(Ⅵ)后,稻壳灰表面分布有众多的光亮沉积物,有条带状或不规则点斑出现,推测无机微沉淀和氧化还原机理在吸附过程中起重要作用。稻壳灰是一种价格低廉、有应用潜力的高效吸附剂,可以用于水体重金属污染的治理修复。 | 范春辉 张颖 张颖超 李晶 Benny Chefetz | 2010 | 光谱学与光谱分析2010，30，9： | 11 |
| 3 | How to win the ovarian cancer stem cell battle: destroying the roots显示文摘Ovarian cancer has the highest mortality rate among gynecologic malignancies.The combination of cytoreductive surgery and chemotherapy is the standard regimen for the treatment of ovarian cancer.The initial treatment is usually effective,but many patients with ovarian cancer experience recurrence,and treatment options for recurrent disease remain challenging.Cancer stem cells(CSCs)are suggested to play an essential role in cancer recurrence after initial chemotherapy.Furthermore,they are of great interest as CSCs may also be involved in chemotherapy susceptibility.Thus,understanding the characteristics and mechanisms by which CSCs display resistance to therapeutic agents is important to design effective cancer treatments.In this review,we describe and discuss current therapeutic regimens for ovarian cancer,as well as the various CSC markers,association between CSCs and disease progression,correlation of CSCs with poor prognosis,enrichment of CSCs in tumor tissues following repeated chemotherapy cycles,activation of major signaling pathways following chemotherapy,and potential inhibitors that suppress these signaling cascades.In addition,clinical trials evaluating novel targeted therapies to overcome chemotherapy resistance will be reviewed.The combination of traditional chemotherapy and CSC-targeted therapy could be an effective and promising anticancer treatment for ovarian cancer.Understanding the biological properties of CSCs and the mechanism of chemotherapy resistance are critical to design and develop new therapeutic strategies to overcome CSC-associated chemotherapy resistance. | Akimasa Takahashi Linda Hong Ilana Chefetz | 2020 | Cancer Drug Resistance2020，3，4： | 2 |
| 4 | Sorption and mobility of pharmaceutical compounds in soil1 irrigated with reclaimed wastewater 显示文摘 | Chefetz B Mualem T Ben - Ari J | 2008 | Chemosphere2008，73，： | 1 |
| 5 | Pyrene sorption by natural organic matter显示文摘 | Chefetz B Deshmukh A-P Hatcher PG | 2000 | Environmental Science & Technology2000，34，14： | 1 |
| 6 | Longitudinal determination of serum placental protein 13 during development of preeclampsia显示文摘 | Huppertz B Sammar M Chefetz I | 2008 | Fetal Diagn Ther2008，24，： | 1 |
| 7 | Interactions oforganic compounds with was tewater dissolved organic matter显示文摘 | ILANI T SCHULZ E CHEFETZ B | 2005 | Journal of Environmental Quality2005，34，2： | 1 |
| 8 | A novel homozygous missense mutation in FGF23 causes Familial Tumoral Calcinosis associated with disseminated visceral calcification显示文摘 | Chefetz I Heller R Galli-Tsinopoulou A | 2005 | Hum Genet2005，118，2： | 1 |
| 9 | Binding of pyrene to hydrop hobic fractions of dissolved organic matter:effect of polyvalent metal complexa tion显示文摘 | POLUBESOVA T SHERMAN-NAKACHE M CHEFETZ B | 2007 | Environmental Science & Technology2007，41，15： | 1 |
| 10 | A deleterious mutation in SAMD9 causes normophosphatemic familial tumoral calcinosis显示文摘 | Topaz O Indelman M Chefetz I | 2006 | Am J Hum Genet2006，79，4： | 1 |
| 11 | First - trimester maternal serum PP- 13 ,PAPP- A and second- trimester uterine artery Doppler pulsatility index as markers of pre -eclampsia显示文摘 | Spencer K Cowans N J Chefetz I | 2007 | Ultrasound Obstet Gynecol2007，29，： | 1 |
| 12 | First-trimester maternal serum PP-13,PAPP-A and second-trimester uterine artery Doppler pulsatility index as markers of pre-eclampsia显示文摘 | Spencer K Cowans NJ Chefetz I | 2007 | Ultrasound Obstet Gynecol2007，29，2： | 1 |
| 13 | Second-trimester uterine artery Doppler pulsatility index and maternal serum PP13 as markers of preeclampsia显示文摘 | SPENCER K COWANS N J CHEFETZ I | 2007 | Prenat Diagn2007，27，： | 1 |
| 14 | Chemical and biological characterization of organic matter during composting of municipal solid waste 显示文摘 | CHEFETZ B HATCHER P G HADAR Y | 1996 | Environ Qual1996，25，： | 1 |
| 15 | Successive Sorption-desorption Cycles of Dissolved Organic Matter in Mineral Soil Matrices显示文摘 | OREN A CHEFETZ B | 2012 | Geoderma2012，，189190： | 1 |
| 16 | Sorption of polar and nonpolar aromatic organic contaminants by plant cuticular materials-role of polarity and accessibility显示文摘 | Chen BL Johnson EJ Chefetz B | 2005 | Environmental Science and Technology2005，，39： | 1 |
| 17 | Pyrene sorption by natural organic matter显示文摘 | Deshmukh A P Hatcher P G 2000 | 2000 | Environ Sci Technol2000，34，： | 1 |
| 18 | Persistent organic pollutants and sedimentary organic matter properties: A case study in the Kishon River显示文摘 | Oren A Aizenshtat Z Chefetz B | 2006 | Israel Environmental Pollution2006，141，： | 1 |
| 19 | Chemical and biological characterization of organic matter during composting of municipal solid waste 显示文摘 | Chefetz B Hatcher P G Hadar Y | 1996 | Journal of Environmental Quality1996，25，4： | 1 |
| 20 | Chemical and biological characterization of organic matter during composting of municipal solid waste显示文摘 | Chefetz B Hatcher P G Hadar Y | 1996 | J Environ Qual1996，25，： | 1 |
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