|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | ZSM-5沸石结晶度对乙苯叔丁基化对位选择性的影响(英文)显示文摘Highly crystalline ZSM-5 zeolites are important for para-selective alkylation of alkyl aromatics, because they carry few external acid sites for isomerization of p-dialkyl products. Such zeolites (Si/Al = 25, 50, and 75) were synthesized in a fluoride medium between pH 4 and 6. Their crystallinities, crystal sizes, and surface areas were higher than those of a commercial ZSM-5 zeolite. Their para selectivities in alkylation were tested for vapor-phase tert-butylation of ethylbenzene between 200 and 400 °C. As expected, all the catalysts showed more than 90% para selectivity. At 300 °C, ethylbenzene conversion decreased in the order ZSM-5(25, commercial) > ZSM-5(25) > ZSM-5(50) > ZSM-5(75). The catalysts had weak, medium, and strong acid sites, but all the acid sites of ZSM-5(75) were weaker than those of ZSM-5(25) and ZSM-5(50). The high activity of commercial ZSM-5 was caused by its strong acid sites being stronger than those of the synthesized zeolites. Although the activity of the commercial catalyst was higher than those of the present catalysts, the selectivity for 4-t-butylethylbenzene (4-t-BEB) was low. The optimum feed ratio (ethylbenzene:t-butyl alcohol) was 2:1 and the feed rate was 1.65 h?1 for high ethylbenzene conversion and 4-t-BEB selectivity. Time-on-stream studies showed slow catalyst deactivation. Highly crystalline ZSM-5 zeolites are therefore better than a commercial zeolite for para-selective alkylation of alkyl aromatics. They do not require much post-modification for high para selectivity. A fluoride medium is therefore better than an alkaline medium for obtaining highly crystalline para-selective ZSM-5 zeolites. | PUSHPARAJ Hemalatha MANI Ganesh MUTHIAHPILLAI Palanichamy VELAYUTHAM Murugesan PARK Yong-Ki CHOI Won Choon JANG Hyun Tae | 2013 | 催化学报2013，34，2： | 2 |
| 2 | Reduced semen quality in patients with testicular cancer seminoma is associated with alterations in the expression of sperm proteins显示文摘Testicular cancer seminoma is one of the most common types of cancer among men of reproductive age.Patients with this condition usually present reduced semen quality,even before initiating cancer therapy.However,the underlying mechanisms by which testicular cancer seminoma affects male fertility are largely unknown.The aim of this study was to investigate alterations in the sperm proteome of men with seminoma undergoing sperm banking before starting cancer therapy,in comparison to healthy proven fertile men(control group).A routine semen analysis was conducted before cryopreservation of the samples(n=15 per group).Men with seminoma showed a decrease in sperm motility(P=0.019),total motile count(P=0.001),concentration(P=0.003),and total sperm count(P=0.001).Quantitative proteomic analysis identified 393 differentially expressed proteins between the study groups.Ten proteins involved in spermatogenesis,sperm function,binding of sperm to the oocyte,and fertilization were selected for validation by western blot.We confirmed the underexpression of heat shock-related 70 kDa protein 2(P=0.041),ubiquinol-cytochrome C reductase core protein 2(P=0.026),and testis-specific sodium/potassium-transporting ATPase subunit alpha-4(P=0.016),as well as the overexpression of angiotensin I converting enzyme(P=0.005)in the seminoma group.The altered expression levels of these proteins are associated with spermatogenesis dysfunction,reduced sperm kinematics and motility,failure in capacitation and fertilization.The findings of this study may explain the decrease in the fertilizing ability of men with seminoma before starting cancer therapy. | Tania R Dias Ashok Agarwal Peter N Pushparaj Gulfam Ahmad Rakesh Sharma | 2020 | Asian Journal of Andrology2020，22，1： | 2 |
| 3 | Anti-diabetic effects of Cichorium intybus in streptozotocin-induced diabetic rats显示文摘 | P.N. Pushparaj H.K. Low J. Manikandan B.K.H. Tan C.H. Tan | 2006 | Journal of Ethnopharmacology2006，，2： | 2 |
| 4 | Flexible energy storage devices based on nanocomposite paper显示文摘 | Victor L Pushparaj Manikoth M Shaijumon Ashavani Kumar | 2007 | PNAS2007，104，13： | 1 |
| 5 | Anti-diabetic effects of Cichorium intybus in streptozotocin-induced diabetic rats 显示文摘 | Pushparaj P N Low H K Manikandan J | 2007 | J Ethnopharmaeol2007，111，2： | 1 |
| 6 | Flexible energy storage devices based on nanocomposite paper 显示文摘 | Pushparaj V L Shaijumon M M Kumar A | 2007 | Proceedings of the National Academy of Sciences2007，104，13： | 1 |
| 7 | Antidiabetic effect of Cichorium intybus in streptozotocin-induced diabetic rats显示文摘 | Pushparaj PN Low HK Manikandan J | 2007 | J Ethnopharmacol2007，111，2： | 1 |
| 8 | Short interfering RNA (siRNA) as a novel therapeutic显示文摘 | Pushparaj PN Melendez AJ | 2006 | Clin Exp Pharmacol Physiol2006，33，56： | 1 |
| 9 | Preparation of biopolymer fibers by electrospinning from room temperature ionic liquids显示文摘 | VISWANATHAN G MURUGESAN S PUSHPARAJ V | 2006 | Biomacomolecules2006，7，： | 1 |
| 10 | Abdomino-peritoneal tuberculosis masquerading as ovarian cancer:a retrospective study of 26 cases显示文摘 | Sharma JB Jain SK Pushparaj M | 2010 | Arch Gynecol Obstet2010，282，6： | 1 |
| 11 | Growth characteristics of Rhodopseudomonas palustris cultured outdoors,in an underwater tubular photobioreactor,and investigation on photosynthetic efficiency显示文摘 | PIETRO CARLOZZI BENJAMIN PUSHPARAJ ALESSANDRO DEGL'INNOCENTI et d | 2006 | Appl Microbiol Biotechnol2006，73，4： | 1 |
| 12 | siRNA,miRNA,and shRNA : in vivo applications 显示文摘 | Pushparaj PN Aarthi JJ Manikandan J | 2008 | J Dent Res2008，87，11： | 1 |
| 13 | Genital tuberculosis:an important cause of Asherman's syndrome in India显示文摘 | Sharma JB Roy KK Pushparaj M | 2008 | Arch Gynecol Obstet2008，277，1： | 1 |
| 14 | Laparoscopic findings in female genital tuberculosis 显示文摘 | Shanna JB Roy KK Pushparaj M | 2008 | Arch Gynecol Ohstet2008，278，4： | 1 |
| 15 | Flexible energy storage devices based on nanocomposite paper显示文摘 | Pushparaj V L Shaijumon M M Kumar A | | 0，，： | 1 |
| 16 | Antidiabetic effects of Cichorium lntybus in streptozotocininduced diabrtic rats显示文摘 | Pushparaj P N Low H K Manikandan J | 2007 | J Ethnopharmacol2007，111，2： | 1 |
| 17 | RNAi and RNAa-the jin and yang of RNAome显示文摘 | Pushparaj PN Aarthi JJ Kumar SD | 2008 | Bioinformation2008，2，6： | 1 |
| 18 | siRNA, miRNA, and shRNA: in vivo applications显示文摘 | PUSHPARAJ P N AARTHI J J MANIKANDAN J | 2008 | Journal of Dental Research2008，87，11： | 1 |
| 19 | RNAi and R-NAa-The Yin and Yang of RNAome显示文摘 | Pushparaj P N Aarthi J J Kumar S D | 2008 | Bioinformation2008，2，6： | 1 |
| 20 | siRNA, miRNA and shRNA: In vivo applications显示文摘 | Pushparaj P N Aarthi J J Manlkandan J | 2008 | J Dent Res2008，87，11： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员