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磷诱发棉花缺锌的机制

核农学通报 1987年第4期 22-25页

作者： I.cakmak 姚允寅

在石灰质土壤上种植棉花,特别是长期连作之后,植株缺锌是一种常见的微量元素缺乏症。大量施磷时,土壤(特别是含有效磷低的)亦常缺锌。葡萄、马铃薯、黄秋葵等植物的缺锌研究已有报道。缺锌提高了植株的磷吸收率和向茎转移率,后者又反过... 详细信息

在石灰质土壤上种植棉花,特别是长期连作之后,植株缺锌是一种常见的微量元素缺乏症。大量施磷时,土壤(特别是含有效磷低的)亦常缺锌。葡萄、马铃薯、黄秋葵等植物的缺锌研究已有报道。缺锌提高了植株的磷吸收率和向茎转移率,后者又反过来加重其缺锌症状。此种磷一铧交互效应谓之磷诱发缺锌。本研究旨存进一步了解磷-锌交互效应及缺锌棉叶磷中毒的机制。

关键词： Zn 吸收率转移率吸收系数棉株液体培养基营养液缺锌

Lipoma.within inverted Meckel’s diverticulum a. a.ca.se of recurrent pa.tia. intestina. obstruction a.d hemorrha.e: a.ca.e report a.d review of litera.ure

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World Journa. of Ga.troenterology 2007年第7期13卷 1141-1143页

作者： Güldeniz Ka.a.eniz cakmak a.i Ugur Emre Oge Ta.cila. Sibel Bekta. Bulent Ha.di Ua. Okta. Irkorucu Kema. Ka.a.a.a.Yucel Ustunda. Musta.a.Comert Depa.tment of Surgery Zonguldak Karaelmas Uni-versity School of Medicine Kozlu-Zonguldak Turkey Depa.tment of Pa.hology Zonguldak Karaelmas University School of Medicine Kozlu-Zonguldak Turkey Depa.tment of Ga.troenterology Zonguldak Karaelmas University School of Medicine Kozlu-Zonguldak Turkey

Lipoma.within a. inverted Meckel's diverticulum presen- ting with hemorrha.e a.d pa.tia. intestina. obstruction is a. exceptiona. clinica. entity. We report a.ca.e of 47-yea.-old ma.e with a.history of recurrent episodes of pa.tia. intestina. obstruction a.d melena.due to a.subserosa. lipoma.loca.ed in the ba.e of a. inverted Meckel's diverticulum. a.cording to our knowledge, this is the first ca.e of a.lipoma.within a.Meckel's diverticulum giving rise to this clinica. scena.io without the existence of heterotrophic ga.tric or pa.crea.ic tissues.

关键词：脂肪瘤盲肠囊肠阻塞肠出血

Ra.e etiology of mecha.ica. intestina. obstruction: a.domina. cocoon syndrome

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World Journa. of Clinica. Ca.es 2014年第11期2卷 728-731页

作者： Yener Uzunoglu Fa.ih a.tintopra. Omer Ya.kin Ya.emin Gunduz Guner cakmak Orha. V Ozka. Fehmi Celebi Depa.tmentof Genera. Surgery Sakarya University Research and Educational Hospital 54100 Sakarya Turkey Depa.tment of Genera. Surgery Faculty of Medicine Sakarya University 54100 Sakarya Turkey Depa.tment of Ra.iology Faculty of Medicine Sakarya University 54100 Sakarya Turkey

a.domina. cocoon syndrome is a.ra.e ca.se of intestina. obstruction with unknown etiology. Dia.nosis of this syndrome, which ca. be summa.ized a. the sma.l intestine being surrounded by a.fibrous ca.sule not conta.ning the mesothelium, is difficult in the preopera.ive period. a.47-yea.-old ma.e pa.ient wa. referred to the emergency depa.tment with compla.nts of a.domina. pa.n, na.sea. a.d vomiting for two da.s. The a.domina. computed tomogra.hy exa.ina.ion detected dila.ed sma.l intestina. loops conta.ning a.r-fluid levels clustered in the left upper qua.ra.t of the a.domen a.d surrounded by a.thick, sa.like, contra.t-enha.ced membra.e. During explora.ory surgery, a.ca.sula. structure wa. identified in the upper left qua.ra.t with a.regula. surfa.e tha. wa. solid-fibrous in na.ure. a.-domina. cocoon syndrome is a.ra.ely seen condition, for which the preopera.ive dia.nosis is difficult. The combina.ion of physica. exa.ina.ion a.d ra.iologica. signs, a.d the knowledge of "recurrent cha.a.teristics of the compla.nts" tha. ca. be lea.ned by a.ca.eful history, ma. be helpful in dia.nosis.

关键词： Intestina. obstruction a.domina. cocoon syndrome Preopera.ively dia.nosis a.ult pa.ient

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缺镁胁迫影响冬瓜产量和下一代种子萌发

缺镁胁迫影响冬瓜产量和下一代种子萌发

中国园艺学会2019年学术年会暨成立90周年纪念大会

作者：张白鸽陈晓东 Isma.l cakmak 谢大森陈潇余超然冯建春宋钊曹健何裕志广东省农业科学院蔬菜研究所广东省蔬菜重点实验室 Sa.a.ci University

冬瓜(Beninca.a.hispida.在华南地区广泛种植。该地区的土壤母质化学风化彻底,对阳离子的吸附能力弱。镁离子水合半径大,对土壤胶体的吸附强度小,且华南赤红壤中含有H+、a.3+等与Mg2+拮抗的因素较多,导致镁的含量和生物有效性都较低。... 详细信息

冬瓜(Beninca.a.hispida.在华南地区广泛种植。该地区的土壤母质化学风化彻底,对阳离子的吸附能力弱。镁离子水合半径大,对土壤胶体的吸附强度小,且华南赤红壤中含有H+、a.3+等与Mg2+拮抗的因素较多,导致镁的含量和生物有效性都较低。近年来,冬瓜缺镁现象普遍发生,然而缺镁对冬瓜植株生长和果实产量以及下一代种子萌发的影响还不清楚。采用了田间原位研究方法,以‘铁柱2号’冬瓜为供试材料,设置5个供镁梯度(0、30、60、90、120 kg·hm-2),探讨镁素营养对冬瓜的产量构成要素、源库器官的干物质分配、叶片的叶绿素和镁素含量、叶片和韧皮部的淀粉与蔗糖含量以及下一代种子萌发和幼苗生长情况的影响。两年的试验结果稳定表明,90 kg·hm-2是最优供镁水平,冬瓜产量为130 kg·hm-2,未施镁对照的产量为114 kg·hm-2,即缺镁造成减产12.3%。缺镁时,冬瓜果实长度、直径和果肉硬度都不同程度降低。缺镁胁迫显著影响冬瓜后代种子和幼苗活力。与供镁充足的果实中获取的种子相比,受到胁迫的果实中获取的种子外形小而薄,种子数量降低24.8%,萌发率降低了76.5%,培养15 d后幼苗总干样质量降低了34.4%。由此可见,镁不足降低冬瓜产量和下一代种子种苗质量;补充适宜镁素,可以提高冬瓜产量和制种质量。镁对冬瓜糖代谢的影响始于初果期,此时与供镁充足的处理相比,缺镁植株的叶片镁素含量降低42.8%,但是叶片淀粉和蔗糖含量都显著增加,分别是正常供镁植株叶片的14.7倍和1.6倍,表明缺镁胁迫引起叶片糖类物质累积。但受胁迫的冬瓜韧皮部提取液中的蔗糖含量下降29.4%。随着镁素供应水平的增加,果实干物质占整株干物质的比例呈递增趋势,5个供镁梯度分别为74%、77%、78%、81%和82%。以上结果表明,镁不足限制了叶片光合产物向果实运输。在幼苗期、花期和初果期,镁不足未对叶片的叶绿素含量产生明显影响。进入果实膨大期后,外源供镁水平对冬瓜叶片叶绿素含量的影响达到显著水平,此时与正常供镁植株相比,缺镁胁迫降低叶片叶绿素含量28.6%,表明镁不足对叶片光合性能的影响滞后于对叶片光合产物运输的影响。综上,镁不足时,光合产物在叶片中累积,碳水化合物向果实运输过程受阻,导致果实体积和果肉密度下降,致使冬瓜果实和种子生长受限。缺镁对冬瓜碳水化合物运输的影响早于叶片光合性能变化和表型症状。因此,及时补镁对改善冬瓜生长,提高果实产量和种子活力有重要意义。

关键词：冬瓜镁产量形成可溶性糖叶绿素下一代种子

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用化学发泡剂发泡的PP/EPDM海绵胶

橡胶参考资料 1993年第8期23卷 31-38页

作者： a.Dutta.M.cakmak 李九玉

1 前言聚烯烃热塑性弹性体(TPEs)作为替换热固性橡胶的一类材料逐渐引起人们更多的关注。这些材料主要是热塑性聚烯烃和烯烃基弹性体。

关键词：发泡剂海绵橡胶橡胶发泡

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利用自回归移动平均模型模拟地震地面运动

世界地震工程 1982年第4期 10-18页

作者： N.W.Polhemus a.S.cakmak 陈达生美国普林斯顿大学土木工程系

序言当设计抗御强地震地面运动作用的结构时,需要表征可能作用于结构的运动形式。这些特征依赖于许多因素,包括局部场地条件和期望的地震活动性型式。虽然已知这些不同因素有关的不确定性的范

关键词：时间序列拟合估计值标准差自回归移动平均模型参数数学分析滑动平均 a.MA 地壳运动地面运动

Performa.ce Compa.ison of CVD Grown Ca.bon Na.ofiber Ba.ed on Single-a.d Multi-La.er Gra.hene Oxides in Melt-Compounded Pa..6 Na.ocomposites

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Open Journa. of Composite Ma.eria.s 2019年第2期9卷 99-123页

作者： Elcin Ca.a. Sa.a. Leila.Ha.highi Poudeh Ja.a. Seyyed Monfa.ed Za.ja.i Ilse Letofsky-Pa.st Fevzi cakmak Cebeci Isma.l a.din Yusuf Menceloglu Burcu Sa.er Oka. Rheology La.ora.ory Chemical Engineering DepartmentFaculty of EngineeringIstanbul University-CerrahpasaAvcilar CampusAvcilarIstanbul Kordsa.Teknik Tekstil a.S. IstanbulTurkey Sa.a.ci University Integra.ed Ma.ufa.turing Technologies Resea.ch a.d a.plica.ion Center&Composite Technologies Center of Excellence Teknopark Istanbul34906PendikIstanbulTurkey Fa.ulty of Engineering Technology University of TwenteEnschedeThe Netherlands Institute for Electron Microscopy Graz University of TechnologyGrazAustria Fa.ulty of Engineering a.d Na.ura. Sciences Materials Science and Nano EngineeringSabanci UniversityIstanbulTurkey

In the present study, newly design hybrid na.ostructures were produced by growing long ca.bon na.ofibers (CNF) on single- a.d multi-la.er gra.hene oxide (GO) sheets in the presence of ca.a.yst by chemica. va.or deposition (CVD). Chemica. composition a.a.ysis indica.ed the forma.ion of Fe-C bonds by the deposition of ca.bon a.oms on ca.a.yst surfa.e of Fe2O3 a.d increa.ing in C/O a.omic ra.io confirming CNF growing. These hybrid a.ditives were distributed homogeneously through polya.ide 6.6 (Pa..6) cha.ns by high shea. thermokinetic mixer in melt pha.e. Spectroscopic studies showed tha. the differences in the number of gra.hene la.er in hybrid structures directly a.fected the crysta.line beha.ior a.d dispersion sta.e in polymer ma.rix. Flexura. strength a.d flexura. modulus of Pa..6 na.ocomposites were improved up to 14.7% a.d 14% by the integra.ion of 0.5 wt% CNF grown on multi-la.er GO, respectively, wherea. there wa. a.significa.t loss in flexura. properties of single-la.er GO ba.ed na.ocomposites. a.so, the integra.ion of 0.5 wt% multi-la.er GO hybrid reinforcement in Pa..6 provided a.significa.t increa.e in tensile modulus a.out 24%. Therefore, multi-la.er GO with CNF increa.ed the degree of crysta.linity in na.ocomposites by forming interca.a.ed structure a.d a.ted a. a.nuclea.ing a.ent ca.sing the improvement in mecha.ica. properties.

关键词： Na.opa.ticles Polya.ides Na.ocomposites Mecha.ica. Properties Therma. Properties

Neura. cell a.hesion molecule-180 expression a. a.prognostic criterion in colorecta. ca.cinoma.Fea.ible or not?

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World Journa. of Ga.troenterology 2007年第41期13卷 5476-5480页

作者： Oge Ta.cila. Gldeniz Ka.a.eniz cakmak Isha. Ozel Tekin a.i Ugur Emre Bulent Ha.di Uca. Okta. Irkorucu Kema. Ka.a.a.a.Mesut Gl Hseyin Blent Engin Musta.a.Comert Depa.tment of Surgery Zonguldak Karaelmas UniversityThe School of MedicineKozlu-Zonguldak 67600Turkey Depa.tment of Immunology Zonguldak Karaelmas UniversityThe School of MedicineKozlu-Zonguldak 67600Turkey Depa.tment of Medica. Oncology Zonguldak Karaelmas UniversityThe School of MedicineKozlu-Zonguldak 67600Turkey

a.M: To eva.ua.e the frequency of neura. cell a.hesion molecule (NCa.)-180 expression in fresh tumor tissue sa.ples a.d to discuss the prognostic va.ue of NCa.-180 in routine clinica. pra.tice. METHODS: Twenty-six pa.ients (16 men,10 women) with colorecta. ca.cer were included in the study. Fresh tumor tissue sa.ples a.d ma.roscopica.ly hea.thy proxima. ma.gins of ea.h specimen were subjected to flow-cytometric a.a.ysis for NCa.-180 expression. RESULTS: Flow-cytometric a.a.ysis determined NCa.-180 expression in whole tissue sa.ples of ma.roscopica.ly hea.thy colorecta. tissues. However,NCa.-180 expression wa. positive in only one ca.e (3.84%) with well-differentia.ed Sta.e Ⅱ?disea.e who experienced no a.tive disea.e a. 30 mon follow-up. CONCLUSION: a. a.consequence of the limited number of ca.es in our series,it might not be possible to ma.e a.genera.isa.ion,nevertheless the routine use of NCa.-180 expression a. a.prognostic ma.ker for colorecta. ca.cinoma.seems to be unfea.ible a.d not cost-effective in clinica. pra.tice due to its very low incidence.

关键词：结肠直肠癌预后癌细胞细胞转移

Clinica. eva.ua.ion of submucosa. colonic lipoma.: Decision ma.ing

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World Journa. of Ga.troenterology 2006年第31期12卷 5075-5077页

作者： Oge Ta.cila. Güldeniz Ka.a.eniz cakmak Ba.u Doga. Gün Bülent Ha.di U(?)a. Ha.a. Ba.ba.oglu a.i Cesur a.i Ugur Emre Musta.a.Comert Lütfü Okta. Erdem Selim a.demir Depa.tment of SurgeryZongulda. Ka.a.lma. University School of MedicineKozlu-ZonguldakTurkey Depa.tment of pa.hologyZongulda. Ka.a.lma. University School of MedicineKozlu-ZonguldakTurkey Depa.tment of Ra.iologyZongulda. Ka.a.lma. University School of MedicineKozlu-ZonguldakTurkey Depa.tment of Ga.troenterologyZongulda. Ka.a.lma. University School of MedicineKozlu-ZonguldakTurkey

甚至脂肪瘤是胃肠道的最普通的间充质的良性瘤，征兆的结肠的表示是稀罕的。此处，我们评估了受不了结肠的脂肪瘤的各种各样的尺寸的四个病人并且由不同治疗学的形式来临了。

关键词：黏膜下结肠疾病结肠癌并发症病理机制