نتایج جستجو برای: like shaped
تعداد نتایج: 717951 فیلتر نتایج به سال:
شوری خاک یکی از عوامل مهم محیطی است که منجر به کاهش عملکرد گیاهان زراعی می شود. شناخت مکانیسم های مقاومت گیاهان در برابر تنش ها می تواند به شناسایی ژن های مقاومت و کاربرد آن ها در اصلاح گیاهان و افزایش محدوده کشت گیاهان منجر شود. روش آنالیز expressed sequence tag (est) و داده های ریزآرایه راهی سریع و منطقی برای شناسایی ژن های نامزد جدید برای مقاومت به تنش ها می باشد. در این تحقیق تعداد 2 کتابخا...
The giant cell fibroma is a localized reactive proliferation of fibrous tissue, much like the irritation fibroma. It usually small, may have be sessile/peduncalated. It is painless, often has lobules/ nodules on its surface. It contains cells with large, stellate shaped fibroblasts, near the surface of the fibrous mass, beneath the overlying epithelium. A female patient aged 45 years presented ...
The aim of the present investigation was to assess neuroprotection exerted by GABA (100 nM-100 mM) in rat cortical brain slices subjected to oxygen-glucose deprivation and reoxygenation. Neuronal injury and neuroprotection were assessed by measuring the release of glutamate and lactate dehydrogenase and tissue water content. Results demonstrate that GABA exerted neuroprotective effects accordin...
Cell shape in most eubacteria is maintained by a tough external peptidoglycan cell wall. Recently, cell shape determining proteins of the MreB family were shown to form helical, actin-like cables in the cell. We used a fluorescent derivative of the antibiotic vancomycin as a probe for nascent peptidoglycan synthesis in unfixed cells of various Gram-positive bacteria. In the rod-shaped bacterium...
In this paper the transmittance of metal-insulator-metal (MIM) waveguides containing semi-circular ring shaped and rectangular ring shaped grooves are investigated. By varying groove parameters their effects on the transmittance of the MIM waveguides are investigated. The results show that the transmittance spectra of the waveguides have maximum and minimum points, and by using appropriate para...
Diffusion of many successful communication technologies, like telephony and television technology, follows an almost perfect S-shaped curve. This curve implies that, after their introduction, subsequent sales of products on the basis of these technologies can be predicted accurately. However, the diffusion of other breakthroughs in communication technologies, like interactive television, videot...
The first and second instars of Lecanodiaspis tingtunensis are described and illustrated. First instars are distinguished from other species of Lecanodiaspis by the arrangement of dorsal 8-shaped pores in six complete longitudinal rows and a partial row in the thoracic region and the number of labial, anal plate, and spiracular setae. Second instars are dimorphic with males possessing well deve...
A new compact printed tri-band antenna for WLAN/WiMAX applications is presented. The proposed antenna consists of three inverted L-shaped strips whose geometry looks like a “bent fork”. These strips are attached to the feed line through a horizontal strip. By optimizing the geometries of the inverted L-shaped strips, distinct resonant points can be effectively created for different frequency ba...
We report a photothermal nanoblade that utilizes a metallic nanostructure to harvest short laser pulse energy and convert it into a highly localized and specifically shaped explosive vapor bubble. Rapid bubble expansion and collapse punctures a lightly-contacting cell membrane via high-speed fluidic flows and induced transient shear stress. The membrane cutting pattern is controlled by the meta...
Comb-shaped amphiphilic polymers are rapidly emerging as an alternative approach to amphiphilic block copolymers for hydrophobic drug solubilization. These polymers consist of a homopolymer or copolymer backbone to which hydrophobic and hydrophilic pendant groups can be grafted resulting in a comb-like architecture. The hydrophobic pendants may consist of homopolymers, copolymers and other low-...
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