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211.
Jameel R. Al-Obaidi Norasfaliza Rahmad Nursyuhaida Mohd Hanafi Mohammed Farouq Halabi Abdulrahman A. Al-Soqeer 《Acta Physiologiae Plantarum》2017,39(8):179
Jojoba is a dioecious shrub with female and male flowers in separated individuals. The plant native to North and Central American deserts, it’s cultivated in many other places worldwide for its valuable liquid wax. The male-biased ratio in cultivated jojoba affects the yield. To develop protein molecular markers for early gender differentiation, comparative proteomic study been conducted on male and female leaves. Using gel-based proteomic, 45 proteins were identified representing 19 different proteins with 18 known functions. The identified proteins were involved in photosynthesis, energy, metabolism and the respond to biotic and abiotic stress. Ribulose-1,5-bisphosphate carboxylase (Rubisco) and ATP synthase were the most abundant proteins in both male and female of jojoba leaves, both were upregulated in male compared to female. Both proteins have the potential to serve as protein biomarkers for early differentiation between male and female in jojoba plant. These results could help in better understanding the molecular mechanism of gender differentiation in jojoba. 相似文献
212.
213.
Muhammad Nasir Amin Salman Zaheer Abdulrahman Ali Alazba Muhammad Umair Saleem Muhammad Umar Khan Niazi Nauman Khurram Muhammad Tahir Amin 《PloS one》2016,11(2)
Structural hollow sections are gaining worldwide importance due to their structural and architectural advantages over open steel sections. The only obstacle to their use is their connection with other structural members. To overcome the obstacle of tightening the bolt from one side has given birth to the concept of blind bolts. Blind bolts, being the practical solution to the connection hindrance for the use of hollow and concrete filled hollow sections play a vital role. Flowdrill, the Huck High Strength Blind Bolt and the Lindapter Hollobolt are the well-known commercially available blind bolts. Although the development of blind bolts has largely resolved this issue, the use of structural hollow sections remains limited to shear resistance. Therefore, a new modified version of the blind bolt, known as the “Extended Hollo-Bolt” (EHB) due to its enhanced capacity for bonding with concrete, can overcome the issue of low moment resistance capacity associated with blind-bolted connections. The load transfer mechanism of this recently developed blind bolt remains unclear, however. This study uses a parametric approach to characterising the EHB, using diameter as the variable parameter. Stiffness and load-carrying capacity were evaluated at two different bolt sizes. To investigate the load transfer mechanism, a component-based study of the bond and anchorage characteristics was performed by breaking down the EHB into its components. The results of the study provide insight into the load transfer mechanism of the blind bolt in question. The proposed component-based model was validated by a spring model, through which the stiffness of the EHB was compared to that of its components combined. The combined stiffness of the components was found to be roughly equivalent to that of the EHB as a whole, validating the use of this component-based approach. 相似文献
214.
Abdulrahman Nabeel Ibrahim Meram Joseph Jensa Mariam Elkoubatry Hanan Mahmoud Al-Shamasi Al-Anood Rayan Menatallah Gadeau Alain Pierre Ahmed Rashid Eldassouki Hussein Hasan Anwarul Mraiche Fatima 《Molecular and cellular biochemistry》2022,477(6):1865-1872
Molecular and Cellular Biochemistry - Diabetes mellitus (DM)-induced cardiac morbidities have been the leading cause of death among diabetic patients. Recently, sodium-glucose cotransporter-2... 相似文献
215.
Ahmad K. Hegazy Abdulrahman A. Alatar M. Ajmal Khan Jon Lovett-Doust 《Folia Geobotanica》2014,49(2):175-192
The seed bank of Neurada procumbens, a prostrate annual common in sandy desert habitats, is vulnerable to surface disturbances. Moreover, its seeds are highly heteromorphic, having both spinose and non-spinose sides, which affects both the vertical distribution of seeds and diaspores, and the precise position in which they lie in the soil. Here we explore the ecological implications of two factors, “safe sites” within habitats and seed orientation or “safe sides”, on seedling establishment and the seed bank. In three natural populations, the vertical distribution of buried, germinable diaspores decreased with soil depth. Most diaspores occurred at the surface (0–1 cm below the surface), while none were observed below 10 cm. Seedling emergence decreased with depth and reached zero in diaspores below 5 cm. Seedling emergence also proved highly sensitive to the orientation of diaspores in soil. Diaspores lying on their smooth side with the spinose upper side directed upwards reached the highest seedling emergence of 61 %. Root length ranged from 10 to 16 cm, and the root to shoot ratio varied between 22.8 and 30.3 cm, depending on diaspore size. Diaspores near the surface may constitute a more transient component of the seed bank, as few of these remained viable for more than a year. Persistence of Neurada seed banks seems to depend not only on vertical movement of diaspores among habitat “safe sites” but also on different seed position alternatives. 相似文献
216.
Abdulrahman M. Almadini Ahmed I.H. Ismail Faleh A. Ameen 《Saudi Journal of Biological Sciences》2021,28(2):1451-1458
Al-Hassa oasis is considered as the biggest irrigated one in the World, being well known for its extensive date palm cultivation with an estimate of at least three million trees. The aim of this study is to evaluate the impact of soil fertilization practices on the productivity potential of date palm trees grown under the climatic conditions of Al-Hassa oasis, KSA. The opinions of 258 active farmers were randomly surveyed using specifically designed questioners that were also fortified with personal communications. The size of the samples was designated in accordance to Cocoran equation. The total samples were allocated into two major parts (193 for the old oasis and 65 for the new oasis). Results showed that the farm features (utilized agricultural area (UAA), ownership and labors) are different in both parts of the oasis. Fertilization practices (quantity applied per area or per tree) were diverse causing dissimilar productivity potentials (total or per area or tree). The average production of a tree in the old oasis is 81.4 kg, whilst it is 54.6 kg in the new oasis. Date palm production is significantly affected by total number of trees, applied fertilizer quantity, cultivated area and labor power. The impact of these factors is unlike between the two parts of the oasis. It is then concluded from the study that there are sincere needs for improving the soil fertilization practiced for the date palm trees grown in the Al-Hassa oasis, KSA in order to increase their productivity potential and hence improve the farmers' income. 相似文献
217.
Abdulrahim Abu-Jayyab Ezz-Eddin S. M. El-Denshary Abdulrahman M. Ageel Mohamed Rafik Dakkak 《Bioscience reports》1987,7(10):751-755
Short-term and long-term effects of bromocriptine mesylate (10 mg/kg i.p.) on cyclic AMP contents of the liver and some endocrine glands have been investigated in the presence and absence of sulpiride (10 mg/kg i.p.). Results revealed that bromocriptine caused significant elevations in the cyclic AMP contents of the liver and reduction in its adrenocortical content. Bromocriptine effect on the adrenal cortex was antagonized by sulpiride, whereas its effect on the liver was not changed. Bromocriptine did not change the, cyclic AMP content in the thyroid gland or the ovary. 相似文献
218.
Abdulrahman Shahul Hameed Akihiro Katogi Kei Kubota Shinichi Komaba 《Liver Transplantation》2019,9(45)
K‐ion batteries (KIBs) are promising for large‐scale energy storage owing to various advantages like the high abundance of potassium resources in the Earth's crust, high operational potentials, and high power due to fast diffusion of K+ ions. However, to realize the practical application of KIBs, electrode materials are needed with high operational voltage, good capacity, long cycle life, and low‐cost. This work reports a layered open framework material, K2[(VOHPO4)2(C2O4)], composited with reduced graphene oxide (rGO) as a 4 V positive electrode material for KIBs. The material is prepared by a simple precipitation reaction at room temperature. The material demonstrates reversible K‐extraction/insertion with conventional carbonate ester KPF6 solutions; however, with low specific capacity and low Coulombic efficiency. A high discharge capacity of >100 mAh g?1 with good cycling stability and higher Coulombic efficiency is achieved in a highly concentrated electrolyte, 7 mol kg?1 of potassium bis(fluorosulfonyl)amide (KFSA) in dimethoxyethane (DME) at 0.1 C rate. Due to the facile migration of K+ ions in the framework, the material exhibits excellent rate capability with a discharge capacity of 80 mAh g?1 at 10 C rate, and a good capacity retention of 67% after 500 cycles at 2 C rate. 相似文献
219.
Observations on the diagenesis of the Lower Triassic Sudair Formation,Abu Dhabi,United Arab Emirates
Summary The Lower Triassic Sudair Formation in the United Arab Emirates (U.A.E.) ranges in thickness from 178–297 m and comprises
three units consisting of interbedded limestone, argillaceous limestone, dolomite and anhydrite. The Lower Unit contains variable
energy shallow marine, slightly argillaceous mudstones and subordinate ooliticpeloidal packstones and grainstones with minor
dolomite and anhdrite. The Middle Unit consists of argillaceous and ferroan dolomite deposited in a lagoonal to supratidal
setting. The Upper Unit comprises argillaceous mudstones and dolomites at the base grading upward into argillaceous anhydrite
deposited in a restricted shallow marine to sabkha setting. These units represent the transition from a carbonate/evaporite
shelf with significant terrestrial input to an evaporitic platform defined by an overall shallowing-upward sequence.
Diagenesis in the Sudair includes extensive leaching of grain-supported carbonates, partial to complete dolomitization, evaportie
formation, clay nucleation, fracturing/pressure solution, late cementation by coarse calcite spar and saddle dolomite, and
hematite formation. These processes have had the cumulative effect of reducing the secondary porosity. Dolomitization occurred
in two stages: an earlier progression of rhombic-sucrosic-aphanocrystalline dolomite, and a later coarse crystalline and saddle
dolomite fracture fill. 相似文献
220.
Comparison of six different populations of Xanthium strumarium grown under controlled laboratory conditions revealed a general pattern of greater chlorophyll levels with increase in latitude of origin. Indications of ultrastructural differences were found, with plants containing greater chlorophyll levels having more chloroplasts with greater membrane development compared to plants of this species from more southern or lower latitude habitats. 相似文献