Varying concentrations

Salinity is one of the most devastating abiotic stresses limiting crop production. Considering this issue, a pot experiment was conducted at Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the boro season (2017-2018) using two rice (Oryza sativa L.) varieties, namely BRRI dhan28 (salt sensitive) and BRRI dhan47 (salt tolerant), to assess the effects of varied salinity levels on the growth and the performance of the rice varieties under salt stress conditions.

10p vibecca 01-10-2024 1 1   Download

In this work, gold nanorods (AuNRs) with well-controlled aspect ratios were prepared using a modified seedgrowth method and covered by TiO2 layers through the hydrothermal reaction to improve stability. Integrating TiO2 with plasmonic rod-like gold nanoparticles could enhance their photo activity by the local surface plasmon resonance (LSPR) effect. AuNRs aspect ratios were controlled by varying the amount of seed solution, reducing agents, surfactant (CTAB), and titanium (IV) but oxide.

7p dianmotminh02 03-05-2024 9 3   Download

This paper presents a method for establishing the exact receptance function of a tapered axially functionally graded (AFG) beam with nonlinear ratios of properties using the Adomian method. In current papers, the Adomian method was applied for linearly tapered beams where the geometric series was used conveniently.

22p dianmotminh02 03-05-2024 5 2   Download

The content of the thesis presents the scale and concentration level of total assets of the industry that affect the financial performance of commercial banks; how the effect of equity on financial performance varies between scale thresholds; How does the role of marginal and non-marginal returns on financial performance vary across scale thresholds.

0p angicungduoc11 17-04-2021 33 3   Download

Undoped and Sn-doped ZnO films are deposited on glass substrates using a sol-gel spin coating technique with a doping concentration varying from 0% to 3 mol. The effects of Sn doping concentration on surface morphology, structural and optical properties of the ZnO films are investigated using scanning electron microscopy, an X-ray diffractometer and a UV-Vis-NIR system.

6p tamynhan9 02-12-2020 11 3   Download

One of the easiest and efficient way of water conservation to solve drinking water scarcity is rooftop water harvesting. To evaluate the performance of the first flush with micromesh filter system, inflow and outflow of the rooftop water samples were analysed for pH, EC, TDS, SAL and TSS parameters. In general, the PH, electrical conductivity, and TDS of the roof water samples were within the drinking water standards and the first flush with micromesh filter system was found to reduce TDS values.

9p chauchaungayxua6 26-06-2020 15 2   Download

This study investigated the anti-diabetic effect of ethanolic bark extract of Khaya senegalensis in Alloxan-induced diabetic albino Wistar rats. Sixty (60) female albino rats were randomly placed into six (6) study groups of ten (10) animals designated as; nondiabetic control (NDC), diabetic control (DC), and diabetic extract treated groups (DSB1, DSB2, and DSB3) receiving varying extract concentration of 100mg/kg, 200mg/kg, and 400mg/kg body weight respectively.

17p cothumenhmong5 17-05-2020 9 1   Download

Litchi is considered a crop difficult to propagate through micropropagation and obtaining contamination free cultures is first and foremost requirement of tissue culture. So the present investigation was carried out to standardize the sterilization procedure of nodal segment and leaf explants of Litchi chinensis Sonn. cv. Purbi. Two surface sterilizing agents viz. HgCl2 and NaOCl were used at varying concentrations and durations.

5p caygaocaolon4 04-04-2020 12 1   Download

Colloidal silver nanoparticles were synthesized by
Co-60 ray irradiation of Ag+ in aqueous solution containing polyvinyl alcohol (PVA) as stabilizer and 0.5 M ethyl alcohol as free radical (OH• ) scavenger. The effect of Ag+ concentration which varied from 1 to 50 mM on the saturated conversion dose (D) of Ag+ into Ag determined by UV-vis spectroscopy and the size of Ag nanoparticles characterized by transmission electron microscopy (TEM) were investigated. The dependence of D (kGy) and average size (d, nm) of Ag nanoparticles on Ag+ concentration was found out to be as: D (kGy) = 0.

5p uocvong03 24-09-2015 36 4   Download

Several experiments were conducted to study the effects of Diazinon on snakehead fish Channa striata in laboratory conditions following static none-renewable system. Four stages including embryo, larval, finished yolk, and started air-breath were completed randomly exposed to Diazinon (concentration varies from 0.15 – 19.2 mg/L) for assessing negative effects of this insecticide to the species. Results show that these Diazinon concentrations didn’t affect on hatching, fitness (except concentration of 19.2mg/L).

9p kem3mau 13-06-2013 49 5   Download

Fluorescence ratio imaging indicates that immobilized, aspirin-treated platelets, loaded with Fura-2, respond to inositol 1,4,5-trisphosphate- (InsP3)-generating agonists such as thrombin by high-frequency, irregular rises in cytosolic [Ca 2+ ] i with spikes that vary in peak level and peak-to-peak interval. This differs from the regular [Ca 2+ ] i oscillations observed inother, larger cells.

10p research12 29-04-2013 42 3   Download

The antimitotic depsipeptide dolastatin 15 was radiolabeled with tritium in its amino-terminal dolavaline residue. Dolastatin 15, although potently cytotoxic, is a relatively weak inhibitor oftubulin assembly and does not inhibit the binding ofany other ligand to tubulin. The only methodo-logy found to demonstrate an interaction between the dep-sipeptide and tubulin was Hummel–Dreyer equilibrium chromatography on Sephadex G-50 superfine. The average apparent Kd value obtained in these studies was about 30lM, with no difference observed when column size or tubulin concentration was varied....

7p tumor12 20-04-2013 49 4   Download

Using synchrotron X-ray diffraction the thermal behaviour was studied of the cubic phases in the 1-monooleoyl-rac-glycerol (MO)/n-octyl-b-D-glucopyranoside (OG)/ 2 H2O system with 58 or 45 wt % MO concentration and varying OG/ 2 H2O contents. These MO contents correspond to a Pn3mcubic single-phase or aPn3mcubic phase in excess water on the binary MO/water axis of the ternary phase diagram. The cubic liquid crystalline phases are stable with small fractions of OG, while higher OG concentrations trigger a cubic-to-lamellar phase transition. ...

10p tumor12 20-04-2013 38 3   Download

Amathematicalmodel hasbeendevelopedtostudy theeffect of external tryptophan on the trp operon. The model accounts for the effect of feedback repression by tryptophan through the Hill equation. We demonstrate that the trp operonmaintains an intracellular steady-state concentration in a fivefold range irrespective of extracellular conditions. Dynamic behavior of thetrp operon corresponding to varying levels of extracellular tryptophan illustrates the adaptive nature of regulation.

8p fptmusic 16-04-2013 49 4   Download

Fatty acids can stimulate the secretory activity of insulin-producing beta-cells. At elevated concentrations, they can also be toxic to isolated beta-cells. This toxicity varies inversely with the cellular ability to accumulate neutral lipids in the cytoplasm. To further examine whether cytoprotection can be achieved by decreasing cytoplasmic levels of free acyl moieties, we investigated whether palmitate toxicity is also lowered by stimulating its b-oxidation.

12p media19 05-03-2013 56 2   Download

This study tests the purported signal amplification capability of the gluta-mine synthetase (GS) regulatory cascade inEscherichia coli. Intracellular concentrations of the pivotal regulatory protein GlnB were modulated by varying expression of its gene (glnB). Neither glnBexpression nor PII * (i.e. the sum of the concentration of the P II-like proteins GlnB and GlnK) had control over the steady-state adenylylation level of GS when cells were grown in the presence of ammonia

17p viettel02 22-02-2013 36 2   Download

Lithium fluoride (LiF) thermoluminescent powder doped with Mg, Cu, Na, and Si as activators was prepared. The dopant concentrations were varied over the wide ranges as follows: Mg (0.05 - 1.0 mol$\%$), Cu (0.01 - 1.0 mol$\%$), Na,Si (0.3 - 2.4 mol$\%$). The results indicated that the Mg and Cu activators are crucial dopants in the LiF:Mg,Cu,Na,Si phosphors. The LiF:Cu,Na,Si samples without Mg exhibit a peak at low temperature in the thermoluminescent glow curve and in the absence of Cu, the LiF:Mg,Na,Si samples exhibit a peak at high temperature.

8p tuanlocmuido 19-12-2012 35 2   Download

Research Reports IWMI’s mission is to improve the management of land and water resources for food, livelihoods and environment. In serving this mission, IWMI concentrates on the integration of policies, technologies and management systems to achieve workable solutions to real problems—practical, relevant results in the field of irrigation and water and land resources.

39p nhatro75 12-07-2012 67 8   Download

Most foods contain some folate. The highest concentrations are found in liver, yeast, spinach, other greens, and nuts (100 µg/100 g). The total folate content of an average Western diet is ~250 µg daily, but the amount varies widely according to the type of food eaten and the method of cooking. Folate is easily destroyed by heating, particularly in large volumes of water. Total-body folate in the adult is ~10 mg, the liver containing the largest store. Daily adult requirements are ~100 µg, so stores are only sufficient for 3–4 months in normal adults and severe folate deficiency may...

5p thanhongan 07-12-2010 66 3   Download