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Central Composite Design Method for the Preparation, Stability and Properties of Water-in-Diesel Nano Emulsions

Advances in Chemical Engineering and Science 2018年第3期8卷 176-189页

作者： Ali Ghufran Khidhir adel sharif hamadi Department of Petroleum Technology University of Technology Baghdad Iraq

Water in diesel nano-emulsion (WiDNE) due to their nano size, kinetically stable gives its beneficial in commercial and environmental aspects. However, the capability of this fuel strongly depends on the method of preparation, stability and their physic-chemical properties. Central composite design (CCD) method was used to optimize variable interactions in order to obtain maximum stability. Methodology RSM method with six independent variables was selected in order to understand the impacts on droplet size. The response surface and 3D plots of the quadratic polynomial model were created for studying the combination effect on response. Dynamic light scattering DLS technique was used for measuring of droplet sizes. The analysis result by ANOVA was with 95% confidence displaying F value model was 52.82. The results displayed model was fulfilled with the assumptions of ANOVA. This study has relied on Design Expert software to locate the optimum droplet size situations. The measured diameter is 26 nm, with 0.0297 errors between actual conditions and measured value. The optimum blend properties of prepared WiDNE fuel were compared with conventional diesel. Improvements in physical properties were observed in presence of water in WiDNE.

关键词： Water in Diesel Optimization Central Composite Design Stability

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Potentiality of Different Seed Priming Agents to Mitigate Cold Stress of Winter Rice Seedling

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Phyton-International Journal of Experimental Botany 2021年第5期90卷 1491-1506页

作者： Md.Parvez Anwar Md.Ariful Islam Khalid A.K.M.Mominul Islam Sabina Yeasmin sharif Ahmed adel Hadifa Ismail A.Ismail Akbar Hossain Ayman EL Sabagh Agro Innovation Laboratory Department of AgronomyBangladesh Agricultural UniversityMymensingh2202Bangladesh International Rice Research Institute Bangladesh OfficeDhaka1213Bangladesh Rice Research and Training Center Field Crops Research InstituteAgricultural Research CenterSakha33717Egypt Department of Biology College of ScienceTaif UniversityTaif21944Saudi Arabia Bangladesh Wheat and Maize Research Institute Dinajpur5200Bangladesh Department of Agronomy Faculty of AgricultureKafrelsheikh UniversityKafr Elsheikh33516Egypt

Seed priming has proved to be an effective pre-germination seed invigoration technique for different crops to improve seed and seedling performance under different abiotic *** Bangladesh,winter rice is very often exposed to cold waves just after sowing in the nursery bed resulting in poor seed germination and seedling emergence,yellowish and thin seedlings production,and a very low survival *** priming may mitigate the cold stress during seed germination and seedling emergence and helps in the quality seedling production of winter *** evaluate the efficacy of different seed priming techniques in increasing seedling emergence,growth,vigor and survivability of winter rice cultivars under cold stress,a pot experiment was conducted at the Department of Agronomy,Bangladesh Agricultural University during December 2018 to January *** experiment comprised two factors,(A)Winter rice variety namely,(i)BRRI dhan29 and (ii)BRRI dhan36;(B)Seed priming agent namely (i)Control(no priming),(ii)20000 ppm NaCl,(iii)30000 ppm NaCl,(iv)20000 ppm KCl,(v)30000 ppm KCl,(vi)20000 ppm CaCl2,(vii)30000 ppm CaCl2,(viii)50 ppm CuSO4,(ix)75 ppm CuSO_(4),(x)10000 ppm ZnSO4,(xi)15000 ppm ZnSO4,(xii)2 ppm Na2MoO4,(xiii)3 ppm Na2MoO4,(xiv)100 ppm PEG(Polyethylene glycol 4000)and (xv)150 ppm *** were sown on two different dates viz.,1st December and 1st January so that seedlings are exposed to cold stress at different *** experiment was laid out in a completely randomized design(CRD)with three *** indicated that(in most of the cases)seed priming has a positive impact on seedling emergence rate(%),root length,shoot length,root shoot ratio,root dry weight,shoot dry weight,seedling dry weight and survival rate(%).Among the priming agents,KCl and CaCl2 performed best;while priming with NaCl and PEG showed no advantages over no priming for both the sowing *** general,BRRI dhan36 performed better than BRRI dhan29 in terms of seedling growth because

关键词： Seed invigoration seedling emergence seedling mortality seedling growth low temperature stress

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Vasopressin-induced hyponatremia in an adult normotensive trauma patient:A case report

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World Journal of Critical Care Medicine 2023年第1期12卷 35-40页

作者： Maulik K Lathiya Emily Pepperl Daniel Schaefer Hussam Al-sharif adel Zurob Susan M Cullinan Antonios Charokopos Department of Emergency Medicine Mayo Clinic Health SystemEau ClaireWI 54703United States Department of Pulmonary and Critical Care Medicine Mayo Clinic Health SystemEau ClaireWI 54703United States

BACKGROUND Arginine vasopressin is a neuropeptide produced in the hypothalamus and released by the posterior pituitary *** addition to maintaining plasma osmolarity,under hypovolemic or hypotensive conditions,it helps maintain plasma volume through renal water reabsorption and increases systemic vascular *** synthetic analogues are widely used in the intensive care unit as a continuous infusion,in addition to hospital floors as an intravenous or intranasal dose.A limited number of cases of hyponatremia in patients with septic or hemorrhagic shock have been reported previously with *** report for the first time a normotensive patient who developed vasopressin-induced *** SUMMARY A 39-year-old man fell off a forklift and sustained an axial load injury to his *** had no history of previous *** was normal except for motor and sensory *** Imagine test showed endplate fracture at C7 and acute traumatic disc at C7 with cortical *** underwent cervical discectomy and fusion,laminectomy,and posterior instrumented *** intensive care unit admission post-surgery,he developed hyponatremia of 121-124 mEq/L post phenylephrine and vasopressin infusion to maintain blood pressure *** was evaluated for syndrome of inappropriate secretion of antidiuretic hormone,hypothyroid,adrenal-induced,or diuretic-induced *** the end of extensive evaluation for the underlying cause of hyponatremia,vasopressin was *** was also put on fluid restriction,given exogenous desmopressin,and a dextrose 5%in water infusion to prevent osmotic demyelination syndrome caused by sodium overcorrection which improved his sodium level to 135 mmol/*** The presentation of vasopressin-induced hyponatremia is uncommon in normotensive patients,and the most difficult aspect of this condition is determining the underlying cause of *** case illustrates that,considering the vast diffe

关键词： Hyponatremia Vasopressin Normotensive Therapy Case report

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