Influence Of Different Concentration Research Articles

Influence of poultry manure on the performance of bell pepper (Capsicum annum L)

A pot experiment was conducted at the Botanical garden of University of Ilorin to evaluate the influence of different concentration of poultry manure on the growth and yield of bell pepper (Capsicum annuum). The experiment was a Randomized Block Design with six treatments and three replicates. The treatment details include T1 = Control T2 = 0.5 kg poultry dropping, T3 =1.0 kg poultry dropping, T4 =1.5 kg poultry droppings, T5 = 2.0 kg poultry droppings, T6 = 2.5 kg poultry droppings. Data were collected on Plant height, stem girth, Number of leaves, Leaf area, Number of flowers, chlorophyll contents as well as yield parameters was carried out at the end of the experiment. The result depicts a significant increase in the plant height, numbers of leaves per plant, leaf area, stem girth as well as yield parameter in the plant treated with 2.0 kg poultry manure when compared to the control plants. In conclusion, 2.0 kg poultry manure application should be adopted for soil nutrient amendment in bell pepper cultivation if optimum yield is to be achieved.

Influence of different concentration of ureolytic microorganism on the properties of concrete

Influence of different concentration of ureolytic microorganism on the properties of concrete

Influence of different concentration of ureolytic microorganism on the properties of concrete

Influence of different concentration of ureolytic microorganism on the properties of concrete

Influence of different concentration of polysorbate 20 and carbomer on suspension structure

Influence of different concentration of polysorbate 20 and carbomer on suspension structure

Effect of additive concentration on crystalline surface of ZnO nanostructures morphology for enhanced humidity sensing

Zinc oxide (ZnO) possesses unique nanostructures. Most ZnO nanostructures have yet seen its use as coating for fiber Bragg grating (FBG) sensors. The properties of zinc oxide nanostructure can be greatly influenced by different additives added with the precursor. This study reports on the influence of different concentration of hexamethylenetetramine (HMT) additive towards the humidity sensing capability of zinc oxide coated on FBG sensors. The synthesis of zinc oxide nanostructure was through a modified hydrothermal method. Morphology observation has confirmed a unique hybrid of nanoflake, and porous hemispherical growth of zinc oxide accompanied with elemental analysis for validation. Sensor response towards change in relative humidity is improved by 400% with functional range between 40 and 80 RH%. The concentration of HMT to achieve such performance is 0.05 ​M with a zinc acetate precursor. The device shows potency with its hybrid nanostructure when integrated with FBG based humidity sensor. Due to its functional range, it can detect relative humidity contents in the air for various industries. The fabricated sensing device is suited for use in industries with several magnetic equipment and requiring many sensor nodes for mapping of data.

Interaction between polyene antifungal drug and saturated phospholipid monolayer regulated by calcium ions at the air-water interface

Amphotericin B (AmB) is a polyene antifungal drug, which could directly form pores on the sterol-free phospholipid monolayers. The interaction between AmB and phospholipid can be affected by calcium ions, but the mechanism is still unclear. DPPC is a saturated phospholipid with -PC group, which is often used to simulate the outer cell membrane leaflet. And DPPC is also the main constituent of pulmonary surfactants. In this work, the DPPC monolayer was used as a model membrane to study the effect of calcium ions on the interaction between AmB and phospholipid. The influence of different concentration of calcium ions on the elastic modulus, mean molecular area increment, excess Gibbs free energy and stability of the AmB/DPPC mixed monolayer has been researched at the surface pressure of 7.5 mN/m, 12.5 mN/m and 22.5 mN/m. The AmB/DPPC monolayers at the air-water interface have been observed in real-time by Brewster angle microscope and the microstructure of the Langmuir-Blodgett monolayer films transferred onto the mica have been researched by scanning electron microscope and atomic force microscope. The results showed that calcium ions had a significant influence on the elastic modulus, mean molecular area increment, excess Gibbs free energy, stability and microstructure of the AmB/DPPC monolayer. It has been indicated that the influence of calcium ions on the interaction between AmB and DPPC molecules mainly depended on the effect of calcium ions on the orientation of AmB molecules. The calcium ions could regulate the effect of AmB to the stability of the DPPC monolayer. This regulatory role changed with the different concentrations of calcium ions and the different phase states of the monolayer. This work provides useful information to further understand the influence mechanism of calcium ions on the interaction between AmB and saturated phospholipid with -PC group, which is helpful to find out the effect mechanism of calcium ion on the interaction between AmB and the outer layer of cell membrane or pulmonary surfactants in different phase states and to understand the toxicity mechanism of AmB on the cell membrane or lungs.

The Effect of SPARC on the Proliferation and Migration of Limbal Epithelial Stem Cells During the Corneal Epithelial Wound Healing.

Secreted protein acidic and rich in cysteine (SPARC) shows a specific colocalization with limbal epithelial stem cells (LESCs) in vivo; however, the inherent relationship between SPARC and LESCs is still unclear. This study investigated the effects of SPARC on the maintenance of LESC stemness and corneal wound healing. To test the influence of different concentration of exogenous SPARC on the proliferation of LESCs, cell counting kit-8 assay and 5-ethynyl-2'-deoxyuridine staining were performed and the results indicated that 1 μg/mL SPARC was the optimum concentration for enhanced LESC proliferation. Compared with a control group, SPARC-treated group showed a higher expression of LESC-positive markers p63α, ABCG-2, and Bmi-1, and a lower level of differentiation marker cytokeratin-3 (CK3), thereby suggesting that SPARC could maintain LESC characteristic phenotype and suppress spontaneous epithelial differentiation in vitro. In vivo, exogenous SPARC accelerated the wound-healing process by both the enhancement of LESC proliferation and promoting the migration of the proliferating cells. However, the intact epithelium impaired this function of SPARC by contact inhibition.

Study on the fluorescence of double-emission carbon quantum dots by improved intercept method

The fluorescence mechanism of dual-emission carbon quantum dots (DCQDs) is investigated by the improved intercept method, of which the DCQDs with high quantum yield are synthesized by hydrothermal method by using the precursor of sulfadiazine. The research of the morphology, chemical properties and fluorescence properties on DCQDs, shows that DCQDs have graphene-like structure and well-resolved lattice fringes, and that DCQDs fluorescence emission as well intensity has reversibility between acid and alkaline. Based on the ultraviolet absorption spectrum (UV–vis) of the DCQDs, the band gap of DCQDs is estimated by the improved intercept method. Then, the change law of DCQDs emission wavelength at different excitation wavelengths is studied by using the estimated band gap. It is found that the improved intercept method is well consisted with the emission change law of DCQDs at different excitation wavelengths. In addition, the influence of different concentration of Fe3+ on the estimated band gap of DCQDs shows that the Fe3+ has big influence on the band gap of 3.99 eV and 3.06 eV but almost no effect on band gap of 4.93 eV and 3.67 eV. It indicates that the quenching of Fe3+ to DCQDs may be due to the band gap caused by surface defect is changed by Fe3+. Also, DCQDs are used as probe to detect Fe3+ and used as spray ink. Thereby, the improved intercept method may provide a new direction for researching the fluorescence mechanism of carbon quantum dots.

The influence of different concentration of proFLEX® INTRA on clinical progression and dynamics of laboratory test values in different age patients with knee osteoarthrosis

Introduction: application of hyaluronic acid gel for intraarticular administration is actual topic of modern orthopaedic concerning to its therapeutical efficacy. Objective: to assess the influence of different concentrations of proFLEX® INTRA on the synovial fluid and biochemical blood markers in patients with the 2nd knee osteoarthritis stage in the different age groups. Materials and methods: 30 patients with Kellgren–Lawrence stage II knee osteoarthritis were examined. The first group consisted of 15 patients aged 40–50 years, in the second group the average age of patients was 50–70 years. Each group was divided into 3 subgroups (a, b, c) of 5 patients. In each group the first subgroup of patients received intra-articular 1 injection of proFLEX® INTRA 10 mg/ml 2.0 ml, І-b, ІІ-b — 12 mg/ml 2.5 ml, І-с, ІІ-с — 20 mg/ml 3.0 ml. Results: an inflammatory-dystrophic process in the knee joint of patients was found in both groups, which was more expressed in elderly patients. The dynamics of blood markers in patients of the 1st and 2nd groups after the treatment showed a decreasing the level of inflammatory and dystrophic processes in the knee joints. In the 1st group 1 month after intra-articular injection, the content of glycoproteins and chondroitin sulfates (CS) decreased, did not reach the normative values. In subgroup II-c the level of glycoproteins and CS decreased, the concentration of interleukin-6 (IL-6) remained elevated comparing to subgroups II-a and II-b. Conclusions: it was found that patients with stage II knee osteoarthritis had increased CS and lower levels of hyaluronic acid in their synovial fluid. Markers of inflammation (glycoproteins and IL-6) and destruction markers (CS) in the blood serum changed unidirectionally and indicated a decreasing in the activity of inflammatory process after the injection of hyaluronic acid gel, which was clinically confirmed 1 month after intra-articular injection. In this case, the results after the reexamination of blood biomarkers of patients aged 40–50 years indicated a higher efficiency of hyaluronic acid gel injection with a concentration of 10 and 12 mg/ml, aged 50–70 years — a concentration of 20 mg/ml was confirmed by a decrease in the level of glycoproteins, CS and IL-6 in the blood of patients.

Characteristic of baltic cod mince Gadus Morhua Callarias washed with electrochemical activated water with different concentration of active chlorine ions

The relevance of the above technological process makes it possible to reduce intensity of fish smell and taste, to improve color, to form a more dense structure and to increase shelf life of minced cod. For the first time minced cod was washed by Electrolyzed – water (EW-water) containing various concentrations of active chlorine, as well as free radicals. The influence of different concentration of active chlorine ions on physical and chemical characteristics of washed minced cod was determined. The optimum concentration of active chlorine ions was determined. The amount of removed water-soluble proteins depends on the type of water and the concentration of active chlorine in it. Pure and electrolyzed - water was characterized before and after washing minced cod. The rheological characteristics of minced cod washed by EW - water with different concentrations of active chlorine ions do not change significantly at a concentration in the range from 25 to 150 mg/l. With a concentration of active chlorine ions more than 200 mg / l, the ultimate shear stress increases significantly, the texture of minced cod becomes too dense, which negatively affects the sensory characteristics. Dependence of ratio of protein coefficient and suitability level of minced cod for preparation of high-quality food product was determined. It was found that washing of the minced cod removes water-soluble proteins, which leads to a change in their ratio with salt-soluble proteins, as a result of which the protein coefficient increases by 1.5-2.4 times. The advantage of washing minced cod by electrolyzed – water, which differs in better rheological characteristics compared to minced cod washed with pure water, was justified.

Synthesis of sol–gel derived calcium silicate particles and development of a bioactive endodontic cement

ObjectiveThe aim of this study is to produce sol-gel derived calcium silicate particles (CS) and evaluate the influence of different concentration of calcium tungstate in the physical, chemical, mechanical and biological properties of developed cements. MethodsSol-gel route were used to synthesize calcium silicate particles that were characterized with x-ray difraction, Fourier transformed infrared spectroscopy, scanning electron microscopy, laser diffraction and nitrogen absorption. Cements were formulated with the addition of different concentrations of calcium tungstate (CaWO4), resulting in four experimental groups according to the CS:CaWO4 ratio: CS100 (100:0), CS90 (90:10), CS80 (80:20), CS70 (70:30). The setting time, radiopacity, compressive strength, pH, calcium release, cell proliferation and cell differentiation were used to characterize the cements. ResultsCS particles were succesfully sinthesized. The addition of CaWO4 increased the radiopacity and did not influenced the setting time and the mechanical properties of cements. The pH of distilled water was increased for all groups and the CS100 and CS90 groups presented incresed calcium release. Reduced cell viability was found for CS70 while CS100 and CS90 presented higher ALP activity and % of mineralized nodules after 21 days. SignificanceSol-gel derived CS particles were sucssfully developed with potential to applied for the production of bioactive ceramic cements. The addition of 10% of CaWO4 resulted in cements with adequate properties and bioactivity being an alternative for regenerative endodontic treatments.

Influence of different concentration of hydrogen peroxide on the corrosion behavior of Ti-6Al-4V alloy immersed in physiological solution

The materials used as implants are expected to be highly non toxic and should not cause any inflammatory or allergic reactions in the human body. The success of the biomaterials is mainly dependent on the reaction of the human body to the implant. Titanium and some of its alloys are used as biomaterials for dental and orthopedic applications. The most common grades used are commercially pure titanium and the Ti-6Al-4V alloy. Frequent utilization of titanium and titanium alloys as biomaterials due to their superior biocompatibility, and high corrosion resistance as to form a thin surface oxide layer, and good mechanical properties, as a certain elastic modulus and low density that make that these metals present a mechanical behavior close to those of bones. Strong and totally biocompatible, titanium is one of the few materials that naturally match the requirements for implantation in the human body. Hydrogen peroxide appears in the human body when an inflammation occurs. This research work aims to assess the influence of different concentrations of hydrogen peroxide on the corrosion behavior of Ti-6Al-4V alloy submerged in Hank's physiological solution. Electrochemical methods as Open Circuit Potential and Electrochemical Impedance Spectroscopy were applied for corrosion investigations. The results provide evidence that Ti-6Al-4V corrosion resistance is affected by inflammatory conditions presence in Hank solution.

THE INFLUENCE OF METHOTREXATE ON THE CHANGE IN THE INTENSITY OF CELLULAR DEATH IN THE OVARIES OF DROSOPHILA MELANOGASTER

The purpose of this work to determine the influence of different concentration of methotrexate on apoptosis level in the ovaries of Drosophila melanogaster at normal and elevated temperature during development. In the experiment was used 300 hybrid individuals “Oregon-R x vg” with spontaneous mutation like Beadex phenotype. We investigated six group: control, a group after the methotrexate 400 mkg/ kg medium treatment, a group with 2000 dose, a group with 10000 dose, temperature 28 C treatment and a group after methotrexate 400 and temperature 28 C treatment together. During the experiment we found that apoptosis in checkpoint #1 reaches to maximum values of the group MTX 10000 and of group after the temperature 28 C treatment. There was also a dose dependence on the intensity of apoptosis from increased concentration in checkpoint #1. The experimental group MTX 400 has the maximum intensification of cellular ath in the checkpoint #2, which is not observed in the other groups. Due to the fact that the 400mkg/kg is close to 50LD, probably most of the individuals survive. The high index of the presence of apoptosis observed in control group of this hybrid strain. Correlations between the increase in MTX dosesang degree of ovarian development were not observed. However, the 2000 MTX group has a high rate of atrophy of both ovaries.

Influence of different concentration of cyanobacteria bio fertilizers and NPK fertilizer ratios on growth and volatile oil of rosemary

Influence of different concentration of cyanobacteria bio fertilizers and NPK fertilizer ratios on growth and volatile oil of rosemary

Oxidative Stability of the Meat of Broilers Fed Diets Supplemented with Various Levels of Blackcurrant Extract (Ribes nigrum L.) during Different Time Period

In the 20 d experiment, the influence of different concentration and supplementation period of commercial blackcurrant extract (BC) in the broiler diets on the oxidative stability of breast and thigh meat, as well as selected performance indices, was investigated. A number of 120 fifteen-d-old Hubbard Flex male chicks (initial BW 363.5 ± 22.9 g) were randomly allocated to five groups: the control and four treatments (6 replicates, 4 birds per cage in each group). The BC extract was administrated to treatment groups at two concentrations (1.25 and 2.5 g/kg) and in different periods within the trial (i.e., from 15 to 35 d and from 25 to 35 d of life). Body weight gain (BWG) and feed conversion ratio (FCR) were determined during the 20-d experiment. At d 35, two randomly selected birds from each cage were decapitated, and pectoral and thigh muscles were collected. Extent of lipid oxidation after storage at chilling (2-3°C, 1, and 5 d) and freezing conditions (after 90 d, −18°C) was determined. The chickens’ growth performance and FCR were not affected by the concentrations and periods of BC supplementation. The enrichment of grower diet with 1.25 g/kg of BC extract reduced the malondialdehyde (MDA) formation in frozen thigh muscles (P<0.05), and this effect tended to appear (P<0.089) irrespective of duration of the supplementation period. Significant extent of lipid oxidation process was found in 1-d-chilled pectoral muscles of chickens receiving BC diet for 20 d or diet containing 2.5 g/kg of the extract. The results showed that BC extract may be an efficient source of antioxidants in chicken diet, which may increase oxidative stability of frozen dark meat. However, the conditions and ability of some polyphenols to initiate oxidation processes have not been fully understood and further studies are required.

Assessing the performance of molarity and alkaline activator ratio on engineering properties of self-compacting alkaline activated concrete at ambient temperature

Geopolymer technology concentrates producing eco-friendly binder which can be a permanent solution for replacement of traditional hydraulic binders. The performance benefits and operational energy savings can be accomplished by use of self-compacting alkaline activated concrete commonly known as Self-Compacting Geopolymer Concrete (SCGC). The current study access experimental investigation on influence of different concentration of sodium hydroxide solution (2 M, 4 M, 6 M, 8 M, 10 M and 12 M) and alkaline activator ratio (2, 2.5, 3, 3.5 and 4) fresh properties, compressive strength and durability properties. The industrial by-products such as fly ash and Ground Granulated Blast furnace Slag (GGBS) are effectively used in producing SCGC. In order to avoid heat curing treatment and facilitate ambient curing a part fly ash of was replaced by GGBS. In order to improve fresh properties and to control rapid setting 25% low calcium fly ash and 75% GGBS were used to produce SCGC. Sodium hydroxide and sodium silicate solution were used to activate the source materials. Experimental outcome concluded mix with 10 M and alkaline activator ratio of 4 was nominated as optimum as the mix had better workability, compressive strength and durability performance. The durability of SCGC is expressed in terms of capillary rise, weight loss or deterioration and loss in compressive strength in aggressive environment.

ОЦЕНКА БИОГЕННОЙ НАГРУЗКИ И ЭФФЕКТИВНОСТИ ВЫРАЩИВАНИЯ РУССКОГО ОСЕТРА ПРИ СОЛОНОВАТОВОДНОМ РЕЖИМЕ В УСЛОВИЯХ ЗАМКНУТОГО ВОДООБЕСПЕЧЕНИЯ

Fry of Russian sturgeon ( Acipenser gueldenstadtii Brandt et Ratzeburg, 1833) was an object of research in the course of studying the influence of different concentration of water salinity onto the operation of a closed water supply unit and on the intensity of fish growth. Salt medium (3; 5; and 7‰) was made using sodium chloride solution, whose osmotic force corresponded to water salinity in the Northern Caspian - from 0 to 7‰. Temperature and oxygen condition changed within 20.0-22.0°C and 85.0-100.0% of saturation. Maximum fish growth was registered in salinity of 5 and 7‰, increase made 8.0-21.0%. The intensive growth rate proved that sturgeon breeding in brackish waters facilitated more efficient digestion of food components in the fish gastrointestinal tract. Blood indices corresponded to parameters specific for fishes in the natural habitat: haemoglobin - 30.0-45.0 g/l; cholesterol and crude protein - up to 3.5 mmol and 26.0 g/l. Level of lipids was high - 4.8-6.5 g/l, which is characteristic to fish fed with complete dry feed. Osmolality of fish blood serum was within 219.0 ± 2.41 - 239.0 ± 0.94 mmol/kg of H2O and corresponded to the parameters of sturgeons of different age groups in desalinated area in the Northern Caspian. However, increase of water temperature and salinity up to 7‰ affected operation of biological filter and raised the concentration of ammonium nitrogen in water, which lowered viability to 10.0%. Parameters of hydrochemical condition of a closed ecosystem were within normal values under salinity of aqueous medium up to 5‰, which should be taken as optimal for creating brackish regime in the closed water supply units of sturgeon breeding.

Influence of Different Concentration and Ratio of a Photoinitiator System on the Properties of Experimental Resin Composites.

The aim in this study was to evaluate the influence of different ratio of camphorquinone/tertiary amine concentration on the flexural strength (FS), elastic modulus (EM), degree of conversion (DC), yellowing (YL), water sorption (WS) and water solubility (WSL) of experimental composites. Thus, acrylate blends were prepared with different camphorquinone (CQ) and amine (DABE) concentrations and ratios by weight: (CQ/DABE%): 0.4/0.4% (C1), 0.4/0.8% (C2), 0.6/0.6% (C3), 0.6/1.2% (C4), 0.8/0.8% (C5), 0.8/1.6% (C6), 1.0/1.0% (C7), 1.0/2.0% (C8), 1.5/1.5% (C9), 1.5/3.0% (C10). For the FS and EM, rectangular specimens (7x2x1 mm, n=10) were photo-activated by single-peak LED for 20 s and tested at Instron (0.5 mm/min). Then, the same specimens were evaluated by FTIR for DC measurement. For YL, disks (5x2 mm, n=10) were prepared, light-cured for 20 s and evaluated in spectrophotometer using the b aspect of the CIEL*a*b* system. For WS and WSL, the volume of the samples was calculated (mm³). For WS and WSL, composites disks (5x0.5 mm, n=5) were prepared. After desiccation, the specimens were stored in distilled water for 7 days and again desiccated, in order to measure the WS and WSL. Data were submitted to one-way ANOVA and Tukey's test (5%). The groups C8, C9 and C10 showed higher DC, EM and YL means, compared to other composites. Therefore, the FS and WS values were similar among all groups. Also, C1, C2 and C3 presented higher WSL in 7 days, compared to other composites. In general, higher concentrations of camphorquinone promoted higher physical-mechanical properties; however, inducing higher yellowing effect for the experimental composites.

Influence of Different Concentration of Tris Buffer Solution on Calcium Carbonate Precipitation in Bio-based Repair Materials

This research examined differences in the concentration of Tris buffer solution on calcium carbonate precipitation in bio-based repair materials. Four concentrations of Tris buffer solution were chosen based on previous research with initial pH 8.0 and 9.0. Initial experiments demonstrated that the concentration and pH of Tris buffer solution had an influence on the amount of precipitation of calcium carbonate. X-Ray Diffraction (XRD) analysis elucidated the morphological and structural differences of the calcium carbonate crystal, including calcite and vaterite. They are the prominent forms of CaCO3 detected based on results obtained by according to FT-IR analysis. The result further explains the effectiveness of Tris buffer concentration.

Sol–Gel Electrolytes Incorporated by Lanthanide Luminescent Materials and Their Photophysical Properties

A group of silica gel electrolytes with lanthanide luminescent hybrid materials were assembled and investigated. Photophysical studies showed that terbium and europium hybrids displayed characteristic green and red emissions within the electrolytes. The influence of different concentration of the lanthanide hybrids on the electrochemical behavior of a gelled electrolyte valve-regulated lead-acid battery were studied through cyclic voltammograms, electrochemical impedance spectroscopy, water holding experiments and mobility tests. The morphology and particle size were analyzed by scanning electron microscopy. The results proved that lanthanide (Tb3+/Eu3+) luminescent materials are effective additives which will significantly improve the electrochemical properties of lead-acid batteries.