Laboratory Condition

Top PDF Laboratory Condition:

A Feasible Way of Degrading Malathion Pesticide under Laboratory Condition Using Phosphate Solubilizing Bacteria

A Feasible Way of Degrading Malathion Pesticide under Laboratory Condition Using Phosphate Solubilizing Bacteria

Malathion [diethyl 2-{(dimethoxyphosphorothioyl) sulfanyl} butanedioate] is one of the common pesticides used in pest control programs in Bangladesh. In this study malathion was degraded by using Phosphate solubilizing bacteria un- der laboratory condition. As it is reported that phosphate solubilizing bacteria are capable of mineralizing organic phosphorous compound, so it is expected that these bacteria will be able to degrade organophosphate malathion releasing soluble phosphorous.

12 Read more

Biodiesel Production from waste Oil with Micro-Scale Biodiesel System Under Laboratory Condition

Biodiesel Production from waste Oil with Micro-Scale Biodiesel System Under Laboratory Condition

ABSTRACT:- The aim of this project is to produce biodiesel from waste oil. The use of vegetable oils as diesel fuel started with the invention of diesel engines in the 1900s and is also common in many countries today. The fact that the oils used in biodiesel production are also an important input of the food industry is a limiting factor in production. For this reason, it is aimed to produce biodiesel from waste oil which can not be assessed in food production in this study. The most important contribution of the study to biodiesel researches is the establishment of a small-capacity biodiesel unit in laboratory conditions. The waste oils from the food production facilities of Namık Kemal University (NKU) have been collected and biodiesel has been produced using two different experimental methods. The analyses that determine the quality of the biodiesel samples have been carried out by Energy Agriculture Research Center of Black Sea Agricultural Research Institute in Republic of Turkey Ministry of Food, Agriculture and Livestock. As a result of the research, it has been determined that the biodiesel fuel obtained by the B-1 method using KOH as a catalyst conforms to the standards and can be used with confidence in diesel engines.

8 Read more

The Efficacy of Ocimum gratissimum Leaf Powder and Ethanol Extract on Adult Periplanata americana under Laboratory Condition

The Efficacy of Ocimum gratissimum Leaf Powder and Ethanol Extract on Adult Periplanata americana under Laboratory Condition

DOI: 10.4236/oalib.1104455 8 Open Access Library Journal including Azadirachta indica (neem) tree whose insecticidal properties have proven successful in the control of over 550 insect species such as the orders Dictyoptera (cockroaches and mantis), Coleopera, Isoptera, Homoptera, Hete- roptera, Diptera Orthoptera and others [9]. Developing countries and Nigeria in particular face the most challenges in achieving the sound management of pesti- cides. A large proportion of the population in Nigeria is directly engaged in agricultural work, often on a very small scale. While evidences abound that bo- tanical pesticides are generally safe and effective [10], their use in Nigeria as in other parts of Africa is still hampered by some challenges such as most data on botanical pesticides been obtained from laboratory trials; field data are rare.

17 Read more

Assessing the Ovarian Accessory Glands to Determine the Parity of Phlebotomus papatasi, Vector of Zoonotic Cutaneous Leishmaniasis, under Laboratory Condition

Assessing the Ovarian Accessory Glands to Determine the Parity of Phlebotomus papatasi, Vector of Zoonotic Cutaneous Leishmaniasis, under Laboratory Condition

Background: Zoonotic cutaneous leishmaniasis (ZCL) is a neglected tropical disease prevailed in many rural areas of 17 out of 31 provinces in Iran. The main vector of the disease is Phlebotomus papatasi and the causative agent is Leishmania major in ZCL foci of Iran. In the current study we investigated the validity of accessory glands secre- tions as an indicator to recognize parous from nulliparous Ph. papatasi females under laboratory conditions.

5 Read more

Load characteristic of tractor three point hitch for their simulation in laboratory condition

Load characteristic of tractor three point hitch for their simulation in laboratory condition

The results of experimental measurement make possible to realize projected method of simulation of operating loads of dynamic system of tractor three-point hitch in laboratory conditions. Projected method of simulator control gives extensively oppor- tunities for complex technical-economical evalua- tions of operative comparison of mobile agricultural sets, for evaluate their theoretical output and for optimization of measured consumption of fuel on unit of treated area, or of matter produced. It for the facilitates tests of TPH lifetime at loading TPH by common run of forces in horizontal and vertical ori- entations, so as to answer conditions of the practical loading process. From point of view of methodical considering we can suppose, that at comparison of different types of control systems the presented type of simulation will be at each repeating of load cycles the same, without influence of random factors exist- ing in operating conditions.

7 Read more

Stabilization of Mine Waste Using Paper Sludge Ash under Laboratory Condition

Stabilization of Mine Waste Using Paper Sludge Ash under Laboratory Condition

The leaching of potentially toxic elements or the generation of acidity from mine waste often creates significant environmental pollution. A great deal of research has been undertaken to find an effective solution to the problem of acid mine drainage. An attractive solution has been proposed, not only efficient but also economical, as it uses another waste material. The objective of this study was to investigate the feasibility of stabilizing acidic mine waste using alkaline industrial waste, paper sludge ash, produced by the pulp and paper industry, under laboratory conditions. By mixing mine waste with paper sludge ash (the weight ratio of mine waste to paper sludge ash is 10: 4), the eluted solution became neutral, and the concentrations of almost all metals dropped below the Japanese effluent standard. The inhibition of acid mine drainage with addition of PSA is sustainable. Although Radish sprouts did not grow on mine waste, they could be grown on the waste mixed with paper sludge ash. These results suggest that it is possible to use paper sludge ash for afforestation of a mine waste site. [doi:10.2320/matertrans.MK200705]

9 Read more

Ash of Parthenium Hysterophorus L. is Harmful for Seed Germination and Growth of Seedlings of Cajanus cajan L.

Ash of Parthenium Hysterophorus L. is Harmful for Seed Germination and Growth of Seedlings of Cajanus cajan L.

Water soluble phenolics and sesquiterpene lactones, parthenin, caffic acid, P-coumaric acid, ferulic acid, vanicillic acid, anisic acid, fumaric acid etc have been reported from roots, stem, eaves, inflorescence, pollens, seeds and even from air–dried root and leaf materials. Thus, it is evident that with increase in the concentration of ash in laboratory condition the rate of seed germination and other growth parameters studied decreased compared to the control condition.

5 Read more

Performance evaluation of integrated treatment plant of trickling filter and constructed wetland

Performance evaluation of integrated treatment plant of trickling filter and constructed wetland

A system consisting of trickling filter followed by a vertical intermittent flow constructed wetland system under laboratory condition was evaluated for the treatment of domestic wastewater. The system was able to produce final effluents with low concentrations of both organic and nutrients. Mean effluent concentrations were, respectively: BOD: 22.22mg/L;COD:64.58mg/L;SS:27.63mg/L;NH 4 -N:0.62mg/L;P:1.72mg/L. The study shows

13 Read more

Examining the influence of seasonality, condition, and species composition on mangrove leaf pigment contents and laboratory based spectroscopy data

Examining the influence of seasonality, condition, and species composition on mangrove leaf pigment contents and laboratory based spectroscopy data

Based on the correlograms from Figures 5 and 6 the specific reflectance at the 550–570 nm and 705–715 nm could be suitable for remote sensing estimations of chl-a leaf contents in some species of mangroves (e.g., red and black). As a result, reflectance-based algorithms such as Vog1 and REIP for quantifying mangrove leaf chl-a and chl-b contents in semi-arid regions should use the wavebands between 550–570 nm (green channel) and 705–715 nm (red-edge) as optimal zones. Conversely, wavelengths at the 650–680 nm (red channel), and 732–1000 nm (near-infrared) ranges should be used as insensitive areas. Contrary to [26], we did not find high correlation values within the near-infrared regions (800–1000 nm). However, they tested different species of mangroves (i.e., Avicennia alba, Avicennia marina, and Rhizophora mucronata). Consequently, these results indicate that each mangrove species and condition should be considered when dealing with spectroscopy assessments of leaf pigment contents. Additionally, it is also apparent that seasonality can play a key role in the success of such endeavors as shown for these semi-arid mangroves.

20 Read more

69. Biological control of mustard aphid, Lipaphis erysimi (Kaltenbach, 1843) through seven-spotted ladybird beetle, Coccinella septempunctata (Linnaeus, 1758) under laboratory conditions

69. Biological control of mustard aphid, Lipaphis erysimi (Kaltenbach, 1843) through seven-spotted ladybird beetle, Coccinella septempunctata (Linnaeus, 1758) under laboratory conditions

Department of Zoology, Shah Abdul Latif University, Khairpur, were kept in jars containing aphids to maintain the mass culture under laboratory conditions. For egg laying purpose in the inner surface of each jar, a blotting paper was spread out. For the hatching ability; females laid in eggs were counted and shifted to separate Petri dishes by using the soft camel hair brush. Finally, the observation of fertility and fecundity were done. The fresh leaves of mustard were provided daily as the food of pest. On daily basis aphid consumption was documented by counting unconsumed aphids, which were kept in Petri dishes separately and continued till the next developmental stage of larva as well as the counting of dead aphids in each Petri dish was also recorded as eaten by a natural enemy, while the wounded / sluggish larvae were replaced and maintained. The replication of the experiment was done 5 times in each case under vitro conditions. The hygrometer was used for measuring temperature and relative humidity under laboratory conditions. While at the bottom of the each Petri dish in which experiment was carried out a moistened Watsman ® filter paper was kept to keep away from drought and for managing adequate humidity. After hatching of eggs in their initial stages 50 number of counted aphids were provided as food source to extend its lifespan up to the adult stage and pest density of aphids either nymphs or adults, consumed by different stages of predators such as 1 st , 2 nd , 3 rd , 4 th, and adults, were observed under laboratory conditions. Consequently feeding efficacy was observed accordingly.

11 Read more

The effect of sound level on perception of reproduced soundscapes

The effect of sound level on perception of reproduced soundscapes

experiment conducted outdoors at Manchester City Centre. The four dimensions of space that proposed by Kang (2007) exist in the laboratory experiment, but with the dimension of Communication and Dynamic unite into one dimension. The components related to Calmness/Relaxation, Naturality and Meaningful, and Directivity show the same outcome with the in situ experiment. Those components were formed from the identical semantic scales, and also showed the matching amount of variance explanation of the PCA.

22 Read more

Sorption-Desorption Study of a Herbicide 2,4-Dichlorophenoxyacetic Acid on Acidic Tropical Soils

Sorption-Desorption Study of a Herbicide 2,4-Dichlorophenoxyacetic Acid on Acidic Tropical Soils

The sorption and desorption of 2,4-dichlorophenoxyacetic acid (2,4-D) was evaluated on different soils with different range of organic matter content. The batch equilibrium technique under laboratory condition was used to determine the sorption/desorption behavior of 2,4-D in 4 different soil orders of Malaysia viz Histosols (peat), Inceptisols (Selangor and Briah) and Ultisols (Rengam and Serdang) and Oxisol (Munchong). Sorption data were fitted to the linear and Freundlich equations. The values of K d and K F ranged from 1.35 to 35.26 and 2.70 to 42.04, respectively. Highest sorption was observed in peat soil and the lowest was in Rengam soil. According to the sorption and desorption results, organic matter and clay seemed to be the most important factor influencing the sorption capacity of 2,4-D. Thus, the contributions of organic matter were evaluated by comparing changes in 2,4-D of sorption before and after organic matter removal. After organic matter was removed from the soils, the Kd values for sorption by Selangor and Munchong, which were calculated from linear and Freundlich equations, decreased by 26.7 % and 28.0 %, respectively. This revealed that soil organic matter greatly influenced the 2,4-D sorption. Based on their sorption capacity, the soils can be ranked in the following decreasing order: Peat> Selangor> Munchong> Briah> Serdang> Rengam Soil Series.

13 Read more

Web based controlling system for computer technology laboratory

Web based controlling system for computer technology laboratory

Abstract: Recently there are many existing applications in our daily life through the use of the internet. These applications had contributed to human in many aspects of life especially to those who rely mostly onto internet in completing their daily tasks. Knowing this, an application using web-based to control the electrical appliances such as lamps and fans in the FKEE Computer Technology Laboratory were proposed. By providing a function to switch on/off lamps and fans using the web without the exact existence of the user in the laboratory as it also has been designed to be more user-friendly help management to save the power consumption usage in laboratory. Apart from that, this project also has the capability to monitor the condition of the laboratory by using IP Based Camera that is connected to the internet and functions as the CCTV for the web users. Moreover, as the safety precaution, this application has been designed to have a restriction to only authorized user whom can login, in order for the user to have full control over the system. This can avoid from any unwanted circumstances and also increase the maximum level of handling the system properly for the user and university.

8 Read more

Skin Lesions in a Boy With X-linked Lymphoproliferative Disorder: Comparison of 5 SH2D1A Deletion Cases

Skin Lesions in a Boy With X-linked Lymphoproliferative Disorder: Comparison of 5 SH2D1A Deletion Cases

No autoantibodies expected of a bullous condition could be detected, possibly because we could only thoroughly ex- amine the patient years after the dis- ease fl are when the skin changes were residual. The bioptic material from the enhanced disease-activity phase was not available for reanalysis. The hy- pothetical temporary presence of autoantibodies could be explained by the disruption of B-lymphocyte ho- meostasis. Hypergammaglobulinemia gradually progressing to hypo- gammaglobulinemia is a known fea- ture of XLP-1, and autoreactive B-cell clones may disappear in parallel with normal B cells.

8 Read more

Engine Performance and Emission Characteristics of a Single Cylinder Four Stroke CI Engine on Dual Fuel Mode by Using Compressed Biogas as a Fuel

Engine Performance and Emission Characteristics of a Single Cylinder Four Stroke CI Engine on Dual Fuel Mode by Using Compressed Biogas as a Fuel

Abstract: Conventional fuels like diesel and petrol are depleting day by day, so we have to search for an alternative fuel. The aim of study is to analyze the performance and emission characteristics existing single cylinder four stroke compression ignition (CI) engine converted into dual fuel mode. In the present studies the effect of Biogas on the performance diesel engine on dual fuel mode. Biogas used as primary fuel and Diesel used as secondary (pilot) fuel on dual fuel mode, Dual fuel mode is one of the better methods to control emissions from CI engines and instantaneously replacing existing diesel fuel engine. Experiments is carried out under engine laboratory condition, analyze the performance and emission characteristics of single cylinder CI engine on dual fuel mode by using Biogas used as fuel by varying the Biogas percentage. The reduction in CO and HC emissions on dual fuel mode for different loads were observed.

9 Read more

Stability Analysis of Cut Slopes Using Continuous Slope Mass Rating and Kinematic Analysis in Rudraprayag District, Uttarakhand

Stability Analysis of Cut Slopes Using Continuous Slope Mass Rating and Kinematic Analysis in Rudraprayag District, Uttarakhand

are being used now days like limit equilibrium, analytical and kinematic, physical and numerical models [5-7]. One of the most widely used and adequate method is slope mass rating (SMR) technique [8,9]. SMR is based on the rock mass rating (RMR) technique given by Bieniawski [10,11]. RMR technique is based on detailed field and laboratory study which involves collection of data at site slopes, strength of rock exposed on slope face, condition of discontinuities, spacing of discontinuities, orientation of discontinuities, and ground water condition. SMR includes RMR along with some adjustment factors based on relation of joint orientation with slope and method of slope excavations. The adjustment factors in SMR tech- nique, proposed by Romana, are discrete and are more decision based. The continuous SMR (CSMR) proposed by Tomas provides continuous determination and very less decision based [12-14]. The CSMR assigns unique value to each adjustment factor of slope that result into more accurate value of SMR [14].

9 Read more

Study on the fracture mode of low permeability shale under different confining pressures

Study on the fracture mode of low permeability shale under different confining pressures

Since Cook (1965) found that the stress-strain curve of the whole rock, people began a lot of experimental research on the fracture process of rock. A number of studies have indicated that the failure of the rock occurs at a point after the peak load, not at the point of peak strength. The rupture is no longer seen as a state, but rather a process, a process known as the deterioration of the material [2]. So far, a lot of research about the rock fracture is still in use of the traditional strength theory. In mining engineering, such as mining, slope, drilling and blasting, especially in deep mining of coal mine production, and often encounter "rock burst" and "coal explosion" phenomenon of rock burst. This phenomenon not only seriously damage the underground engineering structure, but also threaten the safety of the production personnel. But just here, the traditional failure criterion is invalid. On the other hand, it is more important to predict and prevent the instability of a lot of underground structures than simply studying the strength limit. Therefore, many of the same issues related to mining damage in geotechnical engineering, people are concerned about not only the peak strength, bearing capacity and rupture after rupture of precursory information is also an important problem of rock mechanics are concerned. Study of rock failure is only a state of rupture process, not simply seek to put forward such as Mohr- -Coulomb kind of rock under the condition of laboratory overall failure strength criterion according to, because it is not applicable to the load deformation and fracture process research. The study of the rupture process often appears to be more important than the destruction of the study itself [2]. In this paper, the fracture modes of rock under different confining pressures are studied by experiments.

11 Read more

Chlorpyrofos Induced Alterations in Glycogen Content in Some Organs of Fresh Water Fish, Channa gachua (F. Hamilton)

Chlorpyrofos Induced Alterations in Glycogen Content in Some Organs of Fresh Water Fish, Channa gachua (F. Hamilton)

ABSTRACT: Highly effective pesticides are used tremendously which enters into aquatic system and brings multiple changes in the organism by altering the growth rate, nutritional value, behavioral pattern and biochemical composition. From aquatic ecosystem fish is used as food by the major part of the world. So, it is essential to secure the health of fish. The main objective of the present investigation is to evaluate the impact of organophosphorus insecticide, chlorpyrifos on glycogen content in Channa gachua, an economically important fresh water fish. The lethal concentration was found to be 0.05 ml/L for 96 hrs. Under the laboratory condition the fishes were exposed to sub lethal concentration (i.e. 1/4 th conc. of LC 50) for 24, 48, 72 and 96 hrs and investigated significant changes in glycogen content in some organs. The glycogen content in muscle, gill, intestine, stomach and brain was found to be declined after pesticide exposure. The rapidly decreased total glycogen content might be due to the influence of pesticide that disturbs the metabolism due to the toxicity stress. It is concluded that chlorpyrifos either in low or high concentration is very toxic to non taeget organism.

6 Read more

Performance assessment of an improved cook stove (Esperanza) in a typical domestic setting: implications for energy saving

Performance assessment of an improved cook stove (Esperanza) in a typical domestic setting: implications for energy saving

these improved stoves had initially been assessed in the la- boratory, through controlled cooking tests (CCTs) [9], and were found to be higher than that of the 3-stone stove. La- boratory testing provides a cost-effective means of evaluat- ing cookstoves while controlling variables that are difficult or impossible to control in the field. Despite such advan- tages, controlled laboratory testing cannot fully duplicate field testing but should emulate field conditions to the greatest extent possible. Although, this had been the case, very few studies have evaluated these improved stoves under normal household conditions [10]. Thus, it is im- portant to investigate the performance of improved stoves under household conditions as efficiencies could differ from the CCT results as it was observed with plancha stove in Guatemala. For example, in standard water boiling and cooking tests, the plancha consumed more fuel and took longer than the open fire, but in 5-day tests of routine cooking, the plancha was found to use 39% less wood fuel than that of the open fire [11]. Therefore, the objective of this study was to assess the performance of the Esperanza stove in a typical domestic setting.

9 Read more

Structural analysis of vertical storage tanks using new approaches to determine their safe operational life

Structural analysis of vertical storage tanks using new approaches to determine their safe operational life

In addition, the laboratory is supplied with qualified corrosion-protection coating (CPC) and thermal-insulation coating (TIC) inspectors and specialists who, as members of the inspection crews, carry out comprehensive assessments of the condition of tanks’ corrosion-protection coatings, entering details of any detected defects into a single coordinate system. In the period from 2013 to 2015, the technical condition of the corrosion- protection coating in 122 tanks was evaluated, and this revealed discrepancies between their qualitative indicators and the regulatory requirements. Repairs of the defects found in the corrosion-

8 Read more

Show all 10000 documents...

Related subjects