Antipyretic activity of Calotropis gigantea, Vernonia cinerea,and Cissampelos pareiraextractsonlipopolysaccharide-induced pyrexia in rabbits

This study aims to evaluate the antipyretic activity of Calotropis gigantea (CG), Vernonia cinerea (VC), and Cissampelos pareira (CP)extracts. Rabbits were received an intravenous lipopolysaccharide (LPS) after being orally administered with the plant extracts or paracetamol, a reference drug. The treatment of CG and VC ethanolic extract (125 and 250 mg/kg) and paracetamol (150 mg/kg) significantly reduced LPS-induced pyrexia. Moreover, ethyl acetate fraction (50 mg/kg) of CG showed a more significant effect in lowering the hyperthermia than dichloromethane, n-butanol fraction, or water residue. In conclusion, this study demonstrated that CG and VC ethanolic extract possess antipyretic activity. Besides, the components in the ethyl acetate fraction of CG play an important role in the antipyretic property of this herb

Thermally Induced Silane Dehydrocoupling: Hydrophobic and Oleophilic Filter Paper Preparation for Water Separation and Removal from Organic Solvents

Organic solvents with high purity are essential in various fields such as optical, electronic, pharmaceutical, and chemical areas to prevent low-quality products or undesired side-products. Constructing methods to remove impurities such as water residue in organic solvents has been a significant challenge. Within this article, we report for the first time a new method for the preparation of hydrophobic and oleophilic filter paper (named OCFP), based on thermally induced silane dehydrocoupling between cellulose-based filter paper and octadecylsilane. We comprehensively characterized OCFP using various characterization techniques (FTIR, XPS, XRD, and EDS). OCFP showed super-hydrophobic and oleophilic properties as well as remarkable water separation and removal efficiency (>93%) in various organic solvents with sustained reusability. In addition, the analytical results both before and after filtration of an NMR solvent using OCFP indicated that OCFP has an excellent solvent drying efficiency. This work presents a new strategy for the development of super-hydrophobic cellulose-based filter paper, which has great potential for solvent drying and water separation.

Characterization of GO:I-131 for Radioactive Clinical Waste Water Management in Nuclear Medicine

Iodine-131 (I-131) mostly used in nuclear medicine for radioiodine ablation (RAI) therapy and hyperthyroid treatment. Patient was orally ingested I-131 and warded within 3 to 4 days for RAI therapy, whereas outpatient for hyperthyroid treatment. Radioactive waste from patient’s body such as urine and feces were eliminated from the ward into delay tank. Delay tank is an underground system to reduce radioactivity of contaminated I-131 clinical waste water at certain level before will be discharged into ordinary sewage system. Delay tank indirectly restricted the number of patient admission due to its periodical clearance and small volume size. Thus, a new technique to extract I-131 radionuclide with contaminated mixtures in solid form from the delay tank has been proposed as an alternative for clinical waste water management in nuclear medicine. Radioactive clinical waste water samples from delay tank were mixed with Graphene Oxide (GO) with varies in concentrations before filtered using micro pore filter paper. After 15 – 30 minutes, the radioactivity of the water residue left beneath the filter paper were counted using well counter. The measurements were repeated on fourth, eighth, twelfth and sixteenth days, which is significant to the natural decay of I-131 radionuclide. The water residue radioactivity decreases over the concentration of GO throughout the experiment. The mixtures of GO:I-131 (sediment formed on the filter paper) were analyzed using Field Emission Scanning Electron Microscopy (FESEM) and Energy Dispersive X-rays (EDX) for morphology and elemental analysis. FESEM image revealed the maximum GO concentration produced high agglomeration morphology. EDX shows I-131 and other elements were attracted to GO layered sheets. The results showed that the GO had high sorption capacities in the removal of radionuclides, which was attributed to the large number of oxygen-containing functional groups on the surface or edge sites.

Brazing in SiH4-Doped Inert Gases: A New Approach to an Environment Friendly Production Process

Engineering under protective atmospheres or in vacuum allows the production of materials and components, where the absence of oxygen is an essential requirement for a successful processing. Ideally, joining or coating of (and with) metallic materials needs oxide free material surfaces, in order to achieve durable joints or coatings. Using the established technology of brazing in controlled atmosphere, fundamental physical mechanisms for deoxidation of metal surfaces are presented and the role of oxygen and water residue in the process atmosphere is analyzed. Furthermore, the doping of gases with monosilane for generating virtually oxygen-free process atmospheres is introduced and its advantages for an oxygen-free production are discussed.

Lesion Boundary Segmentation With Artifacts Removal and Melanoma Detection in Skin Lesion Images

Melanoma is a severe form of skin cancer characterized by the rapid multiplication of pigment-producing cells. A problem on analysis of these images is interesting because of the existence of artifacts that produces noise such as hair, veins, water residue, illuminations, and light reflections. An important step in the diagnosis of melanoma is the removal and reduction of these artifacts that can inhibit the examination to accurately segment the skin lesion from the surrounding skin area. A simple method for artifacts removal for extracting skin lesion is implemented based on image enhancement and morphological operators. This is used for training together with some augmentation techniques on images for melanoma detection. The experimental results show that artifact removal and lesion segmentation in skin lesion images performed a true detection rate of 95.37% for melanoma skin lesion segmentation, and as high as 92.5% accuracy for melanoma detection using both GoogLeNet and Resnet50.

PREDIKSI VOLUME AKUIFER BEBAS DI KECAMATAN BUKIT RAYA DENGAN METODE BEDA HINGGA

A research about prediction of unconfined aquifer in Distrcit Bukit Raya have been done by using finite difference method. The depth of unconfined aquifer data using contour grid District Bukit Raya in 2015 solved numerically by using computer program MATLAB application R2009a version. The aim of this research was to analyze the effect of population growth on the volume of unconfined aquifer in District Bukit Raya. The result of the research could be informed to District Bukit Raya as follows : the total volume of underground water in 2017 in the amount of 10.399.615,33 m3 and in 2021 in the amount of 10.931.060,63 m3. the volume of underground water that taken by residents in 2017 were in the amount of 5.038.007,328m3and in 2021 were in the amount of 5.334.525,03 m3. The inreasing of lowering the volume of underground water (residue), so that in 2017 The inreasing of loweringthe volume of underground wateras much as5.361.608 m3and in 2021 as much as 5.596.535,6 m3. It can be concluded that the volume of underground waterinfluenced by the changes of the dept of aquifer and the large of green open space

Dynamical insights into the mechanism of a droplet detachment from a fiber

For all drop sizes, water residue on the fiber is maximized by using intermediate rates of forcible drop detachment.