Tropical stormwater nutrient degradation using nano-TiO2 in photocatalytic reactor detention pond

2015 ◽  
Vol 73 (2) ◽  
pp. 405-413 ◽  
Author(s):  
Saeed Rad ◽  
Supiah Shamsudin ◽  
Mohd Raihan Taha ◽  
Shamsuddin Shahid
Keyword(s):  
Nitrate Removal ◽  
Control Sample ◽  
Ultra Violet ◽  
The Body ◽  
Nano Particles ◽  
Scale Model ◽  
Stormwater Treatment ◽  
Nano Tio2 ◽  
Photocatalytic Reactor ◽  
Detention Pond

The photo-degradation of nutrients in stormwater in photocatalytic reactor wet detention pond using nano titanium dioxide (TiO2) in concrete was investigated in a scale model as a new stormwater treatment method. Degradation of phosphate and nitrate in the presence of nano-TiO2 under natural ultra violet (UV) from tropical sunlight was monitored for 3 weeks compared with normal ponds. Two types of cement, including ordinary Portland and white cement mixed with TiO2 nano powder, were used as a thin cover to surround the body of the pond. Experiments with and without the catalyst were carried out for comparison and control. Average Anatase diameter of 25 nm and Rutile 100 nm nano particles were applied at three different mixtures of 3, 10 and 30% weight. The amounts of algae available orthophosphate and nitrate, which cause eutrophication in the ponds, were measured during the tests. Results revealed that the utilization of 3% up to 30% weight nano-TiO2 can improve stormwater outflow quality by up to 25% after 48 h and 57% after 3 weeks compared with the control sample in normal conditions with average nutrient (phosphate and nitrate) removal of 4% after 48 h and 10% after 3 weeks.

scholarly journals Tropical Stormwater Chemical Oxygen Demand Degradation Using Nano TiO2 in Photocatalytic Reactor Detention Pond

2015 ◽  
Vol 27 (6) ◽  
pp. 2311-2316 ◽  
Author(s):  
Saeed Rad ◽  
Supiah Shamsudin ◽  
Mohd. Raihan Taha ◽  
Shamsuddin Shahid
Keyword(s):  
Chemical Oxygen Demand ◽  
Oxygen Demand ◽  
Nano Tio2 ◽  
Photocatalytic Reactor ◽  
Detention Pond

In-vivo evaluation of cisplatin nanoparticles encompass natural polymer

2020 ◽  
Vol 6 (1) ◽  
pp. 1-7
Author(s):  
Bhavani J ◽  
Sunil Kumar Prajapati ◽  
Ravichandran S
Keyword(s):  
Tumor Volume ◽  
Nitrogen Mustard ◽  
Common Type ◽  
The Body ◽  
Nano Particles ◽  
Natural Polymer ◽  
Drinking Alcohol ◽  
In Vivo Evaluation

Cancer is assemblage diseases involving abnormal cell growth amid the potential of spread to other parts of the body due to tobacco use are the cause of about of cancer deaths. Another 10% is due to obesity, poor diet & drinking alcohol. In 2012 about 14.1 million new cases of cancer occurred globally. In females, the most common type is breast cancer. Cisplatin also known as cytophosphane is a nitrogen mustard alkylating agent from the oxazophosphinans groups were used to treat cancers & autoimmune disorders. Based on the above reasons I will fix the aim Preparation characterization of Cisplatin- nano particles  &  its anticancer activity. Solid tumor volume examination report showed that the assessment of different day indication 15,20,25 & 30th variations of different groups of tumor volumes were decreased CPG Nanoparticles (100 mg/kg)+ DAL(15th day 4.97±0.24↓), (20th day 0.6±0.13↓), (25th day 1.35±0.30↓) & (30th day 1.89±0.13↓).

Harnessing clay nano-particles for stem-cell driven tissue regeneration, EPSRC

Impact ◽  
2018 ◽  
Vol 2018 (3) ◽  
pp. 26-28
Author(s):  
Jonathan Dawson ◽  
Richard Oreffo
Keyword(s):  
Stem Cells ◽  
Stem Cell ◽  
Blood Vessels ◽  
The Body ◽  
Biological Molecules ◽  
Nano Particles ◽  
Clay Particles ◽  
Clay Nanoparticles ◽  
Signalling Molecules ◽  
The Right

Gels made from clay could provide an environment able to stimulate stem-cells due to their ability to bind biological molecules. That molecules stick to clay has been known by scientists since the 1960s. Doctors observed that absorption into the blood stream of certain drugs was severely reduced when patients were also receiving clay-based antacid or anti-diarrhoeal treatments. This curious phenomenon was realized to be due to binding of the drugs by clay particles. This interaction is now routinely harnessed in the design of tablets to carefully control the release and action of a drug. Dr Dawson now proposes to use this property of clay to create micro-environments that could stimulate stem cells to regenerate damaged tissues such as bone, cartilage or skin. The rich electrostatic properties of nano (1 millionth of a millimetre) -scale clay particles which mediate these interactions could allow two hurdles facing the development of stem-cell based regenerative therapies to be overcome simultaneously. The first challenge - to deliver and hold stem cells at the right location in the body - is met by the ability of clays to self-organise into gels via the electrostatic interactions of the particles with each other. Cells mixed with a low concentration (less than 4%) of clay particles can be injected into the body and held in the right place by the gel, eliminating, in many situations, the need for surgery. Clay particles can also interact with large structural molecules (polymers) which are frequently used in the development of materials (or 'scaffolds'), designed to host stem cells. These interactions can greatly improve the strength of such structures and could be applied to preserve their stability at the site of injury until regeneration is complete. While several gels and scaffold materials have been designed to deliver and hold stem cells at the site of regeneration, the ability of clay nanoparticles to overcome a second critical hurdle facing stem-cell therapy is what makes them especially exciting. Essential to directing the activity of stem-cells is the carefully controlled provision of key biological signalling molecules. However, the open structures of conventional scaffolds or gels, while essential for the diffusion of nutrients to the cells, means their ability to hold the signalling molecules in the same location as the cells is limited. The ability of clay nano-particles to bind biological molecules presents a unique opportunity to create local environments at a site of injury or disease that can stimulate and control stem-cell driven repair. Dr Dawson's early studies investigated the ability of clay gels to stimulate the growth of new blood vessels by incorporating a key molecular signal that stimulates this process, vascular endothelial growth factor (VEGF). In a manner reminiscent of the observations made in the 60s, Dr Dawson and colleagues observed that adding a drop of clay gel to a solution containing VEGF caused, after a few hours, the disappearance of VEGF from the solution as it became bound to the gel. When placed in an experimental injury model, the gel-bound VEGF stimulated a cluster of new blood vessels to form. These exciting results indicate the potential of clay nanoparticles to create tailor-made micro-environments to foster stem cell regeneration. Dr Dawson is developing this approach as a means of first exploring the biological signals necessary to successfully control stem cell behaviour for regeneration and then, using the same approach, to provide stem cells with these signals to stimulate regeneration in the body. The project will seek to test this approach to regenerate bone lost to cancer or hip replacement failure. If successful the same technology may be applied to harness stem cells for the treatment of a whole host of different scenarios, from burn victims to those suffering with diabetes or Parkinson's.

IMPROVEMENT OF TECHNOLOGIES AND DEVELOPMENT COMPOUNDINGS OF THE BAKERY PRODUCTS OF THE FUNCTIONAL PURPOSE ENRICHED WITH CALCIUM, PROTEIN AND β-CAROTENE

2018 ◽  
Author(s):  
И.В. МАЦЕЙЧИК ◽  
С.М. КОРПАЧЕВА ◽  
Е.А. СУВОРОВА ◽  
А.Н. ТКАЧ
Keyword(s):  
Information Matrix ◽  
Control Sample ◽  
Fine Powder ◽  
The Body ◽  
Bakery Products ◽  
Mechanochemical Processing ◽  
Egg Shell ◽  
Functional Purpose ◽  
Β Carotene ◽  
Min Cut

Разработаны рецептуры хлебобулочных изделий на основе сухой подсырной деминерализованной сыворотки «Вимм-билль-данн» с добавлением тонкодисперсного порошка из яичной скорлупы механохимической обработки и растительных порошков из свеклы, клюквы и моркови после инфракрасной обработки. С помощью математического моделирования путем решения задач линейного программирования подобраны оптимальные соотношения ингредиентов рецептур, представленные в виде информационной матрицы для проектирования. Усовершенствована технология приготовления новых хлебобулочных изделий: просеянную сыворотку разводят водой в соотношении 1 : 10, добавляют измельченные овсяные хлопья и замачивают на 15 мин; в полученную смесь вводят ингредиенты: подготовленные дрожжи активированные, порошок ИК-сушки из растительных ингредиентов и порошок из яичной скорлупы, размягченное сливочное масло, просеянную муку с аскорбиновой кислотой; производят замешивание теста в течение 7–8 мин при увеличенной скорости до однородной консистенции; тесто оставляют для брожения на 35 мин, разделывают на шарики массой 50 г и ставят на расстойку на 20 мин, выпекают при температуре 180–200°С в течение 20 мин. Установлено, что ускоренная механическая обработка интенсифицирует процессы приготовления теста, сокращая их продолжительность, мин: брожения с 75 до 35, расстойки с 55 до 20, выпечки от 5 до 2 по сравнению с контрольным образцом. Потребление разработанных хлебобулочных изделий удовлетворяет от 10 до 15% суточной потребности организма в β-каротине, кальции и белке. Разработанные хлебобулочные изделия соответствуют требованиям ТР ТС 021/2011 и рекомендованы в качестве функциональных продуктов детского, диетического и геронтологического питания. Bakery products on the basis of the dry demineralized whey powder Wimm-Bill-Dann with addition of fine powder of an egg shell of mechanochemical processing and vegetable powders of infrared processing from beet, a cranberry and carrots are developed. With the help of mathematical modeling by solving problems of linear programming the optimal ratio of the ingredients of the formulations presented in the form of an information matrix for the design are selected. The technology of preparation of new bakery products is improved: the sifted serum is diluted with water in a ratio of 1 : 10, the crushed oat flakes are added and soaked for 15 min; the ingredients are introduced into the resulting mixture: prepared activated yeast, IR drying powder from plant ingredients and eggshell powder, softened butter, sifted flour with ascorbic acid; kneading the dough for 7–8 min at an increased speed to a homogeneous consistency; the dough is left to ferment for 35 min, cut into balls weighing 50 g and put on proofing for 20 min and bake at 180–200°C for 20 min. It was found that accelerated machining intensifies the dough preparation processes, reducing their duration, min: fermentation from 75 to 35, proofing from 55 to 20, baking from 5 to 2 compared to the control sample. The consumption of the developed bakery products meets from 10 to 15% of the daily needs of the body in β-carotene, calcium and protein. The developed bakery products conform to requirements of TR CU 021/2011 and are recommended as functional products of baby, dietary and gerontological food.

The Hand as a Homunculus – A Perspective from Hand Acupuncture Therapy

2020 ◽  
Vol 25 (02) ◽  
pp. 251-255
Author(s):  
Du Hyun Ro ◽  
Hyun Sik Gong
Keyword(s):  
Acupuncture Therapy ◽  
Alternative Medicine ◽  
Human Body ◽  
Scientific Evidence ◽  
The Body ◽  
Scale Model ◽  
Human Being ◽  
Scientific Fields

Homunculus is a term used to refer to any representation of a miniature human being. In scientific fields, the word homunculus has been used to refer to any scale model of the human body that represents physiological, psychological, or other human functions. The hand is thought as a homunculus of the body in Hand Acupuncture Therapy, a type of alternative medicine in Korea. Hand acupuncture therapists believe stimulating the hand can improve bodily health. Although there is a need for scientific evidence regarding this concept, those that perform hand acupuncture seem to recognize the importance of hand in our body.

scholarly journals Alpha-Glucosidase and Alpha-Amylase Inhibitory Activities of Novel Abietane Diterpenes from Salvia africana-lutea

Antioxidants ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 421 ◽  
Author(s):  
Etsassala ◽  
Badmus ◽  
Waryo ◽  
Marnewick ◽  
Cupido ◽  
...  
Keyword(s):  
Methanolic Extract ◽  
High Resolution Mass Spectrometry ◽  
Ultra Violet ◽  
Cape Floristic Region ◽  
The Body ◽  
Alpha Amylase ◽  
Inhibitory Activities ◽  
Abietane Diterpenes ◽  
Alpha Glucosidase

The re-investigation of a methanolic extract of Salvia africana-lutea collected from the Cape Floristic Region, South Africa (SA), afforded four new abietane diterpenes, namely 19-acetoxy-12-methoxycarnosic acid (1), 3β-acetoxy-7α-methoxyrosmanol (2), 19-acetoxy-7α-methoxyrosmanol (3), 19-acetoxy-12-methoxy carnosol (4), and two known named clinopodiolides A (5), and B (6), in addition to four known triterpenes, oleanolic, and ursolic acids (7, 8), 11,12-dehydroursolic acid lactone (9) and β-amyrin (10). The chemical structural elucidation of the isolated compounds was determined on the basis of one and two dimensional nuclear magnetic resonance (1D and 2D NMR), high-resolution mass spectrometry (HRMS), ultra violet (UV), fourier transform infrared (IR), in comparison with literature data. The in vitro bio-evaluation against alpha-glucosidase showed strong inhibitory activities of 8, 10, and 7, with the half inhibitory concentration (IC50) values of 11.3 ± 1.0, 17.1 ± 1.0 and 22.9 ± 2.0 µg/mL, respectively, while 7 demonstrated the strongest in vitro alpha-amylase inhibitory activity among the tested compounds with IC50 of 12.5 ± 0.7 µg/mL. Additionally, some of the compounds showed significant antioxidant capacities. In conclusion, the methanolic extract of S. africana-lutea is a rich source of terpenoids, especially abietane diterpenes, with strong antioxidant and anti-diabetic activities that can be helpful to modulate the redox status of the body and could therefore be an excellent candidate for the prevention of the development of diabetes, a disease where oxidase stress plays an important role.

THREE‐DIMENSIONAL INDUCED POLARIZATION AND ELECTROMAGNETIC MODELING

Geophysics ◽  
1975 ◽  
Vol 40 (2) ◽  
pp. 309-324 ◽  
Author(s):  
Gerald W. Hohmann
Keyword(s):  
Integral Equation ◽  
Green's Functions ◽  
Green’S Functions ◽  
Three Dimensional ◽  
Induced Polarization ◽  
The Body ◽  
Scale Model ◽  
Two Dimensional ◽  
Electromagnetic Modeling ◽  
The Earth

The induced polarization (IP) and electromagnetic (EM) responses of a three‐dimensional body in the earth can be calculated using an integral equation solution. The problem is formulated by replacing the body by a volume of polarization or scattering current. The integral equation is reduced to a matrix equation, which is solved numerically for the electric field in the body. Then the electric and magnetic fields outside the inhomogeneity can be found by integrating the appropriate dyadic Green’s functions over the scattering current. Because half‐space Green’s functions are used, it is only necessary to solve for scattering currents in the body—not throughout the earth. Numerical results for a number of practical cases show, for example, that for moderate conductivity contrasts the dipole‐dipole IP response of a body five units in strike length approximates that of a two‐dimensional body. Moving an IP line off the center of a body produces an effect similar to that of increasing the depth. IP response varies significantly with conductivity contrast; the peak response occurs at higher contrasts for two‐dimensional bodies than for bodies of limited length. Very conductive bodies can produce negative IP response due to EM induction. An electrically polarizable body produces a small magnetic field, so that it is possible to measure IP with a sensitive magnetometer. Calculations show that horizontal loop EM response is enhanced when the background resistivity in the earth is reduced, thus confirming scale model results.

Strength and Drying Shrinkage of Pavement Concrete with Nano-Particles

2013 ◽  
Vol 662 ◽  
pp. 182-185
Author(s):  
Mao Hua Zhang ◽  
Hong Guang Wang
Keyword(s):  
Chemical Properties ◽  
Drying Shrinkage ◽  
Nano Particles ◽  
Shrinkage Rate ◽  
Nano Materials ◽  
Nano Tio2 ◽  
Science Field ◽  
Ordinary Concrete ◽  
Nano Sio2 ◽  
Pavement Concrete

With the development of national economy in Mainland China, the heavier vehicles and traffic flow have arisen in highway transportation. Concrete pavement has high strength and good durability, and thus is widely used in high-grade highway. Due to the small dimension, nano- materials have many unique physical and chemical properties, and become the focus of material science field. In this thesis, based on the unique characteristics of nano-materials, the ordinary concrete with nano-SiO2 or nano-TiO2 is prepared to research the drying shrinkage of pavement concrete. The test results indicate that the concrete with nano-SiO2 and nano-TiO2 in the amount of 2.0% and 1.0% by weight of binder have the respectively biggest drying shrinkage rate of the same concrete type, which are significantly increased than the ordinary concrete. After 28 days, the dying shrinkage rate of the concrete with nano-TiO2 is 1.6 times to the ordinary concrete.

Resolving Turbulent Wakes

2003 ◽  
Vol 125 (5) ◽  
pp. 823-834 ◽  
Author(s):  
Stephen A. Jordan
Keyword(s):  
Fourth Order ◽  
Incompressible Flows ◽  
Spectral Characteristics ◽  
The Body ◽  
Scale Model ◽  
Inertial Subrange ◽  
Spectral Energy ◽  
Turbulent Statistics ◽  
Convective Derivative ◽  
Fifth Order

Resolving the turbulent statistics of bluff-body wakes is a challenging task. Frequently, the streamwise grid point spacing approaching the vortex exit boundary is sacrificed to gain near full resolution of the turbulent scales neighboring the body surface. This choice favors the solution strategies of direct numerical and large-eddy simulations (DNS and LES) that house spectral-like resolving characteristics with inherent dissipation. Herein, two differencing stencils are tested for approximating four forms of the convective derivative in the DNS and LES formulations for incompressible flows. The wake spectral characteristics and conventional parameters are computed for Reynolds numbers Re=200 (laminar wake) and Re=3900. These tests demonstrated reliable stability and spectral-like accuracy of compact fifth-order upwinding for the advective derivative and fourth-order cell-centered Pade´ (with fourth-order upwinding interpolation) for the Arakawa form of the convective derivative. Specifically, observations of the DNS computations suggest that best results of the wake properties are acquired when the inertial subrange of the spectral energy is fully resolved at the grid-scale level. The LES solutions degraded dramatically only when the fifth-order upwind stencil resolved the spanwise periodic turbulence. Although the dynamic subgrid-scale model showed strong participation on the instantaneous level, its spectral contributions were negligible regardless of the chosen grid-scale scheme.

Complementary health food rich in micronutrients

2016 ◽  
Vol 35 (4) ◽  
Author(s):  
Arpitha Gaddam ◽  
Kavita Waghray ◽  
Srinivas Maloo
Keyword(s):  
Dietary Fiber ◽  
Finger Millet ◽  
Control Sample ◽  
Good Health ◽  
The Body ◽  
Health Food ◽  
Hedonic Scale ◽  
Calcium Iron ◽  
Fiber Proteins ◽  
Different Levels

A health food was developed by blending ragi malt (finger millet malt) with oats flour to avail complementary health benefits. Micronutrients are essential for growth and development of children below five years, for proper functioning of every system in the body and are vital for good health. Finger millet is rich source of calcium, iron and dietary fiber, while oats are dense with dietary fiber, proteins, vitamins, minerals and phytochemicals. Ragi malt was blended with oats flour at different levels 10%, 20% and 30% respectively. The incorporated products were subjected to sensory analysis by a panel of 30 members using 5 point Hedonic scale. Formula 1 (10% oats flour formulation) was rated superior to control sample. The superior sample was analyzed and results were compared with FSSAI standards for Malt Based Foods. Shelf life of the product was about 90 days under ambient environment when packed and stored in metallized polyester

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