Asian Journal of Physical and Chemical Sciences最新文献

{"title":"Synthesis of (2Z)-4,6-Diphenyl-N-((2-(Piperidin-1-yl)Ethyl]-2H-1,3-Thiazin-2-Imino Hydrochloride and its Antimicrobial Activities","authors":"O. B. Ovonramwen, B. Owolabi, A. P. Oviawe","doi":"10.9734/ajopacs/2019/v7i330096","DOIUrl":"https://doi.org/10.9734/ajopacs/2019/v7i330096","url":null,"abstract":"Aim: The study aims to synthesize, characterize, and screen (2Z)-4,6-diphenyl-N-((2-(piperidin-1-yl)ethyl]-2H-1,3-thiazin-2-imino hydrochloride for microbial activities. \u0000Methodology: A (2Z)-4,6-diphenyl-N-((2-(piperidin-1-yl)ethyl]-2H-1,3-thiazin-2-imino hydrochloride was synthesized via two-steps reaction from chalcone using acetophenone and benzaldehyde, further cyclized with thiourea and later N-alkylated with 1-(2-chloroethyl)piperidine hydrochloride, its purity was tested by thin-layer chromatography (TLC) and characterized by Fourier transform infrared spectroscopy (FT-IR), proton nuclear magnetic resonance (NMR) and nuclear magnetic resonance (13C-NMR) and screened against Pseudomonas aeruginosa, Escherichia coli, Bacillus subtilis, methicillin-susceptible Staphylococcus aureus, methicillin-resistant Staphylococcus aureus, and Candida albicans using the standard microbiological method. \u0000Results: A golden yellow needle-like crystals (2Z)-4,6-diphenyl-N-((2-(piperidin-1-yl)ethyl]-2H-1,3-thiazin-2-imininium hydrochloride with Rf, 7 EtOAc: 3 Pet (0.75) and MP, 285-287oC was synthesized and the in vitro antimicrobial study of the compound exhibited moderate activities in comparison with standard ciprofloxacin and itraconazole. \u0000Conclusion: A new (2Z)-4,6-Diphenyl-N-((2-(piperidin-1-yl)ethyl]-2H-1,3-thiazin-2-imininium hydrochloride was synthesized using Claisen-Schmidt condensation, Michael addition and N-alkylation shows moderate antimicrobial activities against E. coli, B. subtilis, methicillin-susceptible S. aureus, methicillin-resistant S. aureus and C. albicans.","PeriodicalId":8541,"journal":{"name":"Asian Journal of Physical and Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86329477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Radiological Risk Assessment of Drinking Water from Ignatius University Quarters, Rumuolumeni, Nigeria","authors":"C. Ononugbo, T. I. Amadi","doi":"10.9734/ajopacs/2019/v7i330095","DOIUrl":"https://doi.org/10.9734/ajopacs/2019/v7i330095","url":null,"abstract":"Aims: The aim of this study was to assess the level of natural radioactivity in drinking water (tap water) from Ignatius university staff quarters in order to determine the radiological health risks associated with consumption of such water. \u0000Study Design:  This study was purely an experimental work which involves collection of samples and laboratory analysis. \u0000Place and Duration of the Study: the study was carried out at Ignatius university staff quarters and some lecture halls within the institution between May 2018 and March 2019. \u0000Methodology: Twenty three (23) samples of drinkable water was collected from staff quarters and some lecture halls with 1.5 liters plastic containers which was rinsed thrice before collection. The samples were chemically treated by adding nitric acid and then pre-concentrated further by evaporating to certain levels. The residue were transferred to small cylindrical containers which were sealed and kept for 28 days in order to ensure secular equilibrium between 238u, 232th and their progenies and counted with sodium iodide activated with thallium detector. The results obtained were analyzed using some radiation models for radiological health risks.  \u0000Results: The measured activity concentration of natural radionuclides such as 40K, 226Ra and 232Th in drinking water were in the range of 4.14±3.61 to 48.30±3.88 Bql-1, bdl to 188.51±2.69 Bql-1 and bdl to 29.17±3.42 Bql-1 respectively. The mean values of 40K, 226Ra and 232Th are 18.79±4.24, 27.55±5.99 and 17.79 ±2.89 Bql-1 respectively which is higher than their respective recommended safe value. The estimated effective dose for different age groups  ranged from 0.073 to 317.58 mSvy-1 for infants, 0.050 to 78.05 mSvy-1 for children, 0.027 to 237.41 mSvy-1 for teenagers and 0.029 to 51.46 mSvy-1 for adults with mean values of  110.07, 25.92, 68.44 and 12.85 mSvy-1 respectively. The lifetime fatality cancer risk to adult estimated show that, approximately 19 out of 100 may suffer from some form of cancer fatality and 18 out of 1000 may suffer some hereditary effect. \u0000Conclusion: The result showed an elevated radioactivity level with its associated health risk. The populace might be at long term health risk if continuous exposure is maintained.","PeriodicalId":8541,"journal":{"name":"Asian Journal of Physical and Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84743851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancement of Solar Cell Efficiency by Using TiO2 Nanostructure Doped Fe2O3 Dye and Effect Concentration of Solvent on Optical Properties","authors":"A. Hamid, H. Hassan, Fatima Ahmed Osman","doi":"10.9734/ajopacs/2019/v7i330094","DOIUrl":"https://doi.org/10.9734/ajopacs/2019/v7i330094","url":null,"abstract":"Solar energy has the greatest potential of all the sources of renewable energy, as only a small amount of this form of energy could be used, especially when other sources (coal, oil or gas) in the country have depleted. A solar cell is a solid electrical device that converts solar energy directly to electricity. Hybrid solar cells based on inorganic and organic compounds are a promising renewable energy source. \u0000Aims: The aim of this study was to prepare a nanostructured thin film of titanium oxide: doped iron oxide for enhancement of solar cell efficiency. In addition to studying the effect doped on optical properties of titanium oxide nanostructure thin film. \u0000Study Design: The spray pyrolysis deposition method used for preparation the nanostructure material. \u0000Place and Duration of Study: This study was conducted in the department of physics and department of materials sciences, Al-neelain university, between January 2016 and January 2019. \u0000Methodology: Thin films of Titanium Oxide (TiO2) doped Iron Oxide (Fe2O3) have been prepared by chemical spray pyrolysis deposition technique. A laboratory designed glass atomizer was used for spraying the aqueous solution. Which has an output nozzle about 1mm then the film was deposited on preheated cleaned glass substrates at the temperature of 400ºC. we used different concentration to study optical parameters. A 1.5 g TiO2 powder of anatase structure doped with 1.5 g of Fe2O3 was mixed with 2 ml of ethanol and stirred using a magnetic stirrer for 30 minutes to form TiO2 paste to obtain the starting solution for deposition and spray time was 10 s and spray interval 2 min was kept constant. The carrier gas (filtered compressed air) was maintained at a pressure of 105 Nm-2, and distance between nozzle and substrate was about 30 cm ± 1 cm. The thickness of the sample was measured using the weighting method and was found to be around 400 nm. Optical transmittance and absorbance were records in the wavelength range of (200-1100) nm using UV-Visible spectrophotometer (Shimadzu Company Japan). \u0000Results: The results obtained showed that the optical band gap decreased from 5.58 eV before doping to (3.9, 3.81, 3.81 and 3.81 eV) after doped for TiO2:Fe2O3 thin films, this result refers to the broadening of secondary levels that product by TiO2: doping to the Fe2O2 thin films. Also, the results showed the variation of refractive index with wavelength for different concentration after doped of TiO2:Fe2O3 films from this figure, it is clear that n decrease with low concentration and increase with high concentration after doped that mean the density is decreased of this films. In addition the extinction coefficient of TiO2:Fe2O3 thin films recorded before doped and with different concentration (1.1, 1.2, 1.5 and 1.6 mol/L) and in the range of (300 – 1200) nm and after doped it observed from that the extinction coefficient, decrease sharply with the increase of wavelength for all prepared films and all the sample after do","PeriodicalId":8541,"journal":{"name":"Asian Journal of Physical and Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84851519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of GIS in the Assessment of Groundwater Quality in the Yenagoa Watershed of the Niger Delta Region of Nigeria","authors":"Oboshenure Kingsley Karo, F. E. Egobueze, D. Egirani","doi":"10.9734/ajopacs/2019/v7i230093","DOIUrl":"https://doi.org/10.9734/ajopacs/2019/v7i230093","url":null,"abstract":"The spatial variations in groundwater quality in parts of the Yenagoa watershed (YWS) in the Niger Delta Region of Nigeria has been investigated using Geographic Information System (GIS). An understanding of the factors responsible for groundwater vulnerability could facilitate the use of geographic information system in the control and management of groundwater quality. This study is due to the fact that the spatial distribution maps of groundwater quality in the YWS obtained by GIS modeling are not documented. The quality of groundwater accounts for the environmental and human health status of the residents in the YWS. Therefore, twenty (20) water samples obtained from shallow boreholes were analyzed for physicochemical properties. The physicochemical parameters such as pH, conductivity, total dissolved solids, sulphate, nitrate, sodium, chloride, magnesium, total hardness and iron contents were measured using standard laboratory procedure. Except for the iron content, the results obtained from the physicochemical analyses were within limits of the World Health Organization Standards for drinking water. These results were transformed into spatial distribution maps using GIS modeling and interpretation. The Index Overlay method and Inverse Distance weighted method form component parts of the GIS modeling used in the generation of the spatial distribution maps for each physicochemical parameter. These modeled results were related to the World Health Organization (WHO) Standard for drinking water. The maps generated from GIS modeling indicated zones that were suitable for groundwater extraction as opposed to zones unsuitable for groundwater extraction. In conclusion, 55% of the boreholes in the Yenagoa watershed were affected by high iron content.","PeriodicalId":8541,"journal":{"name":"Asian Journal of Physical and Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87144402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis, Properties of a New (Polymer and Chalcone)","authors":"M. Attia","doi":"10.9734/ajopacs/2019/v7i230092","DOIUrl":"https://doi.org/10.9734/ajopacs/2019/v7i230092","url":null,"abstract":"This paper included two objectives: (i) Synthesis of Polymer {poly 2- [1- phenyl -3-(4-methyl phenyl)-4, 5-dihydropyrazole-5-yl-(4-phenoxy carbonyl)] styrene} PMDPCS and structure characterized by FT-IR, 1H-NMR spectra and Uv/Vis and XRD. (ii) Synthesis of chalcone {3-(4-(dimethylamino) phenyl)-2-phenyl-(2E) propen-1-one} (DAPPP) for absorption and fluorescence spectra under different solvents and concentrations.  Also, under various concentrations, organic solvents and pump pulse energies of Nd: YAG laser, the amplified spontaneous emission (ASE) was studied. Additionally, under the same identical conditions, the amplified spontaneous emission spectra of DAPPP in solution were compared with a conventional laser dye of coumarin 503. Finally, the gain and the fluorescence quantum yield of DAPPP were determined.","PeriodicalId":8541,"journal":{"name":"Asian Journal of Physical and Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77617319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Kinetic Approach to the Reduction of Ethylenediaminetetraacetatoferrate(III) Complex by Iodide Ion in Aqueous Acidic Medium","authors":"I. U. Nkole, C. R. Osunkwo","doi":"10.9734/ajopacs/2019/v7i230091","DOIUrl":"https://doi.org/10.9734/ajopacs/2019/v7i230091","url":null,"abstract":"The kinetic approach to the reduction of ethylenediaminetetraacetatoferrate(III) complex (hereafter [Fe(III)EDTA]-) by iodide ion has been studied spectrophotometrically in an aqueous acidic medium. The study was carried out under pseudo-first order conditions of an excess of iodide ion concentration at 28 ± 1, ionic strength (I) = 0.43 coulomb2 mol dm-3 (KNO3) and [H+] = 5.0  10-2 mol dm-3. The [Fe(III)EDTA]- complex was reduced according to the reaction; \u00002[Fe(III)EDTA]- + 2I-  → 2[Fe(II)EDTA]2- + I2 \u0000The rate law is - d[Fe(III)EDTA-]/dt = (a + b[H+])[Fe(III)EDTA-][I-] \u0000The rate of the reaction is first order in oxidant and reductant concentrations, and displayed positive Brønsted-Debye salt effect. On the basis of catalysis by added cation, Michaelis-Menten plots and the absence of intermediates, the outer-sphere electron transfer mechanism is proposed for the reaction.","PeriodicalId":8541,"journal":{"name":"Asian Journal of Physical and Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89691685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of Heavy Metal Levels in Offal Meats (Kidney and Liver) of Beef Sold at Gwagwalada Market, Abuja, Nigeria","authors":"A. Oloruntoba, Isaiah Adukwu Nathaniel","doi":"10.9734/ajopacs/2019/v7i230090","DOIUrl":"https://doi.org/10.9734/ajopacs/2019/v7i230090","url":null,"abstract":"Aims: To determine the concentrations of heavy metals (Cd, Fe, Mn, Pb, and Zn) in kidney and liver of slaughtered cattle. \u0000Study Design:  Analytical method. \u0000Place and Duration of Study: Samples obtained from Gwagwalada abattoir in Abuja, Nigeria and transported University of Abuja, Chemistry Laboratory for analysis. The study lasted for four (4) months. \u0000Methodology: Wet digestion of samples followed by metal analysis using Accusys 211 Bulk Scientific Atomic Absorption Spectroscopy (AAS). \u0000Results: The empirical results indicated that the mean levels or concentration of these heavy metals in kidney of cattle were 47.75±0.002 mg/g Zn, 279.5±0.084 mg/g Fe, 10.00±0.00mg/g Mn, while Cd and Pb were not detected. The levels or concentration of heavy metals in the liver sample were 0.500=±0.000025 mg/g Cd, 57.00±0.0001 mg/g Zn, 119.5±0.0016 mg/g Fe, 5.75±0.000025 mg/g Mn, Pb was not detected. The concentration of Fe and Mn were found to be high in kidney sample than the liver sample. \u0000Conclusion: The evidence from this study revealed the safety of these investigated offal meats as the concentration of these metals in the kidney and liver sample were within the maximum permissible limit according to the European Commission (EC) and FAO/WHO standards.","PeriodicalId":8541,"journal":{"name":"Asian Journal of Physical and Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78313338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Estimation of Radio Horizon Distance Using Measured Meteorological Parameters over Some Selected Locations in Nigeria","authors":"A. Adediji, S. Adebusola, J. Ojo","doi":"10.9734/AJOPACS/2019/V7I230089","DOIUrl":"https://doi.org/10.9734/AJOPACS/2019/V7I230089","url":null,"abstract":"In this study, results of the variation of maximum and minimum radio horizon distance derived from the computation of surface refractivity through measurement of temperature, relative humidity and pressureacrosssevenlocations((Akure (7.15°N, 5.12°E), Lagos (6.30°N, 3.20°E), Abuja (7.10°N, 9.25°E), Jos (9.50°N, 8.50°E), Makurdi (7.30°N,8.53°E), Port-Harcourt(4.20°N,7.00°E), and Nsukka (6.90°N,7.67°E)) in Nigeria are presented. Two years (Jan., 2011–Dec., 2012) archived data as provided by Tropospheric Data Acquisition Network (TRODAN) of the Centre for Atmospheric Research Anyigba, Kogi State were utilized for the study. Results showed that the values of surface refractivity (Ns) were low during the dry season months and high during the wet season months and also there was high value of NS at the coastal areas compared with the inland areas. It was also deduced that the mean value of NS for Abuja, Akure, Jos, Lagos, Markurdi, Nsukka and Port-Harcourt is 355, 362, 303, 391, 375, 361 and 399 N-units respectively. Results showed that the Radio Horizon Distance (RDH) values were generally low during the wet season months and high during the dry season months. The variability of radio horizon distance of transmitting antennas is higher in the Northern part of Nigeria than the southern part.","PeriodicalId":8541,"journal":{"name":"Asian Journal of Physical and Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83355617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rice Husk Ash Pozzolan as Valuable Supplement in Concrete for Industrial and Domestic Applications","authors":"A. Duke, E. Eno","doi":"10.9734/AJOPACS/2019/V7I130088","DOIUrl":"https://doi.org/10.9734/AJOPACS/2019/V7I130088","url":null,"abstract":"Controlled burning of rice husks at<700°C produced rice husk ash (RHA) which is predominantly amorphous silica (SiO2). RHA was used as a substitute for laterite and cement in proportions of 5%, 10%, 15%, 20%, 25% and 30% of concrete. The concrete was cured for 7 days, 14 days, 21 days, and 28 days respectively. It was observed that 20% of RHA provides the optimum strength. The effects of different particle sizes of 75, 150, 212, 300, 425 and 600 microns (µm) were tested using a compression test machine. A graph of average strength against particle size indicates 2.9 Nm-2 as the optimum strength at 75 µm and 1.2 Nm-2 as the minimum at 150 µm. From the ash size distribution, the presence of grains of several different sizes was observed. The grains were weighed using a weighing machine and a graph of particle size against percentage plotted to determine the particle size distribution. This showed that rice husk ash (RHA) is coarse grain material.","PeriodicalId":8541,"journal":{"name":"Asian Journal of Physical and Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88266757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of Li+ Doping Concentration on Structure and Photoluminescence of the Y2O3: Ho3+/Yb3+ Up-conversion Film","authors":"Min Sun, W. Hou, Juncheng Liu, Lifang Nie","doi":"10.9734/AJOPACS/2019/V7I130087","DOIUrl":"https://doi.org/10.9734/AJOPACS/2019/V7I130087","url":null,"abstract":"The Li+ co-doped Y2O3: Ho3+/Yb3+ films were prepared with sol-gel method and spin-coating technique. The effects of Li+ on the structure and luminescent properties of the films were investigated. The results show the grain size increased first and then decreased with the increase of Li+ doping concentration. The crystal size of particles composing the film got the maximum value when Li+ concentration took 4 mol%. As Li+ doping concentration increased, the optical transmittance of the Y2O3: Ho3+/Yb3+ film improved at first then reduced and got the maximum at 3 mol%. Excited with a 980-nm laser, there were two green emissions in the up-conversion emission spectra, one centered at 535 nm, the other at 550 nm, which ascribed to the 5F4→5I8 and 5S2→5I8 transitions of Ho3+, respectively. The up-conversion luminescence intensity also increased firstly and then decreased with the Li+ doping concentration increase, and got the highest value at 2 mol%.","PeriodicalId":8541,"journal":{"name":"Asian Journal of Physical and Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86004964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}