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Growing arugula plants using aeroponic culture with an automated irrigation system

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International Journal of Agricultural and Biological engineering 2020年第3期13卷 52-56页

作者： Jhon D.Ríos Salazar John e.Candelo-Becerra fred. e.hoyos velasco escuela de Física Facultad de CienciasUniversidad Nacional de ColombiaSede MedellínColombia Departamento de energía eléctrica y Automática Facultad de MinasUniversidad Nacional de ColombiaSede MedellínColombia

The paper presents an efficient form of growing arugula plants by means of automatic control of an aeroponic culture irrigation *** system considers a reprogrammable electronic circuit that uses software to generate different irrigation cycles to obtain an adequate growth of arugula *** show how different samples grown in a greenhouse had the same growth behavior as field-grown samples during the test *** was possible to obtain a more efficient and sustained five-week production to supply consumers by having a continuous cycle irrigation system,which was operated for 35 *** growth and number of leaves were maintained in a similar way for different plants *** grow similarly,but some of them showed size differences during the five weeks.

关键词： aeroponic culture arugula plants food production irrigation systems smart system

Implementing 802.11 With Microcontrollers : Wireless Networking for embedded Systems Designers 1

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Mapping of groundwater potential zones in the drought-prone areas of south Madagascar using geospatial techniques

丛书名： embedded technology series

2005年

作者： eady fred.

ISBN: (数字)9780080457284

ISBN: (纸本)9780750678650;9780080457284

Wireless networking is poised to have a massive impact on communications, and the 802.11 standard is to wireless networking what ethernet is to wired networking. There are already over 50 million devices using the dominant Ieee 802.11 (essentially wireless ethernet) standard, with astronomical growth predicted over the next 10 years. New applications are emerging every day, with wireless capability being embedded in everything from electric meters to hospital patient tracking systems to security devices. This practical reference guides readers through the wireless technology forest, giving them the knowledge, the hardware and the software necessary to design a wireless embedded device rapidly, inexpensively, and effectively. Using off-the-shelf microcontrollers from Microchip and Atmel, the author provides step-by-step instructions for designing the hardware and firmware for a fully operational wireless networking device. The book gives a thorough introduction to 802.11 technology and puts it into perspective against the other wireless standard options. Just enough theory and mathematics is provided to give the depth of understanding needed for practical design work. The book thoroughly covers: * Laptop wireless ethernet card introduction and theory *Introduction to CompactFlash-to-microcontroller interfacing* Implementing the laptop wireless ethernet card in an embedded environmentIn addition, the book includes a CDROM containing all of the code, schematics and programs necessary to implement embedded 802.11 wireless networking. * Covers the hottest new embedded market area- wireless networking* Shows designers how to save money and time by using microcontrollers in their embedded wireless designs instead of expensive, complex prefab boards* CD-ROM accompanying book contains all the code, schematics and programs necessary to get started now!

关键词： Wireless communication systems.embedded computer systemsDesign and construction.

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Geoscience Frontiers 2020年第4期11卷 1403-1413页

作者： Charles Serele Ana Perez-hoyos Francois Kayitakire UNICeF Madagascar european Commission Joint Research Centre(JRC)Via E.Fermi 2749I-21027IspraVAItaly

The southern regions of Madagascar have the country’s lowest water supply coverage and are highly vulnerable to *** to potable drinking water is a major challenge for the local *** droughts lead to annual emergency appeals to save the lives of acute malnourished ***’s response consisting in providing potable drinking water through the drilling of boreholes has been challenged by the complex hydrogeology,the low yield of boreholes and high-level salinity of water,the lack of reliable groundwater data and the weak capacity of the drilling *** constraints result in a high rate of drilling *** improve drilling success and provide more potable drinking water to local communities,it is vital to undertake reliable groundwater *** Madagascar and the european Union delegation in Madagascar collaborated on the use of satellite imagery to improve sector knowledge and access to safe and clean water for local communities in southern *** methodology relies on produce thematic layers of groundwater potential ***,these thematic layers were overlaid with ground-based hydrogeological data to map the groundwater potential zones(GWP) and identify the most suitable sites for borehole siting and *** of this study are very encouraging,and the integrated approach used has proven its applicability in mapping groundwater potential areas in the eight drought-affected areas of south *** groundwater potential zone map is being used by UNICeF and partners to plan water supply projects and identify the best sites for positioning new boreholes and reduce the likelihood of drilling ***,the project developed a database of groundwater resources,which will improve knowledge of the regional hydrogeological context and strengthen the capacity of the water *** learnt from this study show that an integration of the groundwater potential zone map with demographics a

关键词： Groundwater potential zones(GWP) Overlay analysis Remote sensing Geographic information system(GIS) South Madagascar

Results of an eight Year Long Practice of Saline Bipolar Transurethral Resection of Prostate

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Open Journal of Urology 2024年第4期14卷 189-196页

作者： Sossa Jean Mangoue Moube Ariane Landry Yevi Dodji Inès Magloire Hodonou fred.Avakoudjo Déjinnin Josué Georges Centre National Hospitalier Universitaire Hubert Koutoucou Maga Cotonou Benin

Background: Open prostatectomy has long been the only prostatic bladder outlet obstruction’s surgery available in Benin. It is prone to postoperative bleeding and infections and is not suitable for prostate cancer-induced bladder outlet obstruction. Objective: To evaluate the first results of endoscopic surgery of prostatic bladder outlet obstruction in our environment. Patients and Method: We conducted an observational study of saline bipolar transurethral resection of prostate (B-TURP) at the former Military Teaching Hospital of Cotonou. We retrospectively collected the data from patients’ medical records from November 17, 2014, to September 7, 2022. We used excel 2019 to make a descriptive analysis of the data. Results: Saline B-TURP was performed in 60 consecutive patients. Their mean age was 69.1 years (range: 48-85). The procedure was indicated in 22 (36.7%), 32 (53.3%), 3 (5%), and 3 (5%) patients, respectively for acute urinary retention, chronic urinary retention, obstructive renal failure, and unresponsiveness to alpha-blockers. 35 patients (58.3%) had prostate cancer (PCa). 25 patients (41.7) had benign prostate hyperplasia (BPH). No patient got a blood transfusion. The duration of postoperative hospitalization was 3 days (88.3%) to 5 days (11.7%). 5 patients (8.3%), i.e., 3 BPH and 2 prostate cancer patients got preoperative urinary tract infection. The causative bacteria were escherichia coli in 3 patients (60%), Klebsiella pneumoniae in 2 patients (40%), and multi-resistant Acinetobacter as a metachronous infection to escherichia coli in 1 patient (20%). All the infections were associated with indwelling Foley catheter. 7 patients (11.7%), i.e., 3 BPH and 4 prostate cancer patients, got a second resection to recover full spontaneous micturition. Prostate size was available in the medical record of 21 BPH patients and 15 prostate cancer patients. Prostate size ranged from 22 to 123 g with a mean value of 61.1 g in BPH patients, and from 34 to 180 g with

关键词： Saline B-TURP BPH Prostate Cancer

Application of Predictive Model for efficient Cassava (Manihot esculenta Crantz) Yield in the Face of Climate Variability in enugu State, Nigeria

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American Journal of Climate Change 2024年第2期13卷 361-389页

作者： emeka Bright Ogbuene Tonia Nkiru Nwobodo Obianuju Gertrude Aloh Achoru fred.emeka Josiah C. Ogbuka Vivian Amarachi Ozorme Andrew M. Oroke Obiageli Jacinta Okolo Anwara Obianuju Amara e. S. enemuo Centre for environmental Management and Control (CeMAC) University of Nigeria Nsukka Nigeria Department of Geography University of Nigeria Nsukka Nigeria Department of Geography and Meteorology Enugu State University of Science and Technology (ESUT) Enugu Nigeria School of Civil engineering Newcastle University Newcastle upon Tyne UK

Climate variability as occasioned by conditions such as extreme rainfall and temperature, rainfall cessation, and irregular temperatures has considerable impact on crop yield and food security. This study develops a predictive model for cassava yield (Manihot esculenta Crantz) amidst climate variability in rainfed zone of enugu State, Nigeria. This study utilized data of climate variables and tonnage of cassava yield spanning from 1971 to 2012;as well as information from a questionnaire and focus group discussion from farmers across two seasons in 2023 respectively. Regression analysis was employed to develop the predictive model equation for seasonal climate variability and cassava yield. The rainfall and temperature anomalies, decadal change in trend of cassava yield and opinion of farmers on changes in rainfall season were also computed in the study. The result shows the following relationship between cassava and all the climatic variables: R2 = 0.939;P = 0.00514;Cassava and key climatic variables: R2 = 0.560;P = 0.007. The result implies that seasonal rainfall, temperature, relative humidity, sunshine hours and radiation parameters are key climatic variables in cassava production. This is supported by computed rainfall and temperature anomalies which range from −478.5 to 517.8 mm as well as −1.2˚C to 2.3˚C over the years. The questionnaire and focus group identified that farmers experienced at one time or another, late onset of rain, early onset of rain or rainfall cessation over the years. The farmers are not particularly sure of rainfall and temperature characteristics at any point in time. The implication of the result of this study is that rainfall and temperature parameters determine the farming season and quantity of productivity. Hence, there is urgent need to address the situation through effective and quality weather forecasting network which will help stem food insecurity in the study area and Nigeria at large. The study made recommendations such as a

关键词： Climate Variability Cassava (Manihot esculenta Crantz) Predictive Model Yield

Recent developments of the stoichiometric displacement model for separation processes

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Chinese Science Bulletin 2001年第21期46卷 1763-1772页

作者： GeNG Xindu fred.e.Regnier WANG Yan Institute of Modern Separation Science Northwest Universitythe Key Lab of Modern Separation Science of Shaanxi ProvinceXi’an 710069China Department of Chemistry Purdue UniversityWest LafayetteIN 4 7907USA

Substantial attention has been paid to the stoi-chiometric displacement models for solute retention (SDM-R) in liquid chromatography and adsorption (SDM-A) at surfaces since they were developed. The SDM has a strongly theoretical basis and has evolved to the point that it is widely applied in chemistry, biochemistry, molecular biology and biotechnology. This review introduces the history, recent developments, and new concepts relating to the SDM, including theory, mathematical expressions, and applications across a broad range of fields.

关键词： liquid chromatography liquid-solid system stoichiomet- ric displacement retention model adsorption mechanism protein folding.

IRIS BeHAVIOUR AFTeR YAG LASeR IRI- DOTOMY IN A CASe OF PIGMeNTARY DISPeRSION SINDROMe PHOTODOCU- MeNTeD WITH ARTeMIS ULTRALINK SCAN

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国际眼科杂志 2003年第1期3卷 15-16页

作者： J.hoyos-Chacon M.Cigales J.e.hoyos Instituto Oftalmoloogico hoyos SpainInstituto Oftalmoloogico Hoyos SpainInstituto Oftalmoloogico Hoyos Spain

Purpose: To evaluate the iris movement after Yag laser peripheric iridotomy, that is a proposed treatment for the posterior iris bowing observed in pigmentary dispersion syndrome. Methods: The posterior iris bowing is described like one of the etiologic mechanism in the pigmentary dispersion syndrome, because of the rubbing of the posterior iris face with the zonula. We present a pa-

关键词：色素弥散综合征 YAG激光虹膜周围切开术虹膜行为病例报告

Mathematical epidemiology:Past,present,and future

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Infectious Disease Modelling 2017年第2期2卷 113-127页

作者： fred.Brauer University of British Columbia VancouverBCCanada

We give a brief outline of some of the important aspects of the development of mathematical epidemiology.

关键词： Mathematical epidemiology brief

Response of Solanum tuberosum to Myzus persicae infestation at different stages of foliage maturity

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Insect Science 2014年第6期21卷 727-740页

作者： Adriana e. Alvarez Anahi M. Alberti D'Amato W. fred.Tjallingii Marcel Dicke Ben Vosman Laboratory of entomology Wageningen University 6700 EH Wageningen Plant Breeding Wageningen UR 6700 AA Wageningen ePG systems 6703CJ Wageningen the Netherlands

Young leaves of the potato Solanum tuberosum L. cultivar Kardal contain resistance factors to the green peach aphid Myzuspersicae （Sulzer）（Hemiptera： Aphididae） and normal probing behavior is impeded. However, M. persicae can survive and reproduce on mature and senescent leaves of the cv. Kardal plant without problems. We compared the settling ofM. persicae on young and old leaves and analyzed the impact of aphids settling on the plant in terms of gene expression. Settling, as measured by aphid numbers staying on young or old leaves, showed that after 21 h significantly fewer aphids were found on the young leaves. At earlier time points there were no difference between young and old leaves, suggesting that the young leaf resistance factors are not located at the surface level but deeper in the tissue. Gene expression was measured in plants at 96 h postinfestation, which is at a late stage in the interaction and in compatible interactions this is long enough for host plant acceptance to occur. In old leaves of cv. Kardal （compatible interaction）, M. persicae infestation elicited a higher number of differentially regulated genes than in young leaves. The plant response to aphid infestation included a larger number of genes induced than repressed, and the proportion of induced versus repressed genes was larger in young than in old leaves. Several genes changing expression seem to be involved in changing the metabolic state of the leaf from source to sink.

关键词： cDNA microarrays green peach aphid insect-plant interactions potato