bluuebunny/crossref_metadata_2025 huggingface dataset:
Impact of Socio-Economic and Demographic Characteristics of Chronic Obstructive Pulmonary Disease Patients on Hospital Application
Authors: Celikhisar Hakan , Dasdemir Ilkhan Gulay
Published: April 2020

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Amaç: Sosyal aktivitelerin herhangi bir aksilik olmadan yürütülmesi ve hastane uygulamalarının en aza indirilmesi günümüzün KOAH hastalarına yönelik başlıca yaklaşımları arasındadır. Bu, hem işgücü kaybını hem de finansal kayıpları en aza indirmek için özel bir önem taşımaktadır. Çalışmamızın amacı KOAH hastalarının sosyoekonomik ve demografik özelliklerinin acil durum ve hastane uygulaması, hastaneye yatış ve hastanede yatış süresi üzerinde bir etkisi olup olmadığını değerlendirmektir

Yöntem: Hastanemiz akciğer hastalıkları polikliniği ve acil servislerine başvuran toplam 225 hastadan oluşan 45 ile 82 yaşları arasında 78 kadın ve 147 erkek KOAH hastası olmak üzere Mart 2019 ve Eylül 2019 tarihleri ​​arasında prospektif çalışma yapılmıştır. Takip için klinikte hastaneye kaldırıldı. Tüm hastalara 20 sorudan oluşan bir anket uygulandı. Olgularımızın sigara içip içmediği, eğitim durumu, yaşam ortamı, ilaç kullanımı, evlerindeki sağlık kolaylığı (oksijen tüpü-konsantratörü ve / veya nebülizör) ve hastane uygulamaları için değerlendirmeler yapıldı.

Bulgular: Hastaların 78'i (% 34.7) kadın, 147'si (% 65.3) erkek, yaş ortalaması 65.8 + 9.7 (41-84) idi. Hastalarımız arasında geçen yıl 10 kereden fazla hastaneye başvuranların oranı% 18.7 idi. Hastalarımızın% 12'si en az 5 kez uygulanırken 52'si acil durum için geçerli değildi. Tüm olgularımızın% 24'ü hastaneye kaldırıldı. Olgularımızın ortalama yatış süresi (23.4 + 19.7) gündü. 

Sonuç: Kronik obstrüktif akciğer hastalığı olan hastaların hastaneye uygulanması ve hastaneye yatırılması sigara içip içmediklerinden, eğitim düzeylerinden, ekonomik durumlarından, yaşam ortamlarından, düzenli ilaç kullanımından etkilenirken; evlerinde sağlık kolaylığı olması, hastane uygulamalarını etkilemez. Kronik obstrüktif akciğer hastalığı olan hastaların sosyoekonomik ve demografik özellikleri, hastalıklarının prognozunda ve hastane uygulamalarında etkilidir. Bu nedenle, KOAH hastalarının ideal bir yaşam ortamı oluşturma konusunda farkındalığı artırılmalı ve gerekli cihazların alımı ve kullanımı konusunda eğitim ve destek almalıdırlar.
Teachers Preparedness on Implementation of Competence Based Curriculum in Lower Public Primary Schools in Kilifi and Nandi Counties, Kenya
Authors: Chemagosi Mary Jebii
Published: April 2020

The competency based curriculum was introduced in Kenya in 2016 as pilot study for the new curriculum but adapted in 2019 in all pre-schools and lower primary school levels. The curriculum is viewed as a panacea in solving problems of unskilled school leavers with knowledge based to practical based curriculum. The objective of the study was to establish teachers’ preparedness on implementation of competence based curriculum in lower public primary schools in Kilifi and Nandi counties, Kenya. The study used descriptive research design. Data was collected by use of questionnaire, interview schedule and observation schedule. The sample used was 48 head teachers, 48 teachers that were purposively selected. A pilot study was conducted in two schools one from each of the two Counties to pre-test the instruments. The study made use of teachers’ questionnaire, head teachers interview schedule and observation schedule to collect and analyse data from the participants. Validity was ensured by face and content validity while Split-half technique ensured reliability. The quantitative and qualitative data were simultaneously analysed in order to triangulate the findings of the study. The results shows that the overall model is significant (F=6.006, p<0.05) and the coefficient also shows that teacher preparedness contributes significantly on implementation of competency based curriculum (β=0.342, t=7.985, p>0.05).This implies that teacher preparedness significantly influence implementation of competency based curriculum and therefore the hypothesis that there is no significant difference between teachers’ preparedness and implementation of competency based curriculum was rejected. The study recommended that the Ministry of education to ensure teachers are equipped with requisite skills, knowledge and teaching and learning resources to adequately prepare teachers for competency based curriculum.
Women Proficiency for Global Crises Management in Ethiopia
Authors: Debela Bedada Mergitu
Published: April 2020

The COVID-19 virus is a new pathogen that is highly contagious, can spread quickly, and considered capable of causing enormous health, economic and societal impacts in any setting. According to WHO report, about (78%-85%) human-to-human transmission  of the COVID-19 virus is the household transmission have occurred in families. The main  purpose of this article is to assess the potential of women in crises management.  These findings suggest that, women leadership  has a potential advantage  in crises management mainly because,  women are on average more likely than men to adopt a relational approach to leadership. So that  Ethiopia, will  benefit more , hence the country’s  more than half of the population and 50% of top-level leaders are women as a golden opportunity for Ethiopia to easily overcome this pandemic crisis  by engaging a full potential of women at all levels. I recommend for Ethiopian government to use this acknowledged golden opportunity of  having  more women leaders especially at top-level and having women more than half of the population  by mobilizing this women force up  to family level to overcome this pandemic disease more better than any countries in the world.
Effect of Organisational Commitment in Psychological Contract Breach-Organisational Citizenship Behaviour Bond among Medical Doctors
Authors: Koomson Samuel
Published: April 2020

Medical doctors are responsible for leading the care of patients. They are perhaps the most valuable assets of healthcare organisations. Yet, indications signal that medical doctors operating in the Upper East and West Regions of Ghana are bedevilled with severe breaches in their psychological contract, which could probably result in low commitment to their organisation and subsequently, stifle their tendency to be good organisational citizens. The study therefore investigated the interceding effect of organisational commitment in the nexus between psychological contract breach and organisational citizenship behaviour among medical doctors in the Upper East and Upper West Regions of Ghana. 214 medical doctors participated in the study. A validated, semi-structured and self-administered questionnaire was employed. The data collected was subjected to Kaiser-Meyer-Olkin measure of sampling adequacy and Bartlett test of sphericity, as well as reliability and validity tests. Mediating effect was conducted. Control variables were sex, age, employment type and tenure. Significant level was set at 5%. Partial-least squares structural equation modelling was used to analyse the data, with the help of Smart PLS 3.0M.3 software. Consistent with expectations, organisational commitment partially mediated the association between psychological contract breach and organisational citizenship behaviour among medical doctors working in these two regions. The study therefore settled that organisational commitment lessened the effect of a psychological contract breach on the medical doctors’ tendency to be bad organisational citizens. The study therefore recommends managers of Ghana Health Service to consider improving the level of organisational commitment among the medical doctors.
Knowledge Management Strategies and Organisational Performance of Deposit Money Banks in Nigeria
Authors: Opeke R.O. , Oluremi Titilope Adelowo,
Published: April 2020

Performance is a picture of some achievements of every organization, that its operations is either about financial aspects, marketing aspects, raising some aspects of fund and disbursement of funds, technological aspects, as well as aspects of human resources. However, the issues of bank not engaging in knowledge management adversely affected performance. There seems to be paucity of studies on the influence of knowledge management strategies on organizational performance of deposit money banks in Nigeria. This study examined the knowledge strategies and organizational performance of selected deposit money banks in Nigeria.

Survey research design was adopted for the study. The population of the study covered 2,405 management staff of the selected deposit money banks in Lagos State, Nigeria. The sample size of 432 was determined through the Raosoft sample size calculator. Multi stage sampling method was utilized for selecting the respondents. Data were collected through adapted validated questionnaire. The reliability test for the instrument yielded Cronbach’s alpha coefficients for the constructs ranging from 0.77 to 0.89. The instrument achieved a response rate of 100%. Data collected were analyzed using descriptive and inferential statistics.

The result revealed that knowledge management strategies sub-variables had significant effect on organizational performance; knowledge collection (β= 2.746, r = 0.532, T= 12.768, p<0.05), Knowledge provision (β= 0.368, r = 0.092, T= 1.956, p>0.05), knowledge communication (β= 1.211, r= 0.270, T= 6.171, p<0.05), knowledge exchange (β= 0.709, r = 0.254, T= 7.092, p<0.05) and knowledge transfer (β= -0.944, r = -0.163, T= -3.214, p<0.05).

The core objective of this study was to examine the influence of information management practices, knowledge management strategies and organizational performance of selected deposit money banks in Nigeria. Specifically, examined the influence of knowledge management strategies indices (knowledge provision, collection, transfer, communication and exchange) on each of the organizational performance (effective service delivery, profitability, employee satisfaction and teamwork) in Nigeria.

The result of the analysis revealed that knowledge management strategies components have a statistically significant effect on organizational performance and it indices (effective service delivery, profitability, employee satisfaction and teamwork. The result further revealed that some of the indices of knowledge management strategies knowledge transfer have negative significant effect on organizational performance. From the result of the data analysis, it can be concluded that knowledge management strategies plays a major role in achieving continued performance in the organization especially in the deposit money banks under study.Service delivery, profitability, employee satisfaction, teamwork, performance and knowledge management, knowledge management strategies.
Income Inequality- Is it Global or Native Issue?
Authors: Uddin Md. Nezum , Ahmmed Monir , Uddin Khondker Mohammad Burhan
Published: April 2020

Income inequality is a big issue that deserves much more coverage in the policy discussion. It is a global issue. Study found that income inequality is growing worldwide, with increasing per capita GDP. The lowest 40% of the world's population gains less than 25% of the total income. The growing national income is accrued to the wealthiest people around the globe. In many nations, the top 1% of people are receiving an increasing share of income. Not only the poor or developing countries, but also the developed economies are suffering from this disease. This paper noted that income inequality is a global problem, and nations should come out from this crisis; if not, the recent growth will be growth without equality. Since income inequality can be eliminated, and it is a matter of policy choice, policymakers should, therefore, take appropriate measures in this regard.
Code Mixing and Code Switching of Counseling Teacher in Guidance Process (a Case Study in State Vocational School 7 Jember, East Java, Indonesia)
Authors: Pipiet Palestin Amurwani
Published: April 2020

In a multilingual society, code mixing and code switching occur in communication. The purpose of this study is to describe the code switching and code mixing used by counseling teachers in providing counseling guidance at State Vocational High School 7 Jember. Sociolinguistic studies were applied to achieve the objectives of this study The data collected was in the form of counseling teacher's utterances in the process of counseling guidance which contained code mixing and code switching. The data sources are counseling teachers and guidance students. The data is analyzed using theory of code mixing and code switching. The result of this study indicates that counseling teachers use code switching from Indonesian to Javanese to give advice to the students. The use of the code switching is an effort to make the advice given more effective. Code mixing into Javanese occurs due to the background of the native language possessed by the counseling teacher namely Javanese language.

Key Words: language, pandhalungan, sociolinguistics, teacher, tobacco city
A Criminological Examination Of The Use Of Cyberspace To Traffic Drugs In Durban South Africa
Authors: KEVIN SIBANYONI Dr.EPHRAIM
Published: April 2020

This study focused on the use of cyberspace to traffic drugs in Durban, South Africa. The study seeks to determine how cyberspace is used as a tool to traffic drugs in Durban, South Africa; to investigate the current South African laws as deterrence to combat drug trafficking via cyberspace. The studyused the qualitative research method. The data was collected from a sample consisting of eight respondents using the purposive sampling technique. The researchers collected data using semi-structured interviews and the collected data was analyzed through thematic content analysis. The findings depicted that cyberspace is used as a tool to traffic drugs in Durban by providing cyberspace users with the platform to engage in unlimited and secure communication. The use of Virtual Private Networks and The Onion Ring makes it exceptionally difficult to trace cybercriminals. Recommendation: There is a need for more awareness around cybercrime and, more particularly, drug trafficking via cyberspace. More law enforcement officers should be provided with training regarding cyberspace and drug trafficking via cyberspace.
Youth Unemployment: The Cause of Ethnic Conflict and Criminal Activities in Takum Local Government Area of Taraba State Nigeria
Authors: Wajim John
Published: April 2020

This research work examined youth unemployment: the cause of ethnic conflict and criminal activities in Takum LGA of Taraba State, Nigeria. Unemployment to a large extent remains Nigeria’s socio-economic and political problem. Historically, unemployment situation in the country was heightened by introduction of structural adjustment programme (SAP). Both primary and secondary sources of data collection were employed for the success of the research work. Simple percentages were applied on a cross-sectional data of 120 sampled unemployed youths randomly selected from Takum Local Government Area in 2015. The study revealed that lack of employment opportunities stimulate young people to engage in ethnic conflict and criminal activities such as theft, arm robbery etc. In order to survive and earn material success. The study recommends that government should create more jobs opportunities and industries as unemployed youths can also benefit and meet their immediate needs, as this will drastically curtail ethnic conflict and criminal activities by unemployed youths
Single Parenting and Its Effects on the Development of Children in Nigeria
Authors: Wajim John
Published: April 2020

The study examined single parenting and its effects on the development of children in Nigeria. The study revealed that single parents/solo parents lack partners to share financial and child care responsibilities with. The study also unveiled that finance is the major problems encountered by the majority of single parents. This is because majority of the single parents find it difficult to meet the basic needs of their children such as food, clothing, school fees, and other personal needs. This also accounts for the difficult in maintaining discipline among their children. The study concluded that majority of single parents are faced with economic, emotional and social problems which translate into greater risk of embarking on dangerous behaviors by their children such as drugs, alcohol and criminal activities. A secondary source of data collection was used for this study. The study recommends that government should create more job opportunities and increase wages as such single parent can also benefit in order to cope with the difficulties they face. Also single parents should engage in savings such as local contribution, that no matter how small their income may be, they may be able to satisfy the required needs of their household, which to some extent will also curtail the crime rate in our dear macrocosm by the children of solo parents.
The Implication of Granting Righ to Build for Commanditaire Vennootschap (CV) based on Circular Letter of the Ministry of Agrarian Affairs and Spatial Planning / Head of National Land Agency Number2/SE-HT.02.01/VI/2019Concerning the Granting Right To Build for Commanditaire Vennootschap
Authors: Bhumi Adjani Mayang , Sentot Sudarwanto Albertus
Published: April 2020

The study aimed to determine the implication and position of granting Right To Build status to the Commanditaire Venootschap based on Circular Letter 2/SE-HT.02.01/VI/2019 concerning the Granting Right To Build for Commanditaire Vennootschap (CV). In the implementation, circular letter has not been able to provide certainty and clear legal auspices regarding the CV that can apply for Right To Build (HGB). This study used a normative juridical research method, namely library research by collecting primary, secondary and tertiary legal materials such as books, legal scientific papers, other literature materials that explained the study to be discussed. Based on the result of the study, the position of the circular letter in the hierarchy of law and regulation, as well as the norms in it, the granting Right To Build for a CV was contrary to existing rules. Circular letter referred to the Basic Agrarian Law (UUPA) and Government Law (PP) No. 40/1996 is as the basis for granting the Right To Build for CV contrary to the law itself. CV cannot be compared to a legal entity. According to the author, the circular letter did not guarantee legal certainty because of the registration of the Right To Build for CV by mentioning on behalf of all allies in the CV personally (individuals), while the completeness documents in the name of CV. The implications of the circular letter can cause confusion and various potential risks. The CV cannot fulfill the elements as a legal entity, and the position of the circular letter was not in the hierarchy of statutory regulations because it was only limited to a technical guideline for a general regulation. If active and passive allies from a CV wanted to apply for land rights, it would be safer if an upgrade is made from a CV to a Limited Liability Company (PT). Additionally, it provided an opportunity for allies to be free from responsibility to personal property.  Related to the discussion of CV, it is better to have further study on the discussion of the Bill that regulates CV business entities in order to have a clear legal shade.
Academic Achievement and Life Satisfaction of Students in Mathematics in Positive Education Intervention
Authors: Arenas Joel , Kwong Man Yiu
Published: April 2020

Positive education takes the study of happiness and wellbeing to inspire and help learners, schools and societies to progress. This study investigated the significant differences in the means of the pretest and posttest of students’ academic achievement and their life satisfaction in Mathematics. The relationship of students’ academic achievement and their life satisfaction in Mathematics was also measured. A total of one hundred twenty students (60 in the experimental group and 60 in the control group) from the two secondary schools in Maguindanao, Philippines living in a hostile environment were chosen and involved in the study. Results showed that there is a significant difference in the means of the pretest and posttest results of academic achievement of students in Mathematics both in the control and experimental group. The means of the pretest and posttest results of students’ life satisfaction in Mathematic were only significant in the experimental group of one school. Furthermore, there is no significant relationship between the academic achievement of students and their life satisfaction in Mathematics. The practical implication of the findings suggests that positive education intervention is also an effective strategy  to improve academic achievement. Life satisfaction on the other hand is subjective and perceived differently by the learners.
Efecto del agua y nitrógeno en alfalfa (Medicago sativa L.) bajo riego por goteo
Authors: Fimbres Fontes Adan , Navarrete Miranda José Ramón
Published: April 2020

En México, la alfalfa es el cultivo forrajero más importante. Durante los últimos años, la superfi- cie nacional sembrada con esta leguminosa alcan- zó alrededor de 230,000 ha, de las cuales 30,000 ha fueron cultivadas bajo condiciones de riego su- perficial en las zonas ganaderas productoras de le- che y carne del Noroeste del país. En la región de Caborca, Sonora, actualmente se siembran alrede- dor de 1,015 ha de alfalfa. El agua es el factor más limitante en la producción de cualquier cultivo en la región. Esta investigación se realizó durante el año 2005 en el Sitio Experimental del Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias (INIFAP) de Caborca, Sonora. Los objetivos de esta investigación fueron determinar la dosis de nitrógeno y el porcentaje de la evapo- transpiración de referencia (ETo) asi como el me- jor índice de uso en la eficiencia del agua (UEA). Se evaluaron 9 tratamientos, el factor A con tres dosis de nitrógeno (0, 100 y 200 kg ha-1), el factor B utilizando tres valores de ETo (72%, 128% y 145% de evapotranspiración con un arreglo factorial 3X3 en un diseño completamente al azar con tres repeticiones. Las variables medidas fueron al- tura de planta, peso de forraje verde y seco y lámi- na de agua aplicada. Los resultados mostraron que el nitrógeno aplicado no afectó el rendimiento de alfalfa en un suelo migajón arenoso. Sin embargo, se encontró diferencia significativa en la altura de la planta con dosis de 200 kg ha 1 (mayor altura). La mayor eficiencia en el uso del agua (UEA) fue la de 128% ETo con rendimiento de 23.86 ton ha-1 y 190.40 cm de agua aplicada.
DENSIDAD POBLACIONAL DE MOSCABLANCA Bemisia spp. (HEMIPTERA: ALEYROIDIDAE) EN EL VALLE DE GUAYMAS-EMPALME, SONORA, MÉXICO/ POPULATION DENSITY OF WHITEFLY IN THE GUAYMAS-EMPALME VALLEY, SONORA, MEXICO
Authors: Pacheco-Covarrubias Juan José , Soto Nolasco Joel , Valenzuela Valenzuela Juan Manuel
Published: April 2020

La mosca blanca (Bemisia tabaci) es la plaga más importante en el valle de Guaymas-Empalme, Sonora. Se determinó su densidad poblacional mediante la captura regional de adultos a través de trampas amarillas pegajosas. Los resultados indican valores de pendiente de 0.011, 0.014, 0.0045 y 0.0027 para los ciclos 2011-12, 2012-13, 2013-14 y 2014-15, respectivamente; dichos valores son diferentes estadísticamente entre sí (0.01) prueba de “t”. Por otra parte, el número promedio de individuos capturados por semana para los ciclos antes mencionados fue de 0.67, 0.80, 0.31 y 0.14, respectivamente. Finalmente, el cálculo del número de generaciones que en teoría se pueden acumular mediante Unidades Calor fue de 13.5, 9.36, 15.32, 11.96, para los ciclos antes mencionados. Los resultados no detectan evidencia determinante de la influencia de la temperatura ni del alimento sobre el crecimiento poblacional de la plaga, por lo que el manejo de focos de infestación de la plaga y el ordenamiento de fechas de cultivos son determinante para la definición del estatus fitosanitario de la plaga. ABSTRACT Whitefly is the most important pest in the Guaymas-Empalme valley, Sonora. México. The population density of whitefly was evaluated trough regional capture of whitefly adults through yellow sticky traps. The data indicate slope values of 0.011, 0.014, 0.0045 and 0.0027 for 2011-12 , 2012-13, 2013-14 and 2014-15 cycles, respectively; these values are statistically different from each other (0.01) test “t”. Moreover, the average number of individuals caught weekly was 0.67, 0.80, 0.31 and 0.14. Finally, the number of generations which in theory can be accumulated by heat units was 13.5, 9.36, 15.32, 11.96. The results did not detect evidence of the influence of temperature and crops on the population growth of the pest; on the other hand the management of outbreaks of pest infestation and crop dates control are crucial for defining the pest status.
ALGAS MARINAS COMO FUENTE DE COMPUESTOS BIOACTIVOS EN BENEFICIO DE LA SALUD HUMANA: UN ARTÍCULO DE REVISIÓN/ SEAWEEDS AS SOURCES OF BIOACTIVE COMPOUNDS IN THE BENEFIT OF HUMAN HEALTH: A REVIEW
Authors: Gutiérrez Cuesta Richard , González García Kethia L. , Valdés Iglesias Olga del R. , Hernández Rivera, Yasnay , Acosta Suárez Yulexi
Published: April 2020

Las algas han sido utilizadas desde tiempos remotos como alimento principalmente por países asiáticos. Son usadas en la actualidad en muchos otros países como fertilizantes, biocombustibles, fuentes de hidrocoloides entre otras aplicaciones. Su alto contenido de proteínas, lípidos poliinsaturados, fibra dietética, vitaminas y minerales las hacen una fuente atractiva de alimentos funcionales. También poseen sustancias con valor nutracéutico, como los compuestos fenólicos y las clorofilas. En Cuba se evidencia la existencia de ellas en la plataforma insular incluidas las zonas costeras y las bahías. Sin embargo, hasta el presente no existen suplementos nutricionales ni productos farmacéuticos en el mercado nacional elaborados a partir de las macroalgas. La calidad nutritiva de algas marinas junto al alto contenido de compuestos bioactivos con propiedades beneficiosas para la salud, constituyen dos razones importantes para fundamentar su consumo. Además, las algas poseen en su composición, polisacáridos que permiten su incorporación en alimentos cárnicos y en pastas, manteniendo o mejorando su calidad sensorial, nutritiva y saludable. ABSTRACTSince ancient times, algae have been used as a food source fundamentally by Asian countries. They are employed in our times as fertilizer, biogas, in hydrocolloids’ industry and others. Its composition in high quality proteins, polyunsatured lipids, dietary fiber, vitamins and minerals are determinants to declare algae as an attractive functional food. Furthermore, algae have nutraceutical substances, including phenols and chlorophylls. In Cuba, they are present in all Cuban seashore and harbors. However, no macroalgae’s nutritional supplements or pharmaceutic products in the Cuban market exist. The nutritional quality of seaweed alongside the high content of bioactive compounds with beneficial health properties, constitute two important reasons to increase consumption. Moreover, algae have in their composition protein structures that allows its incorporation into of meat and pasta foods, maintaining or improving their sensory, nutritious and healthy quality.
ABONOS ORGÁNICOS Y SU EFECTO EN EL CRECIMIENTO Y DESARROLLO DE LA COL (Brassica oleracea L)/ ORGANIC FERTILIZERS AND THEIR EFFECT ON GRAIN GROWTH AND DEVELOPMENT OF CABBAGE (Brassica oleracea L.)
Authors: Reyes Pérez Juan José , Luna Murillo Ricardo Augusto , Reyes Bermeo Mariana del Rocío , Suárez Fernández Geovanny , Ulloa Méndez Carmen Isabel , Rivero Herrada Marisol , Cabrera Bravo Daniel Antonio , Alvarado Mendoza Alex Fabrizzio , González Rodríguez Jhonn Christopher
Published: April 2020

Los abonos orgánicos constituyen una de las alternativas en el grupo de productos utilizados en la agricultura sustentable, fundamentalmente aquellos que se obtienen a partir de fuentes orgánicas de carácter reciclables como la composta y la vermicomposta. El objetivo del presente estudio fue determinar el efecto de abonos orgánicos en el crecimiento y desarrollo de plantas de col verde. Los tratamientos aplicados fueron vermicomposta, Jacinto de agua, y la combinación 50% vermicomposta y 50% Jacinto de agua y un control, mediante un diseño completamente al azar con cuatro repeticiones. Las variables evaluadas fueron altura de la planta, número de hojas, largo de hojas, ancho de hojas, peso y circunferencia del repollo. Los resultados mostraron que el uso de Jacinto de agua en plantas de col verde estimuló las variables altura de la planta con 23.80 cm, número de hojas con 11.16, largo de hojas con 21.06 cm, ancho de hojas con 17.43 cm y el pesó y circunferencia del repollo con 388.86 55.53 cm respectivamente, sin diferir de la vermicomposta y la mezcla entre ambos. ABSTRACTOrganic fertilizers are one of the alternatives in the group of products used in sustainable agriculture, primarily that which is obtained from organic sources of recyclable nature as compost and vermicompost. The aim of this study was to determine the effect of organic fertilizers on the growth and development of plants of green cabbage. The treatments applied were vermicompost, water hyacinth, and the combination 50% vermicompost and 50% water hyacinth control through a completely randomized design with four replications. The evaluated variables were plant height, leaf number, leaf length, leaf width, weight and circumference of cabbage. The results showed that the use of water hyacinth plants stimulated variables green cabbage plant height with 23.80 cm, number of sheets 11.16, along with 21.06 cm sheets, sheet width 17.43 cm and weight and girth cabbage  with 55.53 g 388.86 cm respectively, without differ from the vermicompost and the mixture between them.
LA ACUICULTURA Y SU IMPACTO EN LA ZONA COSTERA DEL GOLFO DE CALIFORNIA/ THE AQUACULTURE AND THEIR IMPACT IN THE COASTAL ZONE OF THE GULF OF CALIFORNIA
Authors: Del Río Salas Martha , Martínez Durazo Angel , Martín Enrique Jara Marini
Published: April 2020

La zona costera del Noroeste de México cuenta con una gran cantidad de lagunas costeras, con características y condiciones favorables para el desarrollo de la industria de la acuacultura. Actualmente, el cultivo de camarón es una de las industrias con mayor crecimiento en el mundo. Esta industria ha tenido un crecimiento acelerado en Norte y Sudamérica, y particularmente en México en el Golfo de California. En 2010, 70.3% de la producción acuícola de México provino del litoral del Golfo de California, de la cual 97.7% fue de granjas de camarón. Sin embargo, se han documentado diversos efectos adversos de la acuacultura: conflicto con otras actividades económicas (por ejemplo agricultura, pesquerías y turismo), el cambio de uso de suelo, la deforestación de manglares y diferentes tipos de contaminación (principalmente asociada a la descarga y filtración de materia orgánica). Los isótopos estables de C y N son una valiosa herramienta para detectar los posibles impactos de la acuacultura en los ecosistemas, ya que ayudan a determinar la dinámica de la materia orgánica descargada y/o filtrada a los ecosistemas marinos. Estos estudios permiten evaluar y planear el desarrollo sustentable de la acuacultura. Este enfoque se relaciona con el uso de los fundamentos de la eco-tecnología, los cuales buscan la auto-regulación y el auto-mantenimiento de los ecosistemas, causando alteraciones ecológicas mínimas. ABSTRACTThe coastal zone of Northwest of Mexico has many coastal lagoons with characteristics and conditions for the development of aquaculture industry. Actually, shrimp aquaculture is one of the industries with the major development in the world. This industry has had an accelerate growth in North and South America, and in México, particularly around the Gulf of California. In 2010, around 70.3% of the aquaculture production came from the Gulf of California littoral, and 97.7% of this total was from shrimp farms. However, there are documented many adverse effects associated to aquaculture: conflicts with other activities (e.g. agriculture, fisheries and tourism), change of use of land, mangrove deforestation and different types of pollution (mainly associated to discharge and filtration of residual organic matter). The stable isotopes of C and N areis a valuable tool in studies to detect the possible impacts of aquaculture on ecosystems, because help to determine the dynamic of organic matter discharged and/or filtered to marine environments. These studies allow evaluate and plan the sustainable development of aquaculture. This approach is related to eco-technology fundaments which seeks auto-regulation and auto-maintenance of ecosystems, causing minimal ecological disruption.
EVALUACIÓN TÉCNICO-ECONÓMICA DEL POTENCIAL DE DESARROLLO DE PARQUES EÓLICOS EN MAR: EL CASO DEL GOLFO DE CALIFORNIA
Authors: Magar Vanesa , González-García Liliana , Gross Markus S.
Published: April 2020

En este trabajo se presenta un esquema de decisión espacial para la implementación de parques eólicos offshore en la parte central y norte del Golfo de California, con el fin de promover el desarrollo sustentable de estos proyectos. A través de sistemas de información geográfica (SIG), se hace un análisis a escala regional, en los que se combina información espacial relacionada con potencial eólico, sistemas de recursos naturales, y actividades humanas. De este modo, sepropone un esquema de evaluación de potencial de desarrollo según diferentes prioridades, y se hacen recomendaciones para la implementación de parques eólicos offshore según el potencial eólico y restricciones debidas a sistemas de recursos naturales, y actividades humanas. Palabras clave: parques eólicos en Mar, planeación espacial marina, potencial de desarrollo, Golfo de California.
INFLUENCIA DE SISTEMAS CONSTRUCTIVOS EN SELECCIÓN DE VIVIENDA CLASE MEDIA
Authors: Olivarria Mosri Danna Tahany , Alpuche Cruz María Guadalupe , Mercado Maldonado Laura
Published: April 2020

De acuerdo al balance nacional de energía del año 2014 (SENER, 2014), el 30% del consumo energético total por parte del rubro residencial en México, correspondía al consumo de energía eléctrica. Según estadísticas del INEGI, en México, el 42.4% de los hogares a nivel urbano corresponden a hogares de clase media (INEGI, 2010). Se realiza una investigación sobre los fraccionamientos de clase media en la ciudad de Hermosillo, Sonora y posteriormente se reportan resultados de un estudio acerca de la influencia que tiene en la toma de decisiones para la adquisición de vivienda en los usuarios, la selección de los materiales utilizados en la construcción de viviendas, asimismo, del conocimiento que se tiene de la importancia de estos sistemas constructivos en su contribución para hacerla sustentable y sobre el gasto energético de la misma. Únicamente el 18% del grupo encuestado consideró el sistema constructivo de la vivienda como principal motivo de compra.
AHORRO ENERGÉTICO EN EDIFICACIONES CON AIRE ACONDICIONADO
Authors: Ayala-Moreno Alma Angelina
Published: April 2020

El presente documento muestra resultados de una investigación sobre la percepción del confort térmico. Se trata de un estudio de caso en los edificios del campus central de la Universidad de Sonora, en la ciudad de Hermosillo, ubicada en una región de clima cálido seco. La investigación consistió en un estudio de campo para conocer las preferencias térmicas de las personas aclimatadas al clima local y al uso de edificaciones climatizadas artificialmente. El estudio arrojó resultados que muestran el potencial de ahorro de energía, puesto que la temperatura neutral (o de confort) obtenida fue de 26.9°C, y la temperatura media registrada de los termostatos al interior de los edificios fue de 22.3°C, es decir, 4.6°C por debajo de la temperatura neutral. Esto muestra que realizando los ajustes correspondientes en las temperaturas operativas de los sistemas de climatización artificial en base a los datos de percepción específicos para cada tipo de población y clima, puede lograrse un considerable ahorro de energía.
FABRICACIÓN DE PELÍCULAS DE PEROVSKITA (CH3NH3PbI3-XClX) POR DROP CASTING
Authors: Cota Leal Marcos Alan , Sotelo Lerma Merida , Quevedo López Manuel
Published: April 2020

Las perovskitas de haluro de alquilamonio híbridas, han sido estudiadas en los últimos años. Principalmente, los plumbatos de trihalogenuro de alquilamonio (por ejemplo, CH3NH3PbI3), por sus excelentes propiedades como un semiconductor con el transporte de carga ambipolar, la absorción del espectro a (400-800 nm) intervalo de banda ajustable y gran longitud de difusión. Las Perovskitas han tenido un gran éxito en el campo de las celdas solares, donde han alcanzado un alto grado de eficiencia (20.1%) y dispositivo de bajo costo. Sin embargo, la perovskita es muy sensible a la humedad que provoca la degradación. En este trabajo se presenta una ruta para la síntesis de películas de perovskita (CH3NH3PbI3-xClx) enfocada en un proceso de bajo costo. Para la fabricación de las películas se utiliza el método de drop casting, partiendo de una solución de yoduro de plomo (PbI2) y cloruro de metilamonio (CH3NH3Cl), el depósito de las películas se lleva acabo a 160°C y adicionalmente se da un tratamiento térmico a las mismas. Las películas de perovskita obtenidas se caracterizaron por microscopía electrónica de barrido, difracción de rayos X, UV Vis.
ALGORITMOS GENÉTICOS EN EL ESTUDIO DE LÍQUIDOS IÓNICOS PARA ENFRIAMIENTO SOLAR
Authors: Castro García Yair , Cabanillas López Rafael Enrique , García Sánchez Josefa
Published: April 2020

Se conjugó el modelo PC-SAFT y la Teoría de Fricción (PC-SAFT+f-theory) a través de las presiones atractiva y repulsiva moleculares para modelar el comportamiento de fases densimétrico y viscosimétrico de los compuestos puros 2,2,2-trifluoroetanol (TFE) que actúa como refrigerante y el líquido iónico 1-butil-3-metilimidazolio hexafluorofosfato [C1C4im][PF6] como absorbente. El conjunto de parámetros del modelo PC-SAFT+f-theory se optimizó usando algoritmos genéticos. Se comparó la densidad calculada con datos experimentales y se estudiaron los coeficientes de fricción en la viscosidad. Los resultados muestran que los Algoritmos Genéticos son métodos potentes para la optimización del conjuntos de parámetros del modelo PC-SAFT + Teoría de fricción permitiendo la correlación/predicción del equilibrio de fases y del comportamiento volumétrico de fluidos de trabajo en sistemas de enfriamiento por absorción activados con energía solar.
PREDICCIÓN DE TEMPERATURAS PARA USO EN VENTILACIÓN PASIVA
Authors: Ayala-Moreno Juan Pedro , Marincic-Lovriha Irene
Published: April 2020

El objetivo de la investigación fue crear un modelo matemático de predicción para el control de los sistemas de ventilación pasiva en clima cálido seco. La propuesta consiste en utilizar la ventilación pasiva como sistema de enfriamiento en épocas de transición, es decir, en épocas cálidas pero que las temperaturas no son tan elevadas. El propósito es acortar el periodo de utilización de aire acondicionado con el fin de ahorrar energía. El modelo matemático se enfoca en la predicción de las temperaturas interiores en base a las temperaturas exteriores. Este modelo se desarrolló a partir de la caracterización, por medio de mediciones, del comportamiento térmico de la vivienda estudiada y de las características del clima local. Mediante correlación lineal y múltiple se desarrollaron fórmulas para predecir la temperatura interior con base en las variables más significativas del exterior. Se encontró que, para predecir la temperatura interior de las primeras 15 horas, es conveniente usar la temperatura promedio exterior del día anterior; para las horas restantes es conveniente usar la temperatura promedio exterior del mismo día.
Salicornia bigelovii (TORR.): UN SISTEMA MODELO PARA INCORPORARSE COMO CULTIVO AGRÍCOLA EN ZONAS ÁRIDO-DESÉRTICOS
Authors: Beltrán Burboa Cruz Enrique , Arce María Elena , Bianciotto Oscar , López Ahumada Guadalupe Amanda , Vargas Juan Manuel , Hernández-Montiel Luis Guillermo , Reyes-Pérez Juan José , Nieto-Garibay Alejandra , Ruiz-Espinoza Francisco Higinio , Ayala Alvarez Félix , Rodolfo Cisneros Almazán Rodolfo , Wong Corral Francisco Javier , Borboa Flores Jesús , Rueda-Puente Edgar O.
Published: April 2020

Se define como reconversión de cultivos al cambio de producto o actividad que representa mayor rentabilidad económica y viabilidad social para el productor agrícola, al mismo tiempo que da un mejor uso del suelo, mejora la fertilidad del mismo y rompe con el ciclo biológico de plagas y enfermedades. En las zonas árido-desérticas, donde se produce el 70% de los alimentos agrícolas a nivel mundial, entre los factores adversos de tipo abiótico, se destaca el de la salinidad, el cual se agudiza conforme pasa el tiempo, mermando la producción de los cultivos convencionales. En este tipo de ambientes árido-salinos, las especies vegetales nativas son halotolerantes tolerando salinidades que varían de 2 a 55 g/L de agua. Algunas especies presentan tener una importancia agroindustrial como lo es la halófita Salicornia bigelovii, la cual puede ser utilizada para forraje, alimento humano, productos cosmetológicos, producción de biocombustibles, comprimidos a base de biomasa seca para la creación de escritorios, libreros, entre otros. La producción de Salicornia, demanda aguas salobres o agua de mar, la cual es un recurso que puede ser extraído de los litorales costeros o bien de tierras firmes continentales. El escalamiento de su producción depende de por tanto de la intensificación de nuestro conocimiento sobre diversos aspectos de su biología, fisiología, bioquímica e interacción con microorganismos benéficos que contribuyan a un mejor desarrollo y mejorada productividad de este recurso, sin alterar el medio ambiente
EFECTO DE LA APLICACIÓN DE ESTIÉRCOL SIN COMPOSTAR Y FUNGICIDAS PARA EL CONTROL DEL HONGO (Pyrenochaeta terrestris) EN CEBOLLA
Authors: Macías Duarte Rubén , Grijalva Contreras Raúl Leonel , Robles Contreras Fabian , López Cravajal Arturo , Núñez Ramírez Fidel
Published: April 2020

El objetivo del presente trabajo fue evaluar el efecto de la aplicación de fungicidas químicos y biológicos en combinación con estiércol de bovino sin compostar sobre el control del hongo Pyrenochaeta terrestris causante de la pudrición rosada en la raíz del cultivo de la cebolla. El experimento se desarrolló en Magdalena de Kino, Sonora durante el año 2012. El diseño utilizado fue un factorial de 2x7, donde el primer factor fueron dos dosis de estiércol y el  siete fungicidas. Los resultados obtenidos indicaron diferencias estadísticas en el porcentaje de incidencia y severidad del ataque del hongo, así como en altura de planta, peso de bulbo y rendimiento entre niveles de estiércol, fungicidas y en la combinación de ambos. La incidencia y la severidad del ataque del hongo se incrementaron 14% y 3% respectivamente con la aplicación de estiércol en relación al testigo. El tratamiento con Trichoderma harzianum presentó el menor grado de severidad, mayor altura de planta, peso de bulbo y rendimiento con 18%, 79 cm, 233 g y 84.3 t ha-1 respectivamente. En la combinación de estiércol-fungicida, los tratamientos que obtuvieron los mayores rendimientos fueron los aplicados con Trichoderma harzianum con y sin estiércol con 84.7 y 82.0 t ha-1.
CONTAMINACIÓN POTENCIAL POR BIOSÓLIDOS DEPOSITADOS EN UN CAMPO DEPORTIVO
Authors: Alvarado Ibarra Juana , Aguilar Gastelum Ileem , Nubes Ortiz Gerardina , Velázquez Contreras Luis Eduardo
Published: April 2020

Se presentan los resultados de los análisis microbiológico, huevos de helminto y químico elemental de los lodos que son depositados en el suelo de un campo deportivo y que provienen de una planta de tratamiento de aguas residuales ubicada en la ciudad de Hermosillo, Sonora. Usando diferentes técnicas se analizaron los parámetros de coliformes totales y fecales, huevos de helmintos y Salmonella spp. También se determinó la composición química elemental a través de un microanálisis por energia dispersiva de rayos x. Se analizó, además, Escherichia coli en muestras de agua obtenidas del final del proceso de tratamiento, usando la técnica de Número Más Probable. Los resultados, según la NOM-004-SEMARNAT-2002, muestran que los indicadores coliformes fecales y Salmonella spp, estan por encima de los límites establecidos, para el indicador de huevos de helmintos se clasifican como tipo B y se encontró cobre por debajo de los límites permisibles. Para el caso de las muestras de agua, en todos los tubos se encontraron valores positivos de Escherichia coli. Se concluye que los lodos no clasifican en ninguna categoría establecida en la normatividad mexicana para su aprovechamiento como mejorador de suelo en uso agrícola o forestal. Aunque antes de su disposición los lodos son estabilizados con cal, el tratamiento no garantiza la inocuidad del biosólido.
ACIDOS HÚMICOS Y SU EFECTO SOBRE VARIABLES MORFOMÉTRICAS EN PLANTAS DE ZANAHORIA (Daucus carota L)
Authors: Reyes Pérez Juan José , Abasolo Pacheco Fernando , Yépez Rosado Ángel Joel , Luna Murillo Ricardo Augusto , Zambrano Burgos Darwin , Vázquez Morán Vicente Francisco , Cabrera Bravo Daniel Antonio , Guzmán Acurio Jenny Alexandra , Torres Rodrígreyesp1981@gmail.comuez Juan Antonio , Rodríguez Mendoza William Oswaldo
Published: April 2020

Las sustancias húmicas tienen profundos efectos físicos, químicos y biológicos sobre el suelo, con un efecto estimulante para el crecimiento de las plantas. Estas sustancias influyen en la movilidad de compuestos orgánicos no iónicos como pesticidas y contaminantes, removiéndolos de las soluciones acuosas. El objetivo del presente estudio fue determinar el efecto de los ácidos húmicos sobre la morfometría de plantas de zanahoria, las cuales se sometieron a la aplicación de ácidos húmicos a 10 mg/L y un tratamiento control. El estudio se desarrolló en una estructura tipo invernadero con sombra del 40%. Se midió la longitud de la raíz, biomasa fresca de la raíz, longitud de las hojas, biomasa fresca de las hojas y diámetro superior. Los resultados mostraron que los ácidos húmicos aplicados favorecieron el desarrollo de las variables morfométricas en plantas de zanahoria con valores de largo de la raíz de 20 cm y biomasa de 102 g, significativamente superiores al tratamiento control. Se discute la respuesta entre las plantas de zanahoria y la aplicación de ácidos húmicos.
PHENOTYPIC CHARACTERIZATION AND MOLECULAR IDENTIFICATION OF A LUMINESCENT MARINE BACTERUM ISOLATED FROM THE NW SHELF OF CUBA
Authors: Delgado Gómez Yolaine , Umaña Castro Rodolfo , Solano González Stefany , Iglesias Rodríguez María V. , Ortiz Guilarte Eudalys , Álvarez Valcárcel Carlos , Lugioyo Gallardo Gladys M.
Published: April 2020

Light emitted by luminescent bacteria is sensitive to several toxic compounds; therefore, some luminous species have been used to evaluate the quality of water environments. In the present study we carried out the phenotypic characterization and molecular identification of a marine luminescent isolate (CBM-784) from the NW Cuban coast. The identification of the CBM-784 luminous isolate was based on phenotypic and genotypic characteristics. Phenotypically, the CBM-784 strain revealed the following characteristics: Gram negative, positive to oxidase and catalase reactions,bioluminescent, and facultative anaerobic respiration. The bacterial strain produces enzymes with gelatinase, lysine carboxylase and amylase activity. Taken together, these assays indicated that CBM-784 showed a high phenotypic similarity to the Vibrio harveyi ATCC 14126 strain. On the basis of 16S rRNA gene sequencing, CBM-784 was closely related to Vibrio harveyi and Vibrio rotiferianus (94% similarity). Sequence analysis of gyrB gene, has shown that CBM-784 shares taxonomic position with Vibrio campbellii and Vibrio harveyi isolates, with 95% of bootstrap value. In addition, sequence analysis of pyrH gene, grouped this isolate to the Vibrio harveyi cluster with a strong bootstrap support (99%). The multilocus sequence analysis and phenotypic characterization of CBM-784 indicated that this strain have a strong relation to Vibrio harveyi.