bluuebunny/crossref_metadata_2025 huggingface dataset:
Review of Works Content Analyzer for Information Leakage Detection and Prevention in Android Smart Devices
Authors: Okebule T. , Adeyemo Oluwaseyi A. , Olatunji K. A. , Awe A. S.
Published: May 2022

The advent of android operating systems introduced tools to keep track of users’ information activities and prevent information leakagewhich bridged the trust between application developers and consumers. A review of related literature shows that several phenomenahad been developed to prevent malicious applications from stealing personal sensitive information from smart phones but there is stillthe need for efficient solutions. This study presents a literature review of works on content Analyzers for information leakage detectionand prevention on android-based devices. The review will help to combine different concept to minimize false positives that will in turnlead to increase in code coverage towards detecting the maximum number of data leaks.
Biodeterioration of the Historical monuments of Doon valley with special reference to Angiosperm diversity
Authors: Bhatnagar Sarita , Sachan S. , Sharma Neelam
Published: May 2022

Angiosperms are one of the most important biodeteriogens that grow on old building of historical and religious importance and cause biophysical and biochemical decay. During these study angiosperms caused biodeterioration to the historical monuments of Doon valley was studied. This study was conducted on two monuments of Doon valley i.e. Darbar Sahib and Tapkeshwar Temple. The study was conducted in various seasons i.e. rainy, winter and summer. A total number of twenty-four angiosperms were collected from Darbar Sahib and thirty-six from Tapkeshwar Temple. Maximum number of genera was collected during rainy season from both the monuments in which genera of Asteraceae, Scrophulariaceae and Poaceae were more common.
Clonal Variation for Loranthus infestation in Teak (Tectona grandis L.f.)
Authors: Gunaga Rajesh , Hanumantha M. , Shahapurmath Girish , Vasudeva R.
Published: May 2022

Dendrophthoe falcata var. pubescens, commonly known as Loranthus is one of the important epiphytic parasites of Teak plantations, which can cause substantial economic losses. It is generally observed that certain clones harbour a higher number of Loranthus than others. However, susceptibility of different Teak clones to Loranthus infestation has not been documented in India. Here we report on the clonal variation for this aspect in one of the Teak clonal seed orchards (CSOs) of Karnataka. All the ramets in the CSO (n=625) were scored for the number of mistletoes on them. A weighted score was developed to assess clonal variation for Loranthus infestation, considering percent ramets infested and the number of mistletoes per individual. Around 37 percent of the ramets in the CSO were infested by at least one parasite, which is akin to the infestation levels among neighboring Teak plantations. However, significant variation for the Loranthus infestation was observed among 24 clones studied. Clones- MySS1 and MySS2 were found to be least infested (i.e. 3.8 and 4.0% ramets), whereas clone- MyHaV2 showed highest Loranthus infestation of 48.1%. Although the influence of origin of clone on the Loranthus infestation was significant, provenancial effect on the trait was weak. Based on the score developed, four clones (viz., MySS1, MySS2, MyHaD2 and MyHaD1) were classified as ‘tolerant’, five clones were under ‘highly susceptible’ (viz., MyHuT4, MyHuT5, MyHuT8, MyHaV4 and MyHaV2) and rest of the 15 clones were ‘susceptible’. None of the clones were absolutely resistant against Loranthus infestation. Perhaps this is the first report on clonal variation for Loranthus infestation in Karnataka. We discuss the plausible reasons for such clonal variation.
Result of cloud seeding experiment at Delhi as assessed by Radar
Authors: CHATERJEE RN , BISWAS KR , RAMANAMURTY BRV
Published: May 2022

Based on measurements made by a high power microwave radar on areal echo coverage and echo height of rain cells within 100 km around Delhi, the result of cloud seeding experiment conducted in the area during the 5 experiment years, 1961 and 1963 to 1966, has been evaluated. The trend of result has been found positive on the basis of areal echo coverage, and negative on the basis of mean echo height. The implication of the suggested trends of result is discussed.
A study of Climatological and other Rainfall Patterns over Central India
Authors: BEDEKAR VC , BANERJEE AK
Published: May 2022

The study is divided into three parts, viz., (a) The normal monthly rainfall charts during monsoon months for Madhya Pradesh and Vidarbha have been presented and the results of the analysis discussed; (b) The spatial distribution of rainfall associated with monsoon depressions moving across Central India has been depicted and a method to forecast the same has been described; and (c) The character of rainfall at different places in and around a low-level convergence zone occurring over the above area has been brought out with the help of self-recording rainguage charts and its usefulness in local forecasting has been indicated.
Variations in radiation, total ozone and illumination during the solar eclipse of 20 May 1966 at New Delhi
Authors: YADAV BR , SINHA SS
Published: May 2022

A study has been made of the variations of solar and atmospheric radiation. total ozone content during the solar eclipse on 20 May 1966 with the help of available instruments at Radiation Laboratory. New Delhi. Variations in the values of the natural illumination derived from measurements of solar radiation on this day have also been studied and discussed.
Warm and Cold Cloud Rain in Calcutta during southwest monsoon season
Authors: ROY AK , MUKHERJEE BK
Published: May 2022

On the oasis of findings, by radar, of heights of tops of rain-giving clouds over Calcutta area during southwest monsoon season, and noting the associated precipitation features in different instances estimates have been made of the relative contributions to the season's rainfall by 'Warm' and 'Cold' clouds. The study has Shown that, although the percentage contribution by warm rain to the season's total rainfall in Calcutta area is higher than that over the more continental region around Delhi, the net yield of rainfall from warm clouds in this area also is quite small.
Moisture content in lower air layers and associated day-to-day rainfall in Gangetic West Bengal during southwest monsoon season
Authors: MUKHERJEE BK
Published: May 2022

A study has been made of large, and often abrupt, changes occurring from one day to another in the moisture content of air at 700-mb level over Gangetic West Bengal, as shown by radiosonde observations at Calcutta. The possibilities of utilizing this feature as an additional helpful criterion for foreshadowing detailed character of rainfall over the area during the monsoon season have been examined, and are discussed in the paper.
Biexponential Model of Radio Refractive Index over India
Authors: SRIVASTAVA HN , PATHAK RB
Published: May 2022

Based on the radiosonde data during 1956-1960 biexponential model of radio refractive index has been derived at12 stations in India for the four representative months recommended by International Radio Consultative Committee (CCIR), viz., February, May, August and November. It is found that the biexponential model of radio refractive index is an excellent representation upto the lowest three kilometers over Madras and Trivandrum and upto 1.5 km at Port Blair. The agreement is fairly good over the inland stations of north and central India at 850-mb level in the representative months except August.
Distribution of SSC sizes at Alibag for the period 1921-1960
Authors: SASTRI NS , JAYAKAR RW
Published: May 2022

Seasonal and annual distributions of frequency of occurrence at Alibag of SSCs of different sizes of the main impulse in H and the distribution of the mean sizes are studied. The bi-hourly mean sizes of SSCs are found to be larger in magnitude on: either side of midnight and lower during the day-time with minimum in the interval 4-6 hr LMT.
Time variations of Alibag K-indices ( 1946-1965)
Authors: YACOB A , RANGARAJAN GK
Published: May 2022

Results of analysis of time variations of Alibag K-indices for the period 1946 to 1965 confirm the occurrence of day-time maximum in summer and night-time maximum in the equinoxes and winter. Average magnitude of K-index at each of the 3-hour intervals, for which K-indices are scaled, depicts semi-annual trend with equinoctial maxima. This semi-annual variation is particularly prominent around midnight. Annual trends in equivalent daily range amplitude, At, for Alibag show clear equinoctial maxima for both IQ and m days of the years 1952-54. No clear semi-annual variation in At is seen during sunspot active periods of 1955-57 and 1958.60. Power spectra of At depicts also rotation periodicities for the years around the sunspot minimum year 1954. This periodicity is much less prominent during the years around sunspot maximum. The observed features are discussed.
Lunar tidal oscillations in horizontal magnetic intensity at Kodaikanal during periods of low and high sunspots
Authors: TRIVEDI NB , RASTOGI RG
Published: May 2022

The paper describes the lunar daily (L) variations at fixed lunar ages and the lunar monthly (M) variations at fixed solar hours in horizontal magnetic intensity (.H) at Kodaikanal for the low sunspot period, Jan, 1951 to Dec, 1955; and for the high sunspot period Jan. 1956 to Dec, 1960. The lunar daily variations at any of the seasons or solar activity epochs are found to follow Chapman's phase law: L=Cn sin [n~+(.n-2)v+an]. With the increase of solar activity the phase of Ls wave remains constant for each of the seasons, but the amplitude increases during D. and E. months and slightly decreases during the months, The lunar semi monthly (.M2) waves at fixed solar hours vary with the solar time in the same way as the electrojet current, i.e., the amplitude starts increasing with sunrise reaches a maximum near noon and decreases to a low value by sunset. The ratio of lunar semidiurnal (LB} wave to the solar semidiurnal (82) wave for any of the seasons decreases with solar activity. The amplitudes of LB or M2 wave at Kodaikanal are much smaller than the corresponding values at Huancayo indicating the longitudinal variation in the lunar daytime effects in H along the magnetic equator. The lunar semimonthly tides for the daytime hours are predominantly under the control of lunar time during the D. months and of lunar age during the J .months.
A study of heavy rainfall occurrence at Santacruz (Bombay) with special reference to supersonic flight operations
Authors: SARMA VVITTAL
Published: May 2022

Heavy rain is one of the meteorological phenomena that poses a problem for the operation of supersonic transport aircraft in subsonic phases of climb and descent. Raindrops in high concentrations and sizes associated with heavy rain effect damage on impact on the forward facing parts of the aircraft moving at high speeds even in, the subsonic range.

 

Santacruz (Bombay) experiences heavy rainfall spells during the southwest. Monsoon period. The frequency of these spells and an analysis of the hyetograms for the period 1954-64 have been carried out. Graphs showing the average hourly rainfall and the diurnal variation on occasions of heavy rain spells are presented. The frequency of spells of heavy rain at two sites when there is a large variation of rainfall or otherwise have been studied with special reference to the upper winds on these situations. It is seen that whenever there is a large variation of rainfall at the two sites, the prevailing westerlies are strong and extend to a deeper layer upto 3 km or more.
Station magnitude corrections for Shillong, Poona and New Delhi
Authors: PADMANABHAMURTY B
Published: May 2022

Station magnitude corrections for WWSSN stations in India have been evaluated and their variations discussed. The probable causes of station corrections were suggested. A preliminary examination of azimuthal distribution of station corrections indicated their variation in different directions.
Solar-cycle periodicity in secular variation of H at Alibag
Authors: YACOB A , SEN AK
Published: May 2022

Quiet-day monthly mean values of H at midday and midnight of Alibag for the period 1906 to 1967 are examined for cyclic variations of sunspot cycle periodicity after elimination of the secular variation by the method of polynomial regression and the technique of numerical filteration. The cyclic component is observed both in the midday and midnight series, with prominent amplitudes from about 1930 to 1955. For most of the solar-cycles during the period of data the component variation is nearly in phase with the sunspot cycle and its amplitude for the midday series is almost twice that for the midnight series. Since the two data series differed only in respect of the magnitude of Sq (H) in them, it is construed that in addition to other causes Sq (H) also contributes to the solar-cycle variation in H.
The influence of Nuclear Explosions on the Weather Pattern of Europe and Northern Asia
Authors: WICKRAMASINGHE GMN
Published: May 2022

There were powerful series of atmospheric nuclear explosions in the Novaya Zemlya region of the Arctic autumn and early winter of 1961; and much more powerful series in the same region during the same seasons in 1962. These have been the most powerful so far.

 

During the above seasons it is noticed that the pressure and circulation pattern of the troposphere and lower stratosphere in Europe and Northern Asia displayed some abnormal features for the time of year during and immediately after each series of nuclear explosions the sea level westerly  circulation was weak with low cyclonic activity; but the high level ,westerly circulation was strong with strong cyclonic activity at high levels and intense anticyclonic activity with blocking at sea level and higher levels, often for long periods. This abnormal atmospheric pattern faded between series of explosions, particularly if there was a long interval between the series.

 

A consequence of this atmospheric pattern has been the development of an extensive  cold polar cell over Northern Eurasia by mid-winter of each year. The very cold northerly and easterly winds emitted by this polar cell opposed the warm sea level westerly circulation and prevented the invasion of temperate latitudes by warm fronts. As a consequence the winters were very cold, and the 1962-63 winter was one of the coldest on record.

 

With the aid of aerologioal charts and available information regarding atmospheric nuclear explosions and their influence on the atmosphere. it has been shown that the series of nuclear explosious played a major role in the evolution of the abnormal atmospheric pattern.
Discussion of the observations of the Oceanographer Discovery off Somalia during August 1964 to explain absence of fog
Authors: DESAI BN
Published: May 2022

Observations of the Occanographor Discovery during 16 to 21 August 1964 presented by Ramage (1968) have been discussed to understand the causes responsible for the absence of fog over the area where the inversion began at the surface inspite of humidity being more than 90 per cent. Topographical features on the two sides of the Gulf of Aden and the south Red Sea and to the west of Somalia coast have to be taken into account as they affect the air flow over the area. Temperatures at the top of the inversion were higher by about 60C at 100N than at 70N because of the differences in the nature of airmasses over the two locations, there being drier air at the former and moist air at the latter location. There is no evidence of massive and persistent subsidence below about 4.0 km in the dry air over the area between 10 to 120N. Absence of fog was due to strong wind conditions; the latter and high humidity would prevent significant cooling due to radiation.
Year to year variations in rainfall totals of Bihar State
Authors: ANANTHAGIRI B
Published: May 2022

The variation of rainfall totals of Bihar Plains and Plateau for Sixty years has been examined for Kharij and Rabi periods using the published monthly rainfall data.

 

Year to year totals of rainfall of Bihar Plains vary more frequently than that of Bihar Plateau.

 

Within a period of twelve years Bihar Plains will have less amount of water than required for irrigation purpose and survival of crop, more times than Bihar Plateau.
Fiscal policy and sectorial performance: Emphasis on the Nigeria insurance sector
Authors: Kama Kenneth C
Published: May 2022

One of the significant measures of economic development is the performance of its individual sectors. The insurance industry being an essential part of the economy’s financial sector with inherent potentials to drive economic expansion deserves government consideration in its fiscal policies. This study aimed at examining the effect of government fiscal policy on the performance of the insurance sector using autoregressive distributive lag (ARDL) model on data from CBN bulletin 2020 and Federal Inland Revenue Service report from 1994 to 2020. The result of the study indicated that total tax revenue has a negative relationship with insurance premium both in the short run and in the long run. While government expenditure has a positive effect on insurance performance in the short run and in the long run. The co-integrating equation also signified that for any movement into disequilibrium is corrected within one period. The study therefore recommend among others that government should utilize its expansionary fiscal policy in a manner that it will create an enabling environment for sectorial development, improve investments and relatively increase the activities of the insurance sector.
FACE MASK DETECTION
Authors: Kataria Pankaj
Published: May 2022

This project intends to develop a Face Mask Detection system using OpenCV, Keras/TensorFlow and Deep Learning. The system can be easily integrated to various embedded devices with limited computational capacity as it uses MobileNetV2 architecture. It will detect face masks in images as well as in real-time videos. In recent times, where Covid-19 has impacted a domino effect on manufacturing, travel, tourism, hospitality, crippling the global economy. In addition to it, is the growing curve of human deaths across the globe due to the pandemic, this project which relies on computer vision and deep learning, intends to make an impact and solve the real-world problem of safety measures at some significant level. This project can be used at airports, offices, hospitals and many more public places to ensure that the safety standards are maintained and people are abiding by the rules and regulations to wear protective masks at public places. If the detection system classifies as ‘No Mask’, reminders can be given as well as actions can be taken against such individuals.
A Narrative Review of Physical Activity and Exercise during Pregnancy: Nurse’s Role
Authors: Klankhajhon Sirikanok , Sthien Anonthasha
Published: May 2022

Obesity is an important global health issues in pregnancy that impact on pregnant women and newborn such as gestational diabetes mellitus, and cardiovascular diseases. The scoping review six stages is used to review an exercise during pregnancy, which is associated to potential maternal and newborn’s physical, psychological and social health aspects both short and long terms. The prescription of exercise during pregnancy for low risk pregnant women without any contraindications should take moderate level of exercise at least 3 times a week, at least 30 minutes or more of accumulated exercise a day, which include a 5-10 minutes warm up and cool down period, 20-30 minutes exercise from protocol: muscular workouts and/or cardiovascular training. Pregnant women should exercise as muscular workouts and cardiovascular training and unsafe activities should be avoided. Nurses’ role support pregnant women to enhance knowledge of exercise and increase exercise behaviour during pregnancy through nursing process at antenatal care clinic.
Design and Implementation of Piezoelectric Tiles on Pavements and Asphalt Roads
Authors: anesh. R Sri , G Yogalakshmi. , A Deepak Antony. , G Madhusudanan.
Published: May 2022

The paper aims to design a piezoelectric harvester which is capable of harvesting electrical energy in response to the applied mechanical stress. In this contemporary world, the piezoelectric energy is one of the primary form of energy source and it is also one of the renewable energy source which can be harvested easily by means of converting mechanical stress into electrical energy. In this paper, a model of piezoelectric tile which consists of piezoelectric transducers and this can be implanted under the pavements and underneath the asphalt roads to convert those mechanical stresses created by foot steps and moving of vehicle tyres into electrical energy is proposed. By implanting those piezoelectric tiles on the pavements and asphalt roads , It converts those mechanical vibrations created by the moving vehicle into the useful form of the energy and also the aim of sustainable development is achieved.
Nurses’ Self-Efficacy Regarding Cardiopulmonary Resuscitation: A Literature Review
Authors: Alamri Ayman Ateq , Baker Omar Ghazi
Published: May 2022

Early detection and effective resuscitation response are critical to the survival of cardiac arrest patients. Nursing staff are frequently the initial responders to cardiac arrest patients. The level of self-efficacy lessens the anxiety of new nursing graduates and enhances their ability to do cardiopulmonary resuscitation (CPR). This paper aimed to investigate the relationship between self-efficacy and nurses’ abilities regarding CPR. Self-efficacy refers to “beliefs in one’s capacity to arrange and execute the courses of action required to achieve specific attainments”. Two main categories discussed in this study include self-efficacy of nurses about CPR and factors affecting their self-efficacy. As a result, nurses must have the essential knowledge and attitude, and trust in their self-efficacy to provide adequate nursing care to cardiac patients. Furthermore, nurses need to be prepared regarding CPR’s knowledge and self-efficacy before delivering it, since these are crucial aspects that affect CPR delivery.
Research Career Intentions Among Non-Native English-Speaking Graduate and Postdoctoral Trainees in STEM—Results from Cross-Sectional and Longitudinal Studies
Authors: Lee Hwa Young , Chang Shine , Anderson Cheryl B. , Dahlstrom Erin K. , Cameron Carrie
Published: May 2022

International graduate trainees, many of whom are non-native English-speaking (L2) trainees, comprise more than half of graduate-level trainees in STEM, but little is known regarding factors that influence their career intentions, especially those that foster their growth as scientists to achieve their full potential in research. Thus, the purpose of our studies was to examine the relationship between L2 status and contextual factors that help shape the learning experiences and plans for research-focused careers. Study 1 collected cross-sectional survey data from doctoral and postdoctoral trainees (N=510) from research institutes in the Texas Medical Center in Houston. We examined which factors were associated with research career intentions using multiple linear regression analysis. Study 2 collected longitudinal data from doctoral and postdoctoral trainees (N=185) from 71 institutions in 33 states in the U.S. Repeated measures of career intentions were evaluated using mixed-effect modeling, and cross-tabulation analysis evaluated job-seeking behaviors by language status. Results showed that L2 trainees had stronger intentions to pursue research careers than did native English-speaking trainees (L1), controlling for other variables. Mentoring, trainee self-efficacy, and the perception of working more than mentors expected influenced each career intention differently. In Study 2, career intentions did not change over time for L2 or L1 trainees, but L2s preferred working in higher education or research institutes more than L1s. L2s, however, were more likely to be in early stages of seeking jobs compared to L1s. These findings provide implications for research mentors, advisors, and academic administrators in facilitating L2 career advancement and success.
Sleep Quality among Healthcare Professionals in a Tertiary Care Hospital
Authors: Ravi Abinaya , Sivapriya KRS  , George Neethu , Britto Rock , Parthiban Anirudh , Anukruthi Nagarajan
Published: May 2022

Introduction: A person spends one third life in sleep, so the quality and quantity of sleep is of utmost importance. Health Care Professionals (HCPs) are more prone to inconsistency in sleep both in quality and quantity, which leads to deflection from health and well-being of themselves and care of others. This study aims to assess the various factors influencing sleep quality and daytime sleepiness among medical and nursing healthcare professionals. Methodology: A cross sectional study was conducted using a structured questionnaire to collect socio-demographic and work-related information, co-morbidity and quality of Sleep using ESS (Epworth Sleepiness Scale) and PSQI (Pittsburgh Sleep Quality Index) scale. Results: Among the 150 HCPs, 64.7% were medical and 35.3% were nursing professionals. 53.6% of medical and 66% of nursing professionals reported poor sleep quality. Increased coffee consumption influences sleep quality and it was found to be statistically significant. Nursing professionals had more excessive daytime sleepiness (58.5%) with significant p-value (p=0.01). Conclusion: According to our study results, sleep quality was poor among nursing professionals which highlights the need for measures to improve their quality of sleep.
Evaluation of Clinico-Demographic Profile and Survival Rate among Patients of Head and Neck Cancer
Authors: Shah Anand , Patel Ravi , Pandya Shashank , Solanki Jayesh , Ravani Vaishali
Published: May 2022

Background: Head and Neck cancer (HNC) is a recognized major public health concern all over the worldObjectives: To study age and gender predilection and clinical profile of Head & Neck CancersMaterials and Methods: This was a retrospective study including 21121 patients with Head & Neck Cancer presented to tertiary care centre, Ahmadabad. Patients' details of age, sex, site of carcinoma, stage at presentation and Outcome were recorded. The data was analyzed using MS office excel 2010 and Epi info software version 7.0.Result: Male to female ratio was 4.8:1. The most common site of presentation of tumour was in cheek mucosa (29.01 %). On comparison of different anatomical sites, majority of patients were presented in locally advanced stage. Significant association (p<0.05) was found between presentation of disease and literacy status. Overall 5 - year survival rate was 60.5% ± 1.6% when disease was localized.Conclusion: Majority of patients diagnosed in locally advanced stage. Strategies for the early diagnosis and prevention of Head & Neck cancer must be undertaken by government to overcome this situation.
Meningkatkan Hasil Belajar IPS tentang Kenampakan Alam Negara Tetangga Indonesia Menggunakan Pembelajaran Kooperatif Permainan Kartu Kelas VI Sdn Sungai Pinang Hulu Sungai Utara
Authors: Mahdalina
Published: May 2022

Penelitian ini dilakukan di SDN Sungai Pinang. Salah satu upaya meningkatkan hasil belajar dapat dilakukan dengan pembelajaran kooperatif Permainan Kartu. Strategi ini pun dapat digunakan pada pembelajaran mata pelajaran IPS untuk siswa kelas VI mengenai Kenampakan Alam Negara Tetangga Indonesia Permasalahan yang terlihat selama ini yakni siswa kurang aktif  atau pasif dalam proses pembelajaran disebabkan guru belum menggunakan model yang tepat guru kurang dapat merencanakan kegiatan pembelajaran yang menyenangkan bagi siswa. Metodologi yang digunakan adalah pendekatan Penelitian Tindakan Kelas (PTK) yang dilaksanakan dalam dua siklus empat kali pertemuan. Adapun setting penelitian adalah siswa kelas VI SDIT Ihsanul Amal kabupaten Hulu Sungai Utara tahun ajaran 2018/2019, dengan jumlah siswa 30 orang yaitu terdiri dari 14 siswa laki-laki dan 16 siswa perempuan. Jenis data yang diperoleh dalam penelitian ini adalah data kuantitatif dan kualitatif. Data kuantitatif diperoleh melalui teknik pengukuran dengan tes tertulis secara individu maupun kelompok, sedangkan data kualitatif diperoleh melalui instrumen penelitian berupa lembar observasi. Analisis data yang digunakan  diinterpretasikan berdasarkan perhitungan distribusi frekuensi dengan pembahasan berdasarkan skala persentasi dan indikator ketuntasan belajar yang ditetapkan. Hasil penelitian dapat membuktikan bahwa penerapan pembelajaran kooperatif tipe TGT dapat meningkatkan hasil belajar materi koperasi dalam perikonomian Indonesia . Dengan ketuntasan klasikal siklus I 69,23% dan rata – rata 73,84, meningkat pada siklus II dengan ketuntasan klasikal 92,31% dan rata – ratanya 82,69. Pembelajaran ini juga dapat meningkatkan aktivitas guru dan siswa.
Aislamiento y selección de rizobacterias solubilizadoras de fósforo a partir de cultivos de Theobroma cacao L.
Authors: Alvarado lbáñez Juan Carlos , Gutiérrez Araujo Mayra Karina
Published: May 2022

La agricultura intensiva promueve el uso desmedido de fertilizantes químicos que ocasionan la inmovilización de nutrientes en el suelo, optando como alternativa de solución el empleo de fertilizantes a base de microorganismos. Este trabajo de investigación tuvo como objetivo aislar y seleccionar bacterias nativas con capacidad solubilizadora de fósforo a partir de muestras de suelo rizósférico de Theobroma cacao colectadas en las provincias de Bagua y Utcubamba de la región Amazonas. Las 23 muestras de suelo procesadas presentaron textura franco-limosa principalmente, y pH variable entre 6.24 y 7.75, de las cuales se aisló 42 cultivos de rizobacterias provenientes de los sectores Bagua, Vista Hermosa, Los Olivos, Santa Teresa, El Vivero, La Peca y Cajaruro de las provincias de Bagua y Utcubamba. Se realizó el aislamiento primario en medio de cultivo no selectivo y la selección secundaria en medio Pikovskaya, observándose halos de solubilización del fosfato tricálcico; al mismo tiempo se realizó la caracterización macro y microscópica de las colonias aisladas con capacidad solubilizadora. Se midieron los Índices de Solubilización (IS) en placa de cada cultivo puro aislado, seleccionándose dos cultivos super solubilizadores con IS> 3. Se concluye que a partir de la rizósfera de Theobroma cacao se logró aislar varios cultivos puros de bacterias solubilizadoras de fósforo, seleccionándosedos de ellas como super solubilizadoras, las cuales fueron conservadas en medio de cultivo adicionado con glicerol para su posterior identificación.
Uso de aceite esencial de Tagetes minuta L. como conservante de carne de cuy
Authors: Culqui Arce Carlos Alexánder
Published: May 2022

Los aceites esenciales son compuestos volátiles extraídos de plantas con gran importancia en la industria farmacéutica, alimentaria y en la perfumería. La investigación tuvo como objetivo evaluar el tiempo de vida útil de carne de cuy empacado al vacío utilizando aceite esencial de Tagetes minuta L. (AETm). Se empleó un diseño experimental de estímulo creciente, en el que se aplicó tres dosis de solución acuosa de AE (0,25, 0,30 y 0,35% v/v), con cuatro réplicas y se realizó seis evaluaciones en25 días (O; 3; 6; 14; 18 y25) de almacenamiento a3ºC. La vida útil fue determinada mediante la carga microbiana (Escherichia coli y Staphylococus aureus) en el tiempo, oxidación de las grasas y el pH en 26 g de carne de cuy. Para determinar el contenido microbiano se empleó la técnica del número más probable (NMP) y el la oxidación lipídica se determinó por Rancimat como tiempo de inducción. A los 14 días, todas las muestras, mantuvieron sus características para ser consumida; además se observó que para la inhibición de E. coli ninguna de las concentraciones tuvo diferencia alguna sin embargo para S. aureus la concentración de 0,35% tubo mayor efecto inhibidor. Por lo que se concluye que el AETm puedeprolongar el tiempo de vida útil de carne de cuy empacada al vacío hasta por 14 días.
Propuestas interculturales para la enseñanza universitaria de la física basado en el saber ancestral awajún
Authors: Estela Urbina Ronald Omar , Contreras Barsallo Elisa
Published: May 2022

En la Universidad Nacional Intercultural “Fabiola Salazar Leguía” de Bagua la población estudiantil está constituida por el 50% de  estudiantes provenientes de comunidades nativas amazónicas, en su mayoría son Awajún y en menor proporción Wampis; y el otro 50% son mestizos. Los planes de estudio de las carreras profesionales de Ingeniería Civil y Biotecnología contemplan en su estructura curricular básica el curso de física, siendo este de mayor dificultad para el aprendizaje de los estudiantes, tal como se evidencia en los registros académicos de  los ciclos 2018-I y 2019-I. El objetivo del trabajo fue formular dos propuestas didácticas interculturales para el aprendizaje de la física en la educación superior universitaria, la primera es la Etnofísica Awajún, que consiste en una mirada al conocimiento común (saber ancestral) de la mano de la Física,   mediante relatos vividos por los mismos estudiantes sobre sus  experiencias,  constituyen  un cuaderno de trabajo donde se identifica el saber ancestral, así como su conocimiento sistematizado de la física correspondiente, en un ambiente intercultural de  socialización entre las culturas Awajún y mestiza que se evidencian en el ambiente universitario; la segunda propuesta es propedéutica, es el  Aprendizaje Basado en Cuentos, consistente  en experiencias y ficciones del estudiante con el propósito de ligarlo a las disciplinas de la física de las carreras antes mencionadas, a fin de identificar y caracterizar un fenómeno físico de manera intercultural. Las dos propuestas didácticas permitirán mejorar el aprendizaje de la física en estudiantes de la UNIFSL-B procedentes de comunidades originarias de la región Amazonas. Perú.
Características fisicoquímicas y microbiológicas de carne bovina ofertada en la región amazonas
Authors: Pinedo Orlando , Olivares S.Victor , Rojas Diorman
Published: May 2022

El objetivo de la investigación fue evaluar las características fisicoquímicas y microbiologías de la carne bovina ofertada en la región Amazonas, para lo cual se recolectaron en el beneficio 6 muestras con 3 repeticiones y en la comercialización 35 muestras con 2 repeticiones. Se realizó la descripción y evaluación de características de cada muestra; determinándose que la carne cumple con parámetros de pH establecidos en la NTP 201.055(5,50 a 6,44), asimismo presenta en promedio 75,53% de humedad; 17,79 % de proteína; 17,11 % de grasa; y 5819,28 cal/g de energía; en el beneficiado el 66,67 % de las provincias cumplieron con los requisitos de pH, un promedio de 83,3 % de humedad; 17,79 % de proteína; 4,98 % de grasa y un promedio de 5812,79 cal/g. La descripción y evaluación microbiológica indica existió presencia de enterobacterias en el 100% de las muestras, un recuento máximo de 1100 y 860 NMP/g para coliformes totales y fecales respectivamente; presencia de Salmonella Spp en el 62 % y Shiguella Sp en el 39%. Asimismo, en el centro de beneficio, un recuento máximo de 1100 NMP/g para coliformes totales y fecales, presencia de Salmonella Spp (94 %) y Shiguella Sp (28 %). Sin embargo, se determinó recuentos máximos de 65×104 UFC/g y 92×104 UFC/g para cada etapa y cumplen con las normas.
Niveles de radiación solar ultravioleta en el campus universitario de la Universidad Nacional Intercultural Fabiola Salazar Leguía de Bagua, 2019
Authors: Santamaría Baldera Nemesio
Published: May 2022

La ciudad de Bagua, se ubica en la parte norte del Perú situada en una plataforma natural a la orilla derecha del río Utcubamba; a 400 msnm, con temperatura promedio de 32 °C, lugar donde se encuentra ubicada la ciudad universitaria de la UNIFSLB. Con el objetivo de medir la radiación UV se instaló una miniestación de marca RIKA Electronic Technology Co., Ltd, modelo RK900-05, en el campus de la Universidad Nacional Intercultural Fabiola Salazar Leguía de Bagua, para el registro de los datos durante el periodo marzo-noviembre de 2019. Los datos fueron sometidos a un análisis estadístico que incluyó, promedios, desviación estándar y distribución de frecuencia entre otros. Este trabajo nos muestra los valores de la radiación UV en la ciudad universitaria encontrándose una radiación oscilante, entre 6000 μW/m2 a 7000 μW/m2 en los meses marzo-abril, entre 4000 μW/m2 a 6000 μW/m2 en los meses mayo-julio, en el mes de agosto los valores de radiación que se registro es de 5000 μW/m2 y mayor a 6000 μW/m2, los valores más altos de la radiación UV se muestran en los meses setiembre-noviembre, alcanzando 6000 μW/m2 y superando los 8000 μW/m2, siendo estos los meses más calurosos del año en la ciudad de Bagua.
Concentraciones de Cadmio en el sistema suelo-planta en los cultivos de café en dos sistemas de producción
Authors: Oliva Manuel , García Pérez Aguinaldo , Chuquizuta Ventura Ilser Isidro , Rubio Karol , Leiva Santos , Collazos Roicer
Published: May 2022

La preocupación por el contenido de cadmio en los suelos de áreas productoras de cultivos va en aumento en los últimos años. En la presente investigación, se evaluó la concentración de Cadmio en el sistema suelo, hoja y fruto en fincas cafetales bajo dos sistemas de producción, orgánica y convencional en el distrito de Omia, región Amazonas, Perú. Se muestrearon suelos, hojas y frutos y se midió la concentración de cadmio mediante la técnica de espectrofotometría, luego se realizó las comparaciones de mediante un análisis de varianza; además se caracterizaron los suelos según sus características de pH, materia orgánica y conductividad eléctrica para posteriormente realizar una correlación de Pearson. Como resultado se obtuvo que la concentración de cadmio en el sistema suelo, hoja y fruto, no superan los Límites Máximos Permisibles (LMP) estipulados por el Ministerio del Ambiente del Perú, obteniendo mayores valores en el suelo con 0,72 mg kg-1, mientras que menores valores se encontró en frutos con 0,1 mg kg-1. Comparado la concentración en dos sistemas de producción, se observa que tanto en suelo como en hojas la mayor concentración está en el sistema orgánico, mientras que en frutos la mayor concentración está en el sistema convencional. Además, se evidencia correlación significativa y positiva entre el contenido de cadmio de los suelos y características fisicoquímicas de estos como pH y porcentaje materia orgánica. En conclusión, los resultados obtenidos no sobrepasan los LPM, por lo que la concentración de cadmio en este cultivo no se considera como un problema.
Densidad óptima de crianza en baterías para cuyes (Cavia porcellus L.) de la raza Perú en la fase de crecimiento en condiciones del trópico húmedo
Authors: Buleje Solis Richard Christian , Díaz Céspedes Medardo , Gabriel Reátegui Reiner Pedro
Published: May 2022

El objetivo de esta investigación fue evaluar la densidad óptima en la crianza de cuyes de la raza Perú en la fase de crecimiento, en condiciones de trópico húmeda. Se utilizaron 200 cuyes (100 machos y 100 hembras) destetados de la raza Perú con 30 días de edad, distribuidos en un DBCA con 5 tratamientos (densidad = 8, 9, 10,11 y 12 animales/0.96m2) y 4 repeticiones, siendo el sexo el efecto de bloqueo, la diferencia significativa entre los tratamientos fue realizados con el test de Duncan (5%), además, se realizó la prueba de regresión lineal para determinar la densidad óptima. En los parámetros zootécnicos se observaron diferencias significativas (P<0.05); obteniéndose para la ganancia de peso, consumo de alimento y conversión alimenticia el mejor resultado se evidencio en el tratamiento T5 (D12) con 9.05g, 54.11g, 6.03 respectivamente. Se concluyó que la mejor densidad de crianza de cuyes de la raza Perú se dio en la fase de crecimiento y en condiciones de trópico húmeda es de 12 animales por 0.96 m2.
Etude des propriétés physico-chimiques et fonctionnelles du sirop de caroube
Authors: Tounsi Leila , Kechaou Hela , Kechaou Nabil
Published: May 2022

Le caroubier présente plusieurs intérêts pour toutes ses composantes, surtout pour ses fruits (gousses de caroube ou caroube). Plusieurs recherches scientifiques ont démontré que le fruit de caroube est riche en éléments nutritifs et composés phytochimiques. Ce qui explique son utilisation comme matière première pour la fabrication de divers produits, notamment le sirop de caroube. Certaines études ont été menées sur les caractéristiques physico-chimiques de ce produit, mais à notre connaissance, il n’y a pas encore des études scientifiques concernant ses propriétés fonctionnelles et son utilisation potentielle en industrie alimentaire. Donc, ce travail montre bien que le sirop de caroube possède des propriétés fonctionnelles intéressantes. Il présente une capacité émulsifiante (~80-87 %) comparable à celle de la lécithine de soja (~100 %), un émulsifiant largement utilisé dans les formulations alimentaires. Ce résultat révèle que le sirop de caroube peut être utilisé comme un émulsifiant alimentaire naturel pour la formation et la stabilité des émulsions.
A review of the management of Aphis fabae Scopoli (Hemiptera: Aphididae)
Authors: Bennour Chaker , Ben Belgacem Ali , Ben Nasr Hmed
Published: May 2022

The black-bean aphid Aphis fabae Scopoli is a serious agricultural threat spreaded almost worldwide. It threatens more than 200 host plant species and causes several damages through sucking sap, injuring leaves, the excretion of honeydew -inducing the development of sooty mould- and the transmission of plant viruses. Chemical aphicides are the most approach used to control A. fabae. Nevertheless, their extensive use has led to serious problems concerning human health and environment. These drawbacks led to apply eco-friendly strategies based on entomopahtogenic fungi, natural enemies and plants to manage the pest. In this paper, we review the biological control of A. fabae with special reference to management using plant extracts. Many plants belonging to several families are opted to control A. fabae. Several parts of these plants in particular leaves, stems and peels are used to eradicate it. Aqueous and alcoholic extracts are the most used forms. The mode of action of the major compounds of botanicals is through stomach or/and nerve poisoning.
Impact du rythme de pesage sur l’évaluation génétique de performances de croissance des chevreaux de la population caprine locale
Authors: Atoui Ahlem , Carabaño María J. , Abdennebi Mouldi , Najari Sghaier
Published: May 2022

L’opération la plus importante dans un schéma d’amélioration génétique est le contrôle des performances qui doit être simple, fiable et peu coûteux. L’étude vise à simuler les méthodes alternatives de simplification de l'enregistrement des poids à âge type pour calculer les gains moyens quotidiens (GMQ) des chevreaux locaux et évaluer l'impact de leur utilisation d'un point de vue génétique pour établir la base d’une amélioration future. Un total de 945 chevreaux (531 mâles et 414 femelles), issus de 19 boucs et 285 chèvres, nés entre 1998 et 2014, ont été utilisé dans cette étude. Les paramètres génétiques ont été estimés pour cinq phénotypes : GMQ (1 -30), GMQ (30-60), GMQ (60-90), GMQ (90-120), GMQ (120-150). L’âge de la mère à la mise bas, l’année et mois de naissance et le sexe du chevreau ont été inclus en tant que facteurs fixes, dans le modèle mixte. La simplification à une et deux semaines a conduit à des héritabilités directes et maternelles pour les différents gains moyens quotidiens, similaires à celles obtenues par l'enregistrement de croissance standard. Une réduction du nombre de contrôles à une et deux semaines pourrait donc être adoptée.
High diversity of responses among Medicago truncatula lines to Phoma medicaginis infection.
Authors: Maiza Nourhene , Jabri Cheima , Zaidi Nawres , Rafik Khawla , Khiari Bilel , Djébali Naceur , Teresa Sánchez-Ballesta Maria , Badri Mounawer
Published: May 2022

Medicago truncatula is an omni-Mediterranean species grown as an annual forage legume. In addition to its small genome size and simple genetics, M. truncatula harbors several attributes, which make it an attractive model forage plant. In this study, we investigated the variation of responses in ten parental lines of M. truncatula to Phoma medicaginis infection. Plants were cultivated in the growth chamber under controlled conditions and were inoculated after two months with P. medicaginis. At harvest, 13 quantitative traits of growth and pathogenicity were measured. Results from ANOVA showed that the variation of analyzed parameters was explained by the effect of line. All measured parameters, except the root fresh weight, showed significant difference among the 10 studied lines. Most tolerant lines are those with the lowest ratios of the number of infected and dead leaves. Studied lines were clustered into three groups according to their responses to P. medicaginis infection. The most resistant TN6.18 line and most sensitive F83005.5 to P. medicaginis are useful for the exploration of physiological mechanisms and genetic determinants for M. truncatula tolerance to this constraint.
Environmental variation and geographic distribution of the Brachypodium distachyon grass complex species’ in Tunisia.
Authors: Gandour Mhemmed
Published: May 2022

The Brachypodium genus contains the model grasses B. distachyon, B. stacei and B. hybridum, that are useful for molecular and physiological studies relevant to grain, pasture and bioenergy crops, as well as ecology. In this paper, we analyze the natural variation in climate/geographical diversity that exists within these species in the Tunisian territory. To capture the genetic diversity within this species complex in relation to their geographic distribution in Tunisia, 360 of Brachypodium accessions from the Tunisian territory were collected and genotyped by ALB165 marker. Overall, 314 samples were classified into hybridum and the rest as diploid for one of the two progenitor’s species (B. distachyon and B. stacei). Environmental niche analysis indicated that, generally, B. distachyon grows in higher, cooler, and wetter places north of 36°; B. stacei in lower, warmer, and drier places; nd B. hybridum in places with intermediate ecological features and across latitudinal boundaries but also overlapping with those of its parents, more often with those of B. stacei.
Educational reality under pandemic conditions – needs, challenges, supportive actions
Authors: Samborska Iwona
Published: May 2022

The purpose of this article is to show the specifics of education in the era of the COVID-19 pandemic, with particular emphasis on the e-learning formula. This goal was sought to be achieved by identifying the conditions that make up the educational reality at that time. Answers were sought to the questions – in what reality is e-learning implemented and how is this reality perceived by children/students? In terms of subject matter, the article focuses on the analysis of legal solutions and showing the theoretical basis for the functioning of education under conditions of a pandemic. Categories of reality and virtuality are discussed as areas of educational pandemic reality. From the subjective point of view, the focus is on the child/student functioning in conditions of the COVID-19 pandemic. The educational needs of the youngest and the need to take supportive actions in the individual and social dimension are indicated. The method of research was the analysis of literature and the analysis of the legal text. The considerations are carried out in the theoretical perspective with reference to contemporary approaches in humanistic, constructivist and connectivist didactics (Klus-Stańska, 2018). The analyses undertaken reveal that the situation of the pandemic is particularly acutely experienced by the youngest – children and adolescents, who have to face something that is in great contrast to their developmental needs and expectations of the world (cf. Ruszkowska, 2020). Educational challenges relate to the need to support the educational, caring, preventive function and include activities at different levels: central, institutional and individual.