bluuebunny/crossref_metadata_2025 huggingface dataset:
Les interruptions nuisent-elles à la capacité d’attention de votre équipe ?
Authors: Rousseau Alexandre , Bertholet Jean-François
Published: March 2022

Les troubles du déficit de l’attention ne touchent pas que les jeunes. Chez les adultes, un nouveau phénomène s’observe : le déficit d’attention organisationnel. Les nombreuses interruptions qui ponctuent le travail de vos employés en seraient la cause. Mais comment savoir si ce mal s’est infiltré au sein de votre équipe ?
Social Media at the Workplace
Authors: Turulja Lejla , Delalić Elma , Bajgoric Nijaz
Published: March 2022

this paper draws on Uses and Gratification theory and aims to explore the role and impact of different types of social media use at the workplace on employee innovative behavior and individual job performance. Structural equation modeling was used in the estimation of the model linking social media use, employee innovative behavior, and job performance. The findings suggest that only the cognitive use of social media in the workplace has a positive impact on employee innovative behavior and indirectly on job performance. In contrast, social use has a significant negative effect on job performance.
Coupling of Dimensionality Reduction and Stacking Ensemble Learning for Smartphone-Based Human Activity Recognition
Authors: Ramanujam E. , Rasikannan L. , Balasubramanian A.
Published: March 2022

Human activity recognition (HAR) plays a vital role in the field of ambient assisted living (AAL) for the welfare of the elders who live alone in the home. AAL provides service through ambient sensors, vision systems, smartphone devices, and wearable sensors. Smartphone devices are familiar, portable, cost-effective, and make the process of monitoring easier. Various research works have proposed smartphone-based HAR systems to recognize basic and complex activities. However, the results are not satisfactory for the case of postural transitions such as stand-to-sit, sit-to-sleep, etc. To improve the recognition rate, this paper couples principal component analysis with stacking ensemble learning for dimensionality reduction and classification respectively. Extensive experimentation of UCI repository datasets such as UCI-HAR has been performed and the performances are measured using familiar metrics such as accuracy, precision, and recall.
The Role of Social Media Usage and Engagement on Purchase Intentions for Fashion Brands
Authors: Thanasi-Boçe Marsela , Zeqiri Jusuf , Kurtishi-Kastrati Selma
Published: March 2022

This study aimed to examine the impact of fashion brand attachment on customer’s purchase intention and the role of social media usage and engagement on this relationship. The data were collected through surveys distributed randomly to 404 social media users in Albania during April 2020. PLS-SEM was used to analyze the relationships between Fashion Brand Attachment (FBA), Social Media Usage (SMU), Social Brand Engagement (SBE), and Purchase Intentions (PI). SMU integrated the social media activity during the coronavirus pandemic, motives, and frequency use of various platforms. The overall model revealed a positive impact of FBA in SBE and PI, indicating that customers with a stronger attachment to fashion brands show a higher commitment to purchase and recommend them to others. The results highlighted that SMU does not contribute directly to generate committed buyers, but moderates the FBA-SBE relationship, indicating an indirect influence on the intentions to purchase fashion brands.
Rapid Deployment of Team Nursing During a Pandemic: Implementation Strategies and Lessons Learned
Authors: Jones Kelly L. , Johnson Maren R. , Lehnertz Andrea Y. , Kramer Robert R. , Drilling Kelly E. , Bungum Lisa D. , Bell Sarah J.
Published: March 2022

Background

The COVID-19 pandemic increased the number of patients requiring intensive care nation-wide, leading to nurse staffing shortages in many units.

Local Problem

At the beginning of the statewide COVID-19 surge, a tertiary teaching hospital in the upper Midwest experienced a sharp increase in patients needing intensive care. To relieve the resulting staffing shortage, it implemented a pilot program to bring general care nurses into its 21-bed mixed specialty intensive care unit to free intensive care unit nurses to help staff the hospital’s COVID-designated units.

Methods

Using a team nursing model, the intensive care unit recruited, oriented, and incorporated 13 general care nurses within 4 days. Education and resources were developed to distinguish team nurses from intensive care unit nurses, introduce them to the intensive care unit environment, outline expectations, communicate between team nursing pairs, and guide charge nurses in making staffing decisions and assignments. Staff feedback identified additional resources, barriers, and successes. An adaptive process was used to improve and update tools and resources on the basis of staff needs.

Results

The pilot program ran for 6 weeks. Positive outcomes included a reduced need for float nurses and self-perceived reduction in nursing workload. The principal barrier was charge nurses’ challenges involving staffing-to-workload balance based on the existing staffing model. This model identified productivity of a general care nurse and an intensive care unit nurse as equivalent, despite differences in their skill sets.

Conclusion

Team nursing in the intensive care unit is an agile tactic easily replicated in dire staffing situations.
Intricacies of Ultrasound-guided Lumbar Plexus Block in Octogenarians
Authors: Diwan Sandeep , Nair Abhijit , Dadke Madhuri , Sancheti Parag
Published: March 2022

Background:

Ultrasound (US)-guided lumbar plexus block (LPB) could be technically challenging in elderly patients. The lumbar paravertebral sonoanatomy is undescribed in the elderly. In an attempt to understand the relevant sonoanatomy, identify the lumbar plexus elements, and understand the difficulties that encountered while performing LPB in elderly patients, we retrospectively analyzed US of 23 elderly patients who were administered US-guided LPBs.

Methods:

After institutional ethics committee approval, we retrospectively reviewed stored US images of lumbar paravertebral sonoanatomy in 23 elderly patients and analyzed psoas major muscle, lumbar vertebral body, lumbar nerve, and lumbar artery.

Results:

On US examination, features of psoas major muscle, lumbar vertebral body, lumbar nerve, and lumbar artery were noted and analyzed.

Conclusion:

US-guided visualization of the components of the lumbar paravertebral area is difficult and inconsistent in the elderly. Therefore, we suggest performing a scout scan, identify the structures, and use neurostimulation all the time for performing LPB in these patients.
Fabrication of Low-cost Realistic Three-dimensional Static Kidney Phantom for Ultrasound-guided Biopsy Applications
Authors: Fohely Firas , Oglat Ammar A. , Sabarna Khaled , Shweiki Zakaria , Hamoudeh Bayan , Shalaan Rulin
Published: March 2022

Background:

The rapid growth of using ultrasound-guided interventional procedures, including biopsy and drainage, which considered painful procedures, leads to improving the practice cycle of ultrasound-guided procedures. Fabrication of low-cost tissue-mimicking phantoms that serve as a training tool medium for kidney needle biopsy procedures has dramatically overcome the drawbacks associated with these practices, such as reducing the number of miss lesions, medical errors, and recurrence rate as well as these phantoms are widely available and considered a good substitute for cadavers which were not always available and relativity expensive. However, several drawbacks are associated with current kidney phantom models, mainly the short shelf life and the high fabrication cost.

Methods:

This study aims to fabricate a realistic three-dimensional static mature human kidney phantom from low cost and available material for training on ultrasound-guided interventional procedures mainly biopsy test; the material used to fabricate our model is the gelatin-agar mixture.

Results:

This model proved that it is a tissue-mimicking material by measuring their acoustic properties which nearly the same as real human kidney tissue.

Conclusion:

The results of practicing interventional procedures on our phantom model showed good and easy uses for interventional procedures training as well as make it a preferable and economically affordable model.
Intramural Gastric Metastasis
Authors: Roul Pradeep Kumar , Saran Sonal , Poonia Dharma Ram , Paul Pranoy
Published: March 2022

Intramural gastric metastasis of the esophageal carcinoma, excluding the direct extension of primary neoplasm, is rare. However, intramural metastasis to the esophagus is commoner than this. These are more common in squamous cell carcinoma variant. This signifies a poor prognosis. It is due to the spread of pathology through the intramural lymphatic channels. Sometimes the metastatic lesion is more extensive in volume than the primary. This is more often diagnosed on histopathology in postoperative specimens. We share our imaging experience with surface esophageal squamous cell carcinoma with giant intramural gastric metastasis infiltrating the liver in a 39-year-old male. Due to its rarity, and secondary lesion being more extensive than the primary leads to misinterpretation and wrong diagnosis. Knowledge of this rare phenomenon can prevent misdiagnosis, fasten the imaging workup, and ultimately improve the patient's survival.
Application of Ultrasound in Spine Kinematic Determination
Authors: Effatparvar Mohammad Reza , Sobczak Stéphane
Published: March 2022

Spine kinematic determination is required to diagnose or rehabilitate back pain due to spinal instability. Ultrasound imaging, as a less harmful and cost-effective method, has been recently applied to kinematic analysis. This study reviews all available published articles to see how much progress has been made in spine kinematic measurement by ultrasound. In this regard, we searched PubMed, Scopus, and Google Scholar among all available studies until 2021, using keywords such as ultrasound, spine, kinematics, rotation, twist, flexion, and bending. Finally, after identifying and scanning 183 articles, only nine articles were included, which analyzed spine kinematics by ultrasound. Among these nine articles, three reported axial displacements, three reported flexion/extension, and three reported axial rotation. Although ultrasound is a suitable alternative to other kinematic measurement methods, very little research and progress have been made in this area. Today, this method is still not used practically for spine kinematic measurement because the bone scans via ultrasound imaging are challenging to understand, and no three-dimensional kinematic measurement technique has been reported. However, recent advances in converting ultrasound images into three-dimensional images can pave the way for further improvements.
Mikhail Shubin (1944–2020)
Authors: Braverman Maxim , Friedlander Leonid
Published: March 2022

This volume is dedicated to the memory of Mikhail (Misha) Shubin who passed away on May 13, 2020. The articles that are presented in the volume are written by people who knew Misha well; some of them were Misha’s students or collaborators. The diversity of topics reflects the diversity of Misha’s interests. One of the authors of this preface (LF) knew Misha from 1974 when he took his pseudodifferential operators class as an undergraduate student. The second one (MB) was Misha’s colleague and collaborator.
Semiclassical Gevrey operators and magnetic translations
Authors: Hitrik Michael , Lascar Richard , Sjöstrand Johannes , Zerzeri Maher
Published: March 2022

We study semiclassical Gevrey pseudodifferential operators acting on the Bargmann space of entire functions with quadratic exponential weights. Using some ideas from time frequency analysis, we show that such operators are uniformly bounded on a natural scale of exponentially weighted spaces of holomorphic functions, provided that the Gevrey index is greater than or equal to 2.
Berezin–Toeplitz quantization associated with higher Landau levels of the Bochner Laplacian
Authors: Kordyukov Yuri A.
Published: March 2022

In this paper, we construct a family of Berezin–Toeplitz type quantizations of a compact symplectic manifold. For this, we choose a Riemannian metric on the manifold such that the associated Bochner Laplacian has the same local model at each point (this is slightly more general than in almost-Kähler quantization). Then the spectrum of the Bochner Laplacian on high tensor powers

L^p

of the prequantum line bundle

L

asymptotically splits into clusters of size

{\mathcal O}(p^{3/4})

around the points

p\Lambda

, where

\Lambda

is an eigenvalue of the model operator (which can be naturally called a Landau level). We develop the Toeplitz operator calculus with the quantum space, which is the eigenspace of the Bochner Laplacian corresponding to the eigenvalues from the cluster.We show that it provides a Berezin–Toeplitz quantization. If the cluster corresponds to a Landau level of multiplicity one, we obtain an algebra of Toeplitz operators and a formal star-product. For the lowest Landau level, it recovers the almost Kähler quantization.
Integral representations of isotropic semiclassical functions and applications
Authors: Guillemin Victor W. , Uribe Alejandro , Wang Zuoqin
Published: March 2022

In a previous paper, we introduced a class of “semiclassical functions of isotropic type,” starting with a model case and applying Fourier integral operators associated with canonical transformations. These functions are a substantial generalization of the “oscillatory functions of Lagrangian type” that have played major role in semiclassical and microlocal analysis. In this paper we exhibit more clearly the nature of these isotropic functions by obtaining oscillatory integral expressions for them. Then, we use these to prove that the classes of isotropic functions are equivariant with respect to the action of general FIOs (under the usual cleanintersection hypothesis). The simplest examples of isotropic states are the “coherent states,” a class of oscillatory functions that has played a pivotal role in mathematics and theoretical physics beginning with their introduction by of Schrödinger in the 1920’s. We prove that every oscillatory function of isotropic type can be expressed as a superposition of coherent states, and examine some implications of that fact.We also show that certain functions of elliptic operators have isotropic functions for Schwartz kernels. This lead us to a result on an eigenvalue counting function that appears to be new (Corollary 4.5).
Eigenvalues of singular measures and Connes’ noncommutative integration
Authors: Rozenblum Grigori
Published: March 2022

In a domain

\Omega\subset \mathbb{R}^{\operatorname{N}}

we consider compact, Birman–Schwinger type operators of the form

\operatorname{T}_{P,\mathfrak{A}}=\mathfrak{A}^* P \mathfrak{A}

with

P

being a Borel measure in

\Omega,

containing a singular part, and

\mathfrak{A}

being an order

-\operatorname{N}/2

pseudodifferential operator. Operators are defined by means of quadratic forms. For a class of such operators, we obtain a proper version of H. Weyl's law for eigenvalues, with order not depending on dimensional characteristics of the measure. These results lead to establishing measurability, in the sense of Dixmier–Connes, of such operators and the noncommutative version of integration over Lipschitz surfaces and rectifiable sets.
Invariant subspaces of elliptic systems II: Spectral theory
Authors: Capoferri Matteo , Vassiliev Dmitri
Published: March 2022

Consider an elliptic self-adjoint pseudodifferential operator

A

acting on

m

-columns of half-densities on a closed manifold

M

M, whose principal symbol is assumed to have simple eigenvalues.We show that the spectrum of

A

decomposes, up to an error with superpolynomial decay, into

m

distinct series, each associated with one of the eigenvalues of the principal symbol of

A

. These spectral results are then applied to the study of propagation of singularities in hyperbolic systems. The key technical ingredient is the use of the carefully devised pseudodifferential projections introduced in the first part of this work, which decompose

L^2 (M)

into almost-orthogonal almost-invariant subspaces under the action of both

A

and the hyperbolic evolution.
Link homology theories and ribbon concordances
Authors: Kang Sungkyung
Published: March 2022

It was recently proved by several authors that ribbon concordances induce injective maps in knot Floer homology, Khovanov homology, and the Heegaard Floer homology of the branched double cover. We give a simple proof of a similar statement in a more general setting, which includes knot Floer homology, Khovanov–Rozansky homologies, and all conic strong Khovanov–Floer theories. This gives a philosophical answer to the question of which aspects of a link TQFT make it injective under ribbon concordances.
Myoclonic status epilepticus after severe hyperthermia in a patient with coronavirus disease 2019
Authors: Hill Katherine A , Peters John J , Schaefer Sara M
Published: March 2022

Myoclonic status epilepticus (MSE) is a sign of severe neurologic injury in cardiac arrest patients. To our knowledge, MSE has not been described as a result of prolonged hyperpyrexia. A 56-yearold man with coronavirus disease 2019 presented with acute respiratory distress syndrome, septic/hypovolemic shock, and presumed community-acquired pneumonia. Five days after presentation, he developed a sustained fever of 42.1°C that did not respond to acetaminophen or ice water gastric lavage. After several hours, he was placed on surface cooling. Three hours after fever resolution, new multifocal myoclonus was noted in the patient’s arms and trunk. Electroencephalography showed midline spikes consistent with MSE, which resolved with 40 mg/kg of levetiracetam. This case demonstrates that severe hyperthermia can cause cortical injury significant enough to trigger MSE and should be treated emergently using the most aggressive measures available. Providers should have a low threshold for electroencephalography in intubated patients with a recent history of hyperpyrexia.
Activities of Law Enforcement Agencies in the Context of the Introduction of Innovative Technologies (Comparative Legal Aspect)
Authors: Tulinov Valentyn S. , Bilykh Iryna V. , Merdova Olga M. , Volobuieva Olena O. , Veselov Mykola Y.
Published: March 2022

The objective of the study was to determine the legal mechanisms for the use of innovative technologies in law enforcement and to outline the main problems of their implementation in the fight against crime. The methodological scheme of the article was the use of theoretical and empirical research methods, as well as comparative, structural and logical methods, documentary, and systems analysis. It is established that the main types of modern technologies used in law enforcement are unmanned aerial vehicles, artificial intelligence, robotics, biotechnology, analytical and geographic information systems, explosion locators and chatbots. The problems of introducing innovative technologies into law enforcement were found to be objective and subjective. The ways of overcoming them are offered through the creation of legal mechanisms for the legal use of various modern technologies by law enforcement agents. It is concluded that effective mechanisms for the use of innovations in law enforcement will increase the effectiveness of crime prevention and enable law enforcement officials to avoid conflicts related to violations of citizens' rights and the protection of national security.
Organizational and procedural aspects of obtaining testimony during a court interrogation
Authors: Turkot Mykola , Ponomarenko Alla , IIerusalymov Ihor , Peretyatko Serhiy , Shulha Oleksandr
Published: March 2022

The article makes a meaningful analysis of the scientific works and the rules of the Code of Criminal Procedure of Ukraine, which define the concept of testimony as a procedural source of evidence in criminal proceedings, its methods of obtaining, verifying, and evaluating. The legislative regulations and procedural procedure for the judicial interrogation of participants in criminal proceedings have been studied. Attention is paid to certain innovations in legislation that require scientific understanding, interpretation, and choice of appropriate tactics by a defense attorney, prosecutor, and judge. The methodological basis of the article is the complex application of general methods and special methods of scientific knowledge in its relationship, selected considering the purpose and objectives of the study, its object and theme. By way of conclusion, the proposals and recommendations of an organizational and tactical nature are based, aimed at improving police practice to address the existing problems of obtaining, verifying, and evaluating testimonies in the evidentiary process.
La fragilidad del poder mediante el enfoque analítico del personalismo político y el desdén del sentido común (Caso: México)
Authors: Vargas Camilo , Cazzato Salvador
Published: March 2022

La aparición del COVID-19 trajo consigo afectaciones en todos los niveles del modo de vida de la humanidad. Este ensayo quiere abarcar y analizar decisiones políticas durante esta coyuntura, especialmente, acerca de figuras políticas de gobernantes como lo es el caso paradójico del actual Presidente de México Andrés Manuel López Obrador AMLO, quien fungió y se condujo con un tratamiento ad hoc y sui generis ante la situación de pandemia; éste con sus designios asumió pensares, conductas y acciones de carácter personalista, que solo vinieron a atentar contra las vidas y los derechos fundamentales de los mexicanos (como el derecho a la vida, autonomía, entre otros). De forma que con su postura y posteriores actos públicos demostró una impericia insondable, un manejo transgresor acerca del respeto por los derechos fundamentales de sus conciudadanos y de sí mismo. El resultado obtenido del artículo refleja y evidencia la carencia de interés tanto por el derecho por la vida, la dignidad, el bienestar social como la solidaridad humana. Como conclusión preliminar se observó analíticamente el fenoménico denominado: personalismo político, el cual se ha constituido en una característica de las gobernanzas particularizadas, de carisma y liderazgos que se han instalado en determinadas naciones democráticas.
USSR policy of 1920 in relation to people forced to emigrate to Asian countries after the end of the civil war of 1917-1922
Authors: Baksheev Andrey Ivanovich , Severyanov Mikhail Dmitrievich , Vorontsov Vladislav Nikolaevich , Gaidin Sergei Tihonovich , Rogachev Alexander Georgievich , Safronov Sergey Alekseevich
Published: March 2022

It examines the military activities of white emigration in China, especially in Manchuria, evaluates attempts to influence the situation in the neighboring regions of the Soviet Union in the 1920s, and further characterizes the reaction of the Soviet authorities. General scientific methods (analysis, synthesis) and general historical (historical-genetic, historical-comparative; problem-based and chronological, historical-systemic) are used. The authors dwell on the background and reconstruction of the general context of the facts. Vivid and extensive quotations from various witnesses are provided. By way of conclusion, the hypothesis of the study is confirmed that the influence of white emigration on the life of the Soviet population, which is undesirable for the Soviet authorities, is eliminated by a combination of measures of force and propaganda: the creation of borders, troops, campaigns, and the assassination of emigrated leaders. The actions of the paramilitary units of the White emigration hinder the life of the local population and are neutralized thanks to the policy of the Soviet authorities.
Áreas naturales protegidas y modelos de negocios sustentables para una economía solidaria. Caso Baja California Sur, México
Authors: Lacruhy Enríquez Claudia Carolina , Beltrán Lizárraga María Guadalupe
Published: March 2022

El objetivo del estudio de caso fue analizar los componentes de los modelos de negocio sustentables de las áreas protegidas del Parque Marino de Cabo Pulmo y Sierra La Laguna en Baja California Sur, México. La metodología mixta de alcance exploratorio y descriptivo, con un diseño longitudinal; se entrevistó con un guion semiestructuradas a expertos, se aplicó un cuestionario con las dimensiones: perfil de empresa, componentes de modelo de negocio, estrategias y acciones de sustentabilidad, mismo que se validó por tres expertos en turismo con un índice de confiabilidad del 95% en tres empresas originarias de Cabo Pulmo, se realizó una etnografía virtual a tres ranchos de ecoturismo Sierra La Laguna, se observó los componentes y estrategias del modelo de negocio, comentarios de sus clientes en el perfil de Facebook. Los principales resultados mostraron que las dos áreas naturales protegidas poseen un programa de conservación y manejo; por consiguiente los modelos de negocio que operan las comunidades locales en Cabo Pulmo y Sierra La Laguna son sustentables, con un epicentro de innovación basado en la conservación y protección del medio ambiente, la propuesta de valor está enfocada en actividades de ecoturismo, las asociaciones claves se fortalecen por medio de una colaboración pública y privada, sin embargo al ser zonas rurales, tienen necesidades en servicios de infraestructura básica. Se concluye que la vinculación de solidaridad, colaboración, sostenibilidad ambiental y compromiso con el entorno debe brindar un bienestar social, por lo que, presentan avances significativos.
La inclusión educativa de los menores de edad con autismo en Jalisco, México. Una mirada documental
Authors: Govela Espinosa Roberto
Published: March 2022

Las familias que tienen integrantes con autismo y que quieren incluir a sus hijos e hijas a la educación, generalmente tienen como única opción los Centros de Atención Pública (CAM en adelante) Sin embargo, sus servicios son muy deficientes. De igual forma, aunque existe la opción a las asociaciones civiles que ofrecen el servicio educativo, por sus costos, son inaccesibles para estos. El objetivo de este trabajo es evidenciar cómo se ha generado la inclusión educativa de los menores con autismo de acuerdo a la literatura especializada en México en estos centros educativos públicos y contrastar esos resultados, con los hallazgos existentes en el contexto específico del estado mexicano de Jalisco, en base a una metodología de análisis de textos. Para este propósito se utilizó la metodología del análisis de textos científicos. Se concluyó que así como existen semejanzas en cuanto a las problemáticas identificadas en la inclusión educativa entre los estudios realizados en otras partes de la República mexicana, respecto a Jalisco, los diversos problemas que hay en los CAM, también hay diferencias como el análisis cualitativo de los significados que los agentes educativos le dan a sus prácticas en los CAM de Jalisco y la grave situación económica que sufren estas familias jalisciences que obstaculizan la inclusión educativa de sus hijas e hijos.
ĐÁNH GIÁ SINH TRƯỞNG, PHÁT TRIỂN VÀ NĂNG SUẤT CỦA MỘT SỐ GIỐNG NGÔ NẾP TẠI ĐIỆN BÀN, QUẢNG NAM
Authors: Văn Đức Nguyễn , Thị Duy Thuận Phan , Thị Lâm Phan , Phương Đông Trần
Published: March 2022

Tại thị xã Điện Bàn, tỉnh Quảng Nam những năm gần đây đã đưa một số giống ngô nếp vào sản xuất và cho thấy phù hợp với điều kiện khí hậu, thổ nhưỡng. Nghiên cứu được tiến hành trên 4 giống ngô nếp: HN88, MX6, CX274 và ADI602, thí nghiệm được bố trí theo kiểu khối hoàn toàn ngẫu nhiên, 3 lần nhắc lại, trong vụ Xuân 2019 tại xã Điện Phước, Điện Bàn, Quảng Nam nhằm chọn được giống ngô nếp có khả năng sinh trưởng, phát triển và năng suất cao để phát triển vùng nguyên liệu phục vụ chế biến sữa ngô nếp. Kết quả nghiên cứu cho thấy: chiều cao cây cuối cùng giống HN88 cao nhất đạt 248,3 cm. Năng suất lý thuyết và năng suất thực thu của giống HN88 cao nhất (161,2 tạ/ha và 155,7 tạ/ha). Hiệu quả kinh tế giống HN88 đạt cao nhất và thấp nhất là MX6.
ĐẶC TÍNH HÓA HỌC ĐẤT PHÈN TRỒNG KHÓM (Ananas comosus) VỤ TƠ TẠI XÃ TÂN TIẾN, THÀNH PHỐ VỊ THANH, TỈNH HẬU GIANG
Authors: Quốc Khương Nguyễn , Hoàng Trọng Châu , Vĩnh Thúc Lê , Ngọc Hữu Trần , Ngọc Thanh Xuân Lý
Published: March 2022

Mục tiêu của nghiên cứu là xác định đặc tính hóa học đất phèn trồng khóm tại xã Tân Tiến, thành phố Vị Thanh, tỉnh Hậu Giang nhằm đề xuất yếu tố trở ngại về đất cho canh tác khóm. Tổng số 15 mẫu đất được thu ở tầng 0-20 cm từ 15 vườn trồng khóm. Kết quả phân tích cho thấy đất trồng khóm ở ngưỡng rất chua. Ngoài ra, hàm lượng Al3+ và Fe2+ lên đến 20,4 meq Al3+/100 g và 787,8 mg/kg. Hàm lượng đạm tổng số được đánh giá ở mức trung bình, và lượng đạm hữu dụng được xác định ở dạng NH4+ là 40,4 - 227,4 mg/kg và NO3- có giá trị 13,1 - 96,3 mg/ kg. Hàm lượng lân tổng số thuộc nhóm giàu lân, nhưng hàm lượng lân dễ tiêu ở ngưỡng trung bình. Bên cạnh đó, hàm lượng lân khó tiêu Al-P, Fe-P và Ca-P đạt giá trị trung bình lần lượt là 42,9, 202,3 và 20,6 mg/kg. Hàm lượng cation được đánh giá ở ngưỡng trung bình. Hàm lượng chất hữu cơ được xác định ở mức cao. Nhìn chung, đất canh tác khóm có độ phì nhiêu ở mức trung bình. Cần bón lân từ sản phẩm sinh học để hạn chế lân bị cố định bởi nhôm và sắt.
ẢNH HƯỞNG CỦA DỊCH CHIẾT LÁ CHANH (Citrus aurantiifolia) VÀ MÀNG BAO ALGINATE ĐẾN CHẤT LƯỢNG CỦA CÁ LÓC (Channa striata) PHI LÊ TRONG ĐIỀU KIỆN BẢO QUẢN LẠNH
Authors: Phú Trần Minh , Toàn Trần Các
Published: March 2022

Đề tài được thực hiện nhằm mục đích khảo sát (i) khảo sát hoạt tính chống oxy hóa của dịch chiết lá chanh bằng hai phương pháp chiết khác nhau và (ii) ảnh hưởng của dịch chiết lá chanh (133 µg/mL) và màng bao alginate (0,5%) đến chất lượng cá lóc phi lê trong điều kiện bảo quản lạnh thông qua các chỉ tiêu tổng số vi sinh vật hiếu khí, giá trị cảm quan, và các chỉ tiêu hóa lý. Kết quả nghiên cứu cho thấy dịch chiết lá chanh được chiết bằng nước ở 100oC có hoạt tính chống oxy hóa tốt hơn so với chiết bằng dung môi ethanol 96% ở nhiệt độ thường. Khả năng khử gốc tự do 2,2 dipheny-2-picrylhydrazyl (DPPH) của dịch chiết lá chanh được chiết bằng nước ở 100oC (IC50 = 133 µg/mL) cao hơn so với dịch chiết bằng dung môi ethanol 96% (IC50 = 360 µgmL). Xử lý phi lê cá lóc với dịch chiết lá chanh kết hợp với màng alginate trước khi bảo quản lạnh đã làm chậm đi quá trình oxy hóa sơ cấp của phi lê cá, cải thiện được giá trị cảm quan của sản phẩm và ức chế tổng số vi sinh vật hiếu khí trong điều kiện bảo quản lạnh. Sản phẩm có thể bảo quản lạnh đến 12 ngày khi xử lý dịch chiết lá chanh và màng bao alginate trước khi bảo quản mà không ảnh hưởng đến an toàn vệ sinh thực phẩm.
ẢNH HƯỞNG CỦA LIỀU LƯỢNG PHÂN LÂN ĐẾN KHẢ NĂNG SINH TRƯỞNG, PHÁT TRIỂN VÀ NĂNG SUẤT LẠC TRONG VỤ XUÂN TẠI THỪA THIÊN HUẾ
Authors: Thanh Đức Trần , Thị Mỹ Duyên Nguyễn , Thùy Phương Nguyễn , Thị Diệu Hạnh Trương
Published: March 2022

Nghiên cứu này được tiến hành tại Thừa Thiên Huế với mục tiêu xác định được liều lượng phân lân thích hợp, góp phần tăng năng suất, phẩm chất và hoàn thiện quy trình kỹ thuật sản xuất lạc tại tỉnh Thừa Thiên Huế. Nghiên cứu đã bố trí thí nghiệm gồm 5 nghiệm thức, 3 lần nhắc lại theo phương pháp khối ngẫu nhiên đầy đủ. Kết quả nghiên cứu cho thấy lượng phân lân phù hợp (tính cho 1 ha) bón cho cây lạc trong vụ xuân tại tỉnh Thừa Thiên Huế là 01 tấn super lân trên nền 08 tấn phân chuồng + 500 kg vôi + 80kg urê  + 120 kg KCl.
The Role of Assisted Natural Regeneration in Accelerating Forest and Landscape Restoration: Practical Experiences from the Field
Authors: Alves Julio , Oliveira Mariana , Chazdon Robin , Calmon Miguel , Pinto Andreia , Darvin Eduardo , Pereira Bruna
Published: March 2022

This study analyzes case studies of assisted natural regeneration projects to pinpoint the key factors that trigger success. With the goal of accelerating ecosystem restoration globally, these insights can improve the planning and implementation of projects that promote biodiversity, climate action, and rural economic development.
Determination of microbiological quality of vegetables irrigated with Kano Abattoir wastewater
Authors: Abubakar Musbahu A , A. Olayemi , K. Babatunde
Published: March 2022

Microbiological contamination of vegetables occurs directly along the food chain resulting in a serious Health problem and consequently leading to death during the acute phase of the microbial infection. A total of 15 different samples were randomly purchased and analyzed for the presence of enteropathogenic organisms. Enumeration of aerobic mesophilic bacteria, fungi and coliform counts were carried out using standard procedures which is the use of most probable numbers (MPN). Isolation and identification of some pathogens was also carried out using standard procedures. The mean count of all the three (3) different samples (cucumber, tomato and lettuce) were exceeded the maximum acceptable limit (105cfu/g/ml) set by the Food and Agricultural Organizations (FAO). The highest mean count for both bacteria and fungi in all the 15 samples; cucumber with 1.52x105 cfu/g of bacteria and 1.01x105 cfu/g of fungi, tomato with 1.34x105 cfu/g of bacteria and 1.06x105 cfu/g of fungal, whereas, lettuce with 1.18x105 and 1.29x105 of bacteria and fungi respectively. Out of 15 different samples examined the occurrence of enteropathogenic organisms in all the sample were found to be 65% of cucumber while tomato had 60% followed by lettuce with 60%. This shows that cucumber samples are more contaminated due to the higher percentage of occurrence the enteropathogenic organisms in it. The results indicated that the vegetable samples examined in this study did not meet bacteriological quality standards. The implications of the results on human and environmental health are discussed.
Coronaviruses of the veterinary and socio-economic importance: Classification, pathogenicity, transmission, and evolution of the coronaviruses
Authors: Ismail Mohd Iswadi
Published: March 2022

Most of the coronaviruses are known because they are pathogens of veterinary and economic importance or of social importance. The current knowledge on the origin, diversity, evolution of coronaviruses, as well as treatment and prevention strategies, and their impact on animal industries are discussed in this paper. The contribution factors for the outbreak of pathogenic coronaviruses and the potential of spill over of zoonotic coronaviruses to humans are also highlighted in this review paper.
The effect of ratio between Tilapia fish (Oreochromis niloticus) and Otoshimi on properties of sago fish crackers
Authors: N. S. Abdul Rashed , F. A. Abdullah , A. M. Yusoff , H. R. Hasbollah , M. I. Ahmad , M. K. A. A Razab , A.K. Zulhisyam , Jamaludin Mohd Hafiz
Published: March 2022

Fish crackers are deep fried crackers normally made using fish and starch, and is a well known snack in South East Asia. Formulation of the fish crackers plays an important role not just in the quality of the product, but also for branding. In this study, fish formulation using tilapia and otoshimi was used which was added with sago as the starch base. A tilapia-based formulation of 1:1 with Sago showed good puffing with the highest expansion percentage at 4.21±0.66 and lowered hardness (2832.0±437.97 N/cm2) compared to the other formulations. Meanwhile, although increase expansion was associated with increase oil absorption, the 1:1 ratio of tilapia to sago had lower oil absorption percentage (4.20±0.86) compared to increasing sago in the formulation (1:1:4, Tilapia, Otoshimi, Sago which had oil absorption percentage of 6.53±3.22 %, and 1:0:2 which had oil absorption percentage of 5.50±1.37). Although the overall quality does not reflect a good quality cracker, it was interesting to note that tilapia alone with sago showed better expansion, low oil absorption and reduce hardness.
Molecular identifications of land snails (Gastropoda) and determination of its associated parasites
Authors: Ab Hamid Suhaila , Othman Izrena , Ramli Nor Amalina
Published: March 2022

Freshwater snail is known to be an intermediate host for parasites. However, little is known on terrestrial snails whether they can become host for any parasites as well. The identification of the land snails also need confirmation as there are disagreements on the classification result of land snail species. Therefore, this study was conducted to determine the prevalence of snail parasites in livestock and poultry farms from Penang and Kedah, Malaysia. Identification of the snail species was conducted based on the morphological features and mitochondrial cytochrome c oxidase subunit I (COI) gene analysis. Out of 105 individual snails collected, four species were found in this study with the highest prevalence of 47.62% (50/105) snails identified as Physella acuta followed by Macrochlamys sp. with 31.4% (33/105). While 14.3% (15/105) were identified as Physella cubensis and the lowest prevalence was identified as Filopaludina sp. with 6.7% (7/105). Among these four species, only Physella acuta and Macrochlamys sp. were found to be infected with helminth parasites namely trematode and nematode. Macrochlamys sp. recorded the highest prevalence of parasitic infection with the prevalence of 87.9%. Besides, there are 134 of endoparasite and 36 of ectoparasite found in this study namely, Barchylaima fuscatum (helminth), 3 unknown nematode, and 36 Riccardoella limacum or slug mite which was found on the surface and in the mantle cavity of the snails.
Preliminary study on hymenopteran distribution and abundance from island ecosystem of Tuba Island Forest Reserve, Langkawi
Authors: Mohammad Naser Nur Badrina , Ismail Wafiqah , Mohamad Jamil Norashirene , Nizam Nur ‘Aliyaa , Hambali Kamarul Ariffin , Mohd Hatta Siti Khairiyah
Published: March 2022

The study was performed to determine the diversity and distribution of Hymenoptera across the environmental gradient ranging from fringe forest, mid forest to inner forest. The study was conducted in a selected area of Tuba Island Forest Reserve from 17th to 21st September 2020 using Malaise trap, an insect capturing trap. During this study, a total of 133 individuals of Hymenoptera were sampled from 12 families and 27 morphospecies. Hymenoptera was most abundantly found in the forest fringe with 64 individuals (11 families, 25 morphospecies) and least abundant in the inner forest with 26 individuals (7 families, 8 morphospecies). The top three highest number of individuals recorded were Formicidae (43 individuals), Braconidae (28 individuals) and Ichneumonidae with 27 individuals. Shannon-Weiner Diversity Index (H') showed that the forest fringe had the highest diversity value with H'=1.80 while the lowest was recorded in the mid forest with H'=1.43. The Evenness Index (E’) was highest at mid forest (E’=0.81) and the Margalef Richness Index (R’) value recorded the highest at forest fringe indicating a high species richness with R’=2.40. Kruskal-Wallis test reveals that the distribution of Hymenopterans from the forest fringe to the inner forest did not differ significantly with P>0.05. High similarities in microclimate variables (monsoon season, temperature, humidity, and light intensity), resources availability, forest features, hiding places, and the presence of predators are among the factors influencing the homogeneity of the composition and abundance of Hymenoptera in Tuba Island. This study is the first checklist of Hymenoptera in Tuba Island and can be utilised as a baseline dataset for further ecological research at Tuba Island.
Impacto fiscal del aumento en la tarifa general del IVA en juegos de apuestas permanentes. Caso: Atlántico, Colombia 2015-2017
Authors: Uribe Montañez Susana , Martínez García Manuel
Published: March 2022

El presente estudio tuvo como objetivo analizar el impacto fiscal generado en el recaudo por el aumento de la tarifa general del impuesto al valor agregado del 16% al 19% en los juegos de apuestas permanentes como consecuencia de los cambios introducidos en la ley 1819 de 2106 en el departamento del Atlántico, Colombia, para el período 2015-2017. Tiene su sustento en autores como Flores (2018); Cases (2018); Dávila, Cid y Parra (2018); Pita (2016); entre otros. La metodología que se utilizó fue descriptiva, documental-bibliográfico, no experimental y para la recolección de la información se acudió a la consulta en las bases de datos de las entidades reguladoras del tributo en Colombia como la DIAN, fuentes documentales y estadísticas de la Empresa comercializadora de servicios del Atlántico, S.A. que es la operadora de los juegos de apuesta permanente en este departamento. Los resultados indican que para el sector de las apuestas permanentes los ingresos se vieron disminuidos debido a que el apostador mostró resistencia en el valor que asumían como impuestos al ser tres puntos porcentuales más de tributo y que en esa misma proporción vio disminuido su premio. Así, se concluye que el incremento de la tarifa afectó el importe de ingresos de los apostadores, del concesionario y por ende al estado, pues a menor apuesta menor impuesto que cobrar y recaudar.
ATROFIA MUSCULAR ESPINHAL: ALTERAÇÕES OCULARES E MOTORAS
Authors: Coelho Grellet Ana Carolina , Sonoda Rodrigo Trentin , Matilde dos Santos Erica
Published: March 2022

A atrofia muscular espinhal é uma doença autossômica e neurodegenerativa, é classificada conforme sua apresentação, idade de identificação e nível de gravidade. O portador de AME apresenta diversos distúrbios que podem ser observados desde a falta de preâmbulo, disfunções respiratórias em vários níveis, paralisias e limitações. É fundamental o trabalho multidisciplinar para o atendimento do portador dessa atrofia, buscando a qualidade de vida e prevenção fatores secundários provocados pela AME. Propõe-se pelo presente artigo apresentar a AME, sua fisiopatogênia, tratamentos e cuidados, e suas consequências oculares, através de pesquisas bibliográficas e revisão de publicados nas plataformas Scielo, Pubmed e Bireme.
External Debt and Economic Growth in Ghana
Authors: Bentum-Ennin Isaac
Published: March 2022

This study analyses the effect of growth rate of external debt on the growth rate of GDP and finds out whether Ghana suffers from a debt overhang problem. The results from a Johansen multivariate cointegration method employed on our data showed that (i) there exists a stable long run relationship among GDP, labour force, investment, exports and external debt; and (ii) the long run effect of external debt on GDP has been positive and that Ghana is not suffering from any debt overhang problem. This means that importation of capital or reliance on external resources will help promote economic growth in Ghana. It is therefore. ecommended that every effort should be made by authorities to make Ghana much more attractive to external resources. The results of the study also indicate that military coups (political instability) have not been significant in explaining the growth rate of GDP in Ghana.
Sustaining employability in a globalizing world: critical issues on enterprise-based training systems
Authors: Akorsu Angela Dziedzom , Akorsu Patrick Kwashie
Published: March 2022

Demand for skilled labour has been rising steadily as a result of globalization, technological advances and changes in work organization. In recent policy debates to increase employability in a globalizing world economy the crucial role of a high-quality educated and skilled workforce has gained prominence. This growing prominence, however, is based on the assertion that, a better trained labour force can increase competitiveness and better complement physical capital. There is the need to produce a workforce that is flexible enough to meet new challenges. What this means is that training systems are also under pressure to meet the demands of the changing labour market just as firms are underpressure to sustain competitiveness. The extent to which training systems, especially of developing countries like Ghana, are well placed to respond to the changing needs of the labour market is the central theme of this paper. We argue that existing training systems in most developing countries are not well placed to respond to changing labour market needs. We therefore present practical and workable suggestions.
The metro mass transportation scheme in Ghana: Issues, challenges and the way forward
Authors: Abane A. M.
Published: March 2022

For many authorities in Ghana's metropolitan areas, public transport provision is increasingly becoming problematic as daily trips of city dwellers tend to cover numerous suburbs or even satellite settlements, thereby increasing travel costs in terms of time, money and comfort. Rather than reducing travel times, enhancing economic activities and productivity of commuters as well as ensuring the safety and comfort of city dwellers, the public transport systems in developing cities such as Accra, Kumasi and Tamale in Ghana have become uncomfortable, risky and generally inconvenient. This paper focuses on the activities of the Metro Mass Transit Limited in Ghana since its inception in 2003. The paper first reviews the various processes that led to the introduction of yet another version of the defunct Omnibus Services Authority (OSA) Transport Company. This is followed by an outline of major challenges likely to confront the Company's operations. Employing selected features of a management model by Cummings and Worley (1997), the paper then proposes possible strategies to address the challenges. For purposes of clarity some references are made to the defunct OSA Transport Company as well as other private operators such as the Ghana Private Road Transport Union (GPRTU), Kingdom Transport and the State Transport Company (STC). The paper ends with suggestions for the training and education of operators of the MMTL designed to enhance their capacities to effectively manage the buses.
Community participation and sustainable forest management in the Twifo-Hemang-Lower Denkyira District
Authors: Aning-Agyei Millicent A. , Aning-Agyei Prince G. , Kendie Stephen B. , Tenkorang Emmanuel Y.
Published: March 2022

Community participation is central to the sustainable management of forest reserves. However, forest reserves in the Twifo-Hemang-Lower Denkyira District are disturbed by rural people even under collaborative forest management, which threatens forest sustainability. The study analysed the socio-economic importance of the reserves to the forest fringe communities, participation levels of the communities in reserve protection, and challenges stakeholders face in ensuring sustainable forest management (SFM). The study adopted a descriptive study design to assess community participation in SFM. Both simple random sampling and purposive sampling techniques were used to select the sample for the study. Questionnaire, interview schedule and focus group discussion guide were employed for the primary data collection. The main findings of the study were that forest fringe communities enjoyed some benefits from the forest but this was not enough. Their participation in SFM was only by upholding the forest by-laws. However, a major challenge was the farm raiding by elephants from the forest reserve. Community participation in SFM was at the 'lowest levels. Some of the challenges encountered by stakeholders in SFM were non-cooperation of community members and access restriction to forest resources. The study recommends that government should not only legally recognise forest ownership rights but also build the capacity of communities to allow higher community participation levels in SFM.