bluuebunny/crossref_metadata_2025 huggingface dataset:
Removal of agricultural wastewater pollutants by integrating two waste materials, fish scales and neem leaves, as novel potential adsorbent
Authors: Preetham Veeravalli , Vengala Jagadish
Published: July 2021

Only 2.5% of the world's water is fresh, despite the fact that water covers approximately 70% of the planet. This water is used for several recreational purposes and gets polluted by wastewater disposal directly into freshwater bodies. Effluents dispersed into water bodies could be from various sources like industries, households, and agricultural activities. These effluents comprise heavy metals and chemical wastes directly released into water bodies without treatment and could include major contaminants like nitrates, nitrites, ammonia and phosphates. The present study mainly focuses on removal of four significant pollutants from agriculture wastes, i.e., nitrates, nitrites, ammonia, and phosphates. These pollutants are removed using adsorbents via a process known as adsorption. Adsorbents used in the study are fish scales and neem leaves. Several studies have been carried out to measure the efficiency of adsorbents in the removal of contaminants. These studies include equilibrium studies, kinetic studies and isotherm studies. Based on a complete analysis and results obtained, 95% to 99% of contaminants can be removed effectively with an adsorbent dosage of 0.4g (0.2 g of fish scale and 0.2 g of neem leaves powder), optimum pH of 6 and at 303K constant temperature. The dosage variance stems from changing the dosages of two adsorbents in three ways, i.e., by taking both adsorbents in equal dosages, and increasing the dosage of one adsorbent compared to the other and vice versa. The contact time varied from 0 to 140min and the Initial concentration of pollutants has also been varied from 30 to 70 mg/L. In addition to the above variations, thermodynamic studies were also done, and based on the negative values of ΔG and positive value of ΔH and ΔS, it is evident that the reaction of novel adsorbent (combination of fish scales and neem leaves) is spontaneous and endothermic.
Synergistically homogeneous-heterogeneous Fenton catalysis of trace copper ion and g-C3N4 for degradation of organic pollutants
Authors: Yao Z. Y. , Zhu G. X. , Lu T. L. , Zhan Y. Z.
Published: July 2021

Using the bulk g-C3N4 as a precursor, four g-C3N4 nanosheets were further prepared by ultrasonic, thermal, acid, and alkali exfoliation. The structures of these materials were characterized by various techniques such as X-ray powder diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. The synergistical Fenton catalysis of these materials with Cu2+ was evaluated by using rhodamine B as a simulated organic pollutant. The results showed that there existed a significant synergistical Fenton catalysis between Cu2+ and g-C3N4. This synergistic effect can be observed even when the concentration of Cu2+ was as low as 0.064 mg L−1. The properties of g-C3N4 strongly influenced the catalytic activity of the Cu2+/g-C3N4 system. The coexistent of Cu2+ and the alkali exfoliated g-C3N4 showed the best catalytic activity. Hydroxyl radicals as oxidizing species were confirmed in the Cu2+/g-C3N4 system by electron paramagnetic resonance spectra. The synergistic catalysis may be attributed to the easier reduction of Cu2+ adsorbed on the g-C3N4. This study provided an excellent Fenton catalytic system, and partly solved the rapid deactivation of heterogeneous Fenton catalysts caused by the leaching of metal ions.
La importancia de un jardín doméstico en la conservación de macrolíquenes cortícolas en Veracruz, México
Authors: Guzmán Gastón , Pérez-Pérez Rosa Emilia , Ramírez-Juárez Julio Armando
Published: July 2021

La fragmentación del bosque mesófilo de montaña es el resultado del cambio de uso de suelo para establecer áreas agrícolas, pecuarias y asentamientos humanos, lo que ha provocado la disminución de la biodiversidad; sin embargo, en ocasiones las áreas urbanas, los parques y jardines privados protegen parte de dicha biodiversidad. Entre los grupos más vulnerables a la deforestación y transformación de los ecosistemas están los líquenes. Se estudió la riqueza de macrolíquenes cortícolas recolectados durante 16 años de ramas y árboles caídos de especies como Quercus xalapensis, Q. laurina, Platanus mexicana, Inga jinicuil y Ulmus mexicana, en un jardín privado con árboles característicos del bosque mesófilo de montaña en Zoncuantla, municipio de Coatepec, en la región central de Veracruz. Los resultados obtenidos se compararon con la riqueza de forofitos y líquenes registrados en un remanente de bosque mesófilo de montaña en La Cortadura, Coatepec, Veracruz. En el jardín se encontraron especies de áboles tales como Platanus mexicana, Inga jinicuil y Ulmus Mexicana que no habían sido mencionados en estudios previos de La Cortadura. Con respecto a la comunidad liquénica, se registraron 44 especies incluidas en 15 géneros y 6 familias. En el jardín se encontraron especies tolerantes a la luz y al viento, así como indicadoras de áreas urbanas y de contaminación por metales pesados. Los resultados de este estudio ponen de manifiesto que los jardines domésticos en zonas urbanas pueden funcionar como áreas de conservación de la biodiversidad.
Gestión administrativa de aplicaciones móviles y su efecto en la comercialización de productos de consumo masivo en el cantón Quevedo.
Authors: Solís Chang José , Bucheli Espinoza Xavier , Manjarrez Fuentes Nelly
Published: July 2021

La actual gestión administrativa de las empresas que usan aplicaciones móviles en Quevedo, se viene realizando sin un modelo de gestión definido. Al analizar la situación de estas empresas se define varios problemas, como: la ausencia de herramientas administrativas, la inadecuada administración de los negocios, evidenciando la falta de una estructura organizacional y conocimiento tecnológicos. La planificación y direccionamiento del modelo de negocios fue analizado a través de varios procesos y acciones que incentiven la adopción de una aplicación móvil para la comercialización de productos de consumo masivo. El objetivo de la investigación es evaluar la incidencia de la gestión administrativa de aplicaciones móviles y su efecto en la compra y entrega de productos de consumo masivo. El análisis de la gestión administrativa y la implementación tecnológica permitirá visualizar con mayor claridad los objetivos, debido a que los consumidores actuales no se le debe ofrecer productos o servicios sino conocimiento y experiencia, el presente trabajo plantea mejorar la gestión de los procesos administrativos y el desarrollo de una aplicación móvil para brindar el servicio de compra y entrega a domicilio de productos de consumo masivo. En este sentido, se encamina una propuesta de organización de procesos administrativos y operativos con el fin de incrementar la eficiencia operacional.
Natural History of the Wood Frog (Rana sylvatica) in the Shawnee National Forest, Southern Illinois
Authors: Redmer Michael
Published: July 2021

I studied several aspects of the natural history and population biology of R. sylvatica in the Shawnee National Forest (SNF) between 1993 and 1997. The primary objective was to conduct the first extensive study of this species in Illinois. The first portion of this study documented the distribution of R. sylvatica in the SNF. Observations of general aspects of natural history (predation, amphibian community associates, and larval period) were also recorded. I then identified and qualitatively characterized types of breeding ponds and woodland habitats in which the species occurs, and recorded the phenology of breeding activity and weather conditions at which they occurred. I then used skeletochronology to estimate individual ages of wood frogs, and compared statistical correlations between age and body length of individuals and female age and body length with clutch size and ovum size.
Using Acoustic Speech Patterns From Smartphones to Investigate Mood Disorders: Scoping Review
Authors: Flanagan Olivia , Chan Amy , Roop Partha , Sundram Frederick
Published: July 2021

Background

Mood disorders are commonly underrecognized and undertreated, as diagnosis is reliant on self-reporting and clinical assessments that are often not timely. Speech characteristics of those with mood disorders differs from healthy individuals. With the wide use of smartphones, and the emergence of machine learning approaches, smartphones can be used to monitor speech patterns to help the diagnosis and monitoring of mood disorders.

Objective

The aim of this review is to synthesize research on using speech patterns from smartphones to diagnose and monitor mood disorders.

Methods

Literature searches of major databases, Medline, PsycInfo, EMBASE, and CINAHL, initially identified 832 relevant articles using the search terms “mood disorders”, “smartphone”, “voice analysis”, and their variants. Only 13 studies met inclusion criteria: use of a smartphone for capturing voice data, focus on diagnosing or monitoring a mood disorder(s), clinical populations recruited prospectively, and in the English language only. Articles were assessed by 2 reviewers, and data extracted included data type, classifiers used, methods of capture, and study results. Studies were analyzed using a narrative synthesis approach.

Results

Studies showed that voice data alone had reasonable accuracy in predicting mood states and mood fluctuations based on objectively monitored speech patterns. While a fusion of different sensor modalities revealed the highest accuracy (97.4%), nearly 80% of included studies were pilot trials or feasibility studies without control groups and had small sample sizes ranging from 1 to 73 participants. Studies were also carried out over short or varying timeframes and had significant heterogeneity of methods in terms of the types of audio data captured, environmental contexts, classifiers, and measures to control for privacy and ambient noise.

Conclusions

Approaches that allow smartphone-based monitoring of speech patterns in mood disorders are rapidly growing. The current body of evidence supports the value of speech patterns to monitor, classify, and predict mood states in real time. However, many challenges remain around the robustness, cost-effectiveness, and acceptability of such an approach and further work is required to build on current research and reduce heterogeneity of methodologies as well as clinical evaluation of the benefits and risks of such approaches.
Mobile Apps as Audience-Centered Health Communication Platforms
Authors: Mackert Michael , Mandell Dorothy , Donovan Erin , Walker Lorraine , Henson-García Mike , Bouchacourt Lindsay
Published: July 2021

Health communication campaigns often suffer from the shortcomings of a limited budget and limited reach, resulting in a limited impact. This paper suggests a shift of these campaigns to audience-centered communication platforms—particularly, apps on mobile phones. By using a common platform, multiple interventions and campaigns can combine resources and increase user engagement, resulting in a larger impact on health behavior. Given the widespread use of mobile phones, mobile apps can be an effective and efficient tool to provide health interventions. One such platform is Father’s Playbook, a mobile app designed to encourage men to be more involved during their partner’s pregnancy. Health campaigns and interventions looking to reach expectant fathers can use Father’s Playbook as a vehicle for their messages.
Mobile Delivery of Mindfulness-Based Smoking Cessation Treatment Among Low-Income Adults During the COVID-19 Pandemic: Pilot Randomized Controlled Trial (Preprint)
Authors: Mhende Josephine , Bell Sharrill A , Cottrell-Daniels Cherell , Luong Jackie , Streiff Micah , Dannenfelser Mark , Hayat Matthew J , Spears Claire Adams
Published: July 2021

BACKGROUND

Smoking is the leading cause of premature death, and low-income adults experience disproportionate burden from tobacco. Mindfulness interventions show promise for improving smoking cessation. A text messaging program “iQuit Mindfully” was developed to deliver just-in-time support for quitting smoking among low-income adults. A pilot study of iQuit Mindfully was conducted in spring 2020, during the COVID-19 pandemic, among low-income and predominantly African American smokers.

OBJECTIVE

This pilot study examined the acceptability and feasibility of delivering Mindfulness-Based Addiction Treatment via mHealth during the COVID-19 pandemic.

METHODS

Participants were adult cigarette smokers (n=23), of whom 8 (34.8%) were female, 19 (82.6%) were African American, and 18 (78.3%) had an annual income of <US $24,000. They were randomly assigned to either 8 weeks of iQuit Mindfully as a fully automated standalone intervention or iQuit Mindfully in combination with therapist-led in-person group treatment. For participant safety, in-person mindfulness groups were transitioned to the internet and assessments also took place over the internet. Survey questions asked participants about changes in their stress, smoking habits and quit attempts, and their perceptions of the mindfulness and text messaging intervention in the context of the pandemic.

RESULTS

Most participants (n=15 of 21, 71.4%) indicated a change in stress due to the pandemic, of whom 14 (93.3%) indicated higher stress. Participants shared concerns about finances, homelessness, health, and social isolation. Most (n=17 of 21, 80.9%) believed that smoking increases the risk of contracting COVID-19, and although that was motivating for some, others expressed lower motivation to quit smoking because of higher stress. Most (n=18 of 21, 85.7%) stated that practicing mindfulness was helpful during the pandemic. Mean ratings of the helpfulness of text messages and the extent to which they would recommend the program to others were 7.1 (median 8 on a 10-point scale, SD 2.9) and 8.2 (median 9, SD 2.5), respectively. Through open-ended program evaluations, participants shared details about how mindfulness practices and the text messages helped them manage stress and feel a sense of social support during the pandemic. Moreover, 10 of 19 (52.6%) of participants achieved 7-day abstinence from smoking, with no differences between conditions.

CONCLUSIONS

This study supports the promise of text messaging and the use of teleconferencing to provide mindfulness and smoking cessation services to underserved populations during a pandemic.
Age and Social Disparities in the Use of Telemedicine During the COVID-19 Pandemic in Japan: Cross-sectional Study (Preprint)
Authors: Miyawaki Atsushi , Tabuchi Takahiro , Ong Michael K , Tsugawa Yusuke
Published: July 2021

BACKGROUND

The use of telemedicine outpatient visits has increased dramatically during the COVID-19 pandemic in many countries. Although disparities in access to telemedicine by age and socioeconomic status (SES) have been well-documented, evidence is limited as to how these disparities changed during the COVID-19 pandemic. Moreover, the equity of patient access to telemedicine has been scarcely reported in Japan, despite the huge potential for telemedicine expansion.

OBJECTIVE

We aimed to investigate changes due to age and SES disparities in telemedicine use during the COVID-19 pandemic in Japan.

METHODS

Using data from a large internet survey conducted between August 25 and September 30, 2020, in Japan, we examined the associations of participant age and SES (educational attainment, urbanicity of residence, and income level) with their telemedicine use in the following two time periods during the pandemic: April 2020 and August-September 2020.

RESULTS

Of the 24,526 participants aged 18 to 79 years (50.8% [n=12,446] women), the proportion of individuals who reported using telemedicine increased from 2.0% (n=497) in April 2020 to 4.7% (n=1159) in August-September 2020. After adjusting for potential confounders, younger individuals were more likely to use telemedicine than older individuals in April 2020. Although this pattern persisted in August-September 2020, we also observed a substantial increase in telemedicine use among individuals aged 70 to 79 years (adjusted rates, 0.2% in April 2020 vs 3.8% in August-September 2020; P<.001 after multiple comparisons). We found disparities in telemedicine use by SES in August-September 2020 that did not exist in April 2020. In August-September 2020, individuals with a university degree were more likely to use telemedicine than those with a high school diploma or less (adjusted rates, 6.6% vs 3.5%; P<.001). Individuals living in urban areas exhibited higher rates of telemedicine use than those living in rural areas only in August-September 2020 (adjusted rates, 5.2% vs 3.8%; P<.001). Disparities in telemedicine use by income level were not observed in either time period.

CONCLUSIONS

In general, younger individuals increased their use of telemedicine compared to older individuals during the pandemic, although individuals in their 70s also increased their use of telemedicine. Disparities in telemedicine use by educational attainment and urbanicity of residence widened during the COVID-19 pandemic.
Securing the Prohibition of Labour Exploitation in Law and Practice: Slavery, Servitude, Forced Labour and Human Trafficking in Italy, Spain and the UK
Authors: Cavanna Paola , Valverde Cano Ana Belén , Weatherburn Amy
Published: July 2021

The fight against contemporary forms of slavery is a top priority in the current global agenda. This article reviews and assesses the domestic diversity of labour exploitation regulation. In part 1, the article reviews the concept of labour exploitation in international and European law, whilst part 2 provides an overview of three legal frameworks - Italy, Spain and the UK. A comparative analysis considers the extent to which these countries implement international legal obligations both in law and practice. Finally, the article seeks to promote cross-fertilisation of experiences and dialogue among legal practitioners, both domestically and between different countries.
Thinking Beyond the Escape: Evaluating the Reintegration of Child Soldiers in Uganda
Authors: LaBranche Jillian
Published: July 2021

While the Lord’s Resistance Army has gained notoriety for its brutal tactics and abduction of Ugandan children, little attention has been given to the return and reintegration of these formerly abducted child soldiers. The absence of a formal reintegration program in Uganda has placed the burden of reintegration on international NGOs, but reliance on non-local organizations to successfully reintegrate child soldiers has proven challenging. This paper seeks to evaluate whether the process of reintegration in Uganda has been successful. With an overwhelming lack of up to date and methodologically sound research, variables such as PTSD, domestic violence, alcoholism, violent crime, and primary education rates are evaluated to indicate the current state of Northern Uganda. These variables indicate an unstable environment in Northern Uganda and suggest reintegration has proven unsuccessful in the Acholi region. The successful reintegration of child soldiers is demonstrated to be not merely a Ugandan issue, but an international issue.
Rise, Unite, Support: Doing “No Harm” in the Anti-Trafficking Movement
Authors: Countryman-Roswurm Karen
Published: July 2021

Awareness regarding domestic sex trafficking has increased rapidly over the last decade. However, as general awareness increases so too does the interest of multidisciplinary professionals and concerned citizens who, while well intended, cause significant strain on the anti-trafficking movement. Drawing upon personal, professional, and academic research expertise in the areas of runaway, homeless, and street youth, as well as domestic sex trafficking, this article provides insight into the current struggles within the anti-trafficking movement. It serves as a cry for those who wish to join the anti-trafficking movement to create contexts in which survivor-leaders are recognized and treated as competent leaders and in which current efforts are intentionally supported. Furthermore, it serves as a call of encouragement for survivors to unite; to stand up for themselves as individuals and as a collective group, and to recognize and utilize the full potential of their malleability, strength, knowledge, and passion.
ŽIVOTNI I RADNI USLOVI NEFORMALNIH SAKUPLJAČA SEKUNDARNIH SIROVINA
Authors: Birmancevic Jelena
Published: July 2021

Predmet ovog rada su uslovi života i rada neformalnih sakupljača sekundarnih sirovina. Cilj rada je ukazivanje na specifične teškoće sa kojima se susreće ova grupa radnika. Rad je nastao na osnovu rezultata empirijskog istraživanja akcionog tipa iz oblasti socijalne politike. Sakupljanje otpada je na našim prostorima uglavnom strategija preživljavanja Roma (svih starosnih grupa, uključujući i decu školskog uzrasta), sa niskim nivoom obrazovanja. Oni žive u lošim uslovima, bez neophodne komunalne infrastrukture i okruženi otpadom. Rade bez neophodne zaštitne opreme, alata i prevoznih sredstava, izlažući se brojnim zdravstvenim rizicima. Osim toga, obavljajući ovaj posao, sakupljači jedva uspevaju da obezbede minimum socijalne sigurnosti. Potrebna im je šira društvena podrška kako bi izašli iz začaranog kruga bede i siromaštva.
Automotive Safety Rolling Barrier
Authors: Raut Mr. Abhijit
Published: July 2021

The government is always looking at the latest technology that can ensure safety of road users, as outlined in the construction industry transformation plan. A small Korean manufacturing company invented a new concept longitudinal barrier, (The Rolling Barrier) which had continuous pipes covered with urethane rings. This study aims to evaluate the effectiveness of the “Rolling Barrier” and to understand the Rolling Barrier’s characteristics of crash cushioning, how to correct the vehicles running direction and the required strength of barriers. They convert that impact energy into rotational energy to propel the vehicle forward rather than potentially breaking through an immovable barrier. When a car hits the barrier, the rotating barrel converts shock from the vehicle to rotational energy. Upper and lower frames adjust tires of large and small vehicles to prevent the steering system from a functional loss. The Rolling Barrier can be effectively used in curved roads sections, ramps, medians and entrance or exit ramps in parking garages. In this paper, the description and studies of Rolling Barriers are elaborated. In 2015, there were 63,805 traffic accidents over on the Maharashtra, India, with 54.2 % composed of vehicles that crashed into longitudinal barriers. Such accidents can be drastically reduced if more safe barriers are installed for traffic safety. A small Korean manufacturing company invented a new concept longitudinal barrier, the Rolling Barrier (RB), which has continuous pipes covered with urethane rings. This study aims to evaluate the effectiveness of the RB & to understand the RB’s characteristics of crash cushioning, how to correct the vehicle’s running direction & the required strength of barriers. Experiments with barriers performance & crashing vehicle behavior at curved sections using a 1.3-ton passenger car & a 3.5-ton truck showed satisfactory vehicle behavior as they ran parallel with the RB after crashing. The structural problem of the RB wasn’t found during the time of the crash. In the strength performance test using the 8-ton truck & in the passenger protection test using the 1.3-ton passenger car, the RB satisfied the Ministry of Construction & Transportation’s “ Guidelines for Installation & Management of Road Safety Facilities.” The differences between the RB & conventional barriers where crash cushioning & required strength of barriers were involved were verified by mathematical equations. The RB can be effectively used in curved road sections, ramps, medians & entrance/exit ramps in parking garages. Keywords: -accidents, longitudinal barrier, rolling barrier, traffic barrier, vehicle, collision
Face with Mask Detection and Recognition for Smart Attendance System
Authors: Dhawale Shweta Panjabrao
Published: July 2021

In this paper we will see the face mask detection and recognition for smart attendance system. In current pandemic situation our proposed system is very useful. We have used here face algorithm technique, python programming and to capture the images open cv is used., open cv2 now comes with a very new face recognizer class for the face recognition and popular computer vision liberaay started by intel in 1999. Open cv released under BSD licence that’s why used in the academic projects. We have used the concept of deep learning framework for the detection of faces. our aim is to present the study of previous attempts at face detection and recognition for smart attendance system by using deep learning .these is rapidly growing technology with its application in various aspects.
Vocal Programming
Authors: Shelatkar Mitul
Published: July 2021

Vocal Programming or voice programming is going to be the need of the world as Programmers around the world are facing Repetitive stress injuries (RSI) in their upper limbs. RSI further causes cubital tunnel syndrome. The syndrome occurs when ulnar nerve gets pinched at the elbow causing pain and numbness in hands and fingers. We are interacting with our gadgets by talking to them with the help of voice assistants. But what if the software itself could be built using voice? That’s the idea behind vocal programming, an approach to developing software using voice instead of keyboard and mouse to write code. This paper talks about a system which will help RSI affected programmers to program with minimum use of their hands.
Design and Development of Ram Pump
Authors: Kothale Sammed
Published: July 2021

Due to A hydraulic ram (or water ram) pump is a simple, motorless device for pumping water at low flow rates. It uses the energy of flowing water to lift water from a stream, pond, or spring to an elevated storage tank or to a discharge point. It is suitable for use where small quantities of water are required and power supplies are limited, such as for household, garden, or livestock water supply. A hydraulic ram pump is useful where the water source flows constantly and the usable fall from the water source to the pump location is at least 3 feet.
Leaf Disease Discerning and Pesticides Recommendation using Neural Network
Authors: N S Patil
Published: July 2021

Crop production problems are common in India which severely effect rural farmers, agriculture sector and the country’s economy as a whole. Food production is to be compromised by various problems; one among them is leaf disease. In Crops, leaf plays a significant job as it gives data about the amount and nature of yield ahead of time contingent on the state of leaf. In this paper we propose the framework which takes a shot at pre-processing, feature extraction of leaf pictures from plant dataset pursued by convolution neural system for disease classification and suggesting Pesticides utilizing Tensorflow innovation.
Village Sanitation System for Village
Authors: Prajapat Mahendra
Published: July 2021

Sanitation is important of few years development goals which covers the important aspects of management of human excreta, domestic and industrial wastewater and hazardous substances .Hence, this project focuses on a selected rural area to plan a suitable water supply scheme in accordance with their demands and requirements. It hasnt be feasible to cover all villages with piped water supply because of various constraints such as Scattered and inaccessible nature of villages, Nonavailability of nearby water sources. The project also covered planning of facilities to maintain better sanitation and beautification of surrounding .Water is important and precious as it fulfils the basic necessity of life. It is necessary that the water used must be good and free from unwanted impurities or harmful toxic chemical compounds or bacteria More than 80 % of Indian population lives in rural areas, but only few of them have some form of potable water supply. It hasn’t be feasible to cover all villages with piped water supply because of various constraints such as Scattered and inaccessible nature of villages, Non- availability of nearby water sources.
Design and Analysis of Parison Blow Molding Using Adaptive Mesh
Authors: Yasmeen Syed Ayesha
Published: July 2021

Blow Molding is one of the most versatile and economical process available for molding hollow materials. When polyethylene is stretched, it exhibits strain-hardening properties, which are temperature, pressure, velocity and strain-rate dependent. In this paper, preform is made by extrusion and forced between two halves by pressurization. This process includes isothermal and transient flow of Newtonian fluid in complex geometries simultaneous with structuring and solidification. A time dependent problem is defined and setting material properties and boundaries condition for bottle blow molding. Numerical data available in POLYDATA for a time dependent problem using ANSYS POLYFLOW were applied. Results display in form contours associated with different variables at different time steps and good agreement with the bottle thickness profile is observed. In this paper, the analysis of the stretch-blow molding (SBM) process of polyethylene terephthalate (PET), parison plastic bottles is studied by the finite element method (FEM). A hyper elastic constitutive behavior was calibrated using material data available in literature in variant high temperatures and strain rates and was used in the numerical simulation. Hydrostatic pressure with convention heat transfer has been used instead of a blowing process. Comparisons of numerical results with experimental observations demonstrate that the model can predict an overall trend of thickness distribution. Through the study, it becomes clear that the proposed model is applicable for simulating the stretch-blow molding process of PET bottles, and is capable of offering helpful knowledge in the production of bottles and the design of an optimum preform.
Theoretical Aspects of the Concept of Value Chain Management
Authors: Tyapukhin A. P.
Published: July 2021

The purpose of the studyis to clarify and complement the theoretical aspects of the formation of the concept of value chain management, which provides, along with the concepts of demand chain management and supply chain management, the creation of an integral concept of chain management.

Methods of researchare methods of analysis and synthesis, induction and deduction, as well as classification, and tools are binary matrices providing for the joint use of two classification features.

As a result of the study,flow management sequences were developed in creating the value of the end user of products and/or services and the stages of transformation of flows of various types; proposed a classification of management situations related to the creation of value; identified the main options for obtaining and assessing the value of the end user of products and/or services; disclosed are processes for optimizing the value of the end user; harmonizing the parameters of value and flows of products and/or services; disseminating and transforming the values of end-users of products and/or services.

These results, when further refined, will reveal the areas of interaction between suppliers and consumers in the framework of joint management of values, requirements and supplies; Create prerequisites for improving supply chain management and logistics terminology; Organize better flow management within different chain management concepts, eliminating or reducing cross-functional and other barriers to the creation and delivery of value to end-users of products and/or services.

Further areas of improvement include the establishment of harmonized definitions of value chain management, value chain management and supply chain management to provide a basic definition of chain management; clarification of essence, content, causes of occurrence and methods of reduction of barriers on trajectory of movement of flows of control objects and reduction of time for their processing, movement and transformation.
The Digitalization Influence on the Transformation of Public Administration Methodology
Authors: Zotov V. V. , Vasilenko L. A.
Published: July 2021

The article shows that the ongoing processes of networkization, digitalization and hybridization lead to the creation of such a sociotechnical phenomenon as information and analytical platforms, which actualize a new type of social network relations between authorities and citizens in the public space of communications. In these conditions, a new methodology of public administration is required, which would take into account the digital realities of the modern world. According to the authors, the new concept of public administration should be built taking into account the development of a methodology for the following mutually conditioned processes: 1) creation of information and analytical platforms of the digital society; 2) formation of social structures in the network space; 3) configuration of relational networks for solving socially significant problems. It should be based on the actor-network concept and the digitalization ethics, the social network analysis, the relational sociology, the concept of figuration, the fractal-evolutionary concept, the concept of configuring a relational network of stakeholders.
Long-Term Outcome of a cohort of 272 patients undergoing sialendoscopy
Authors: Daele Arike Vanden , Drubbel Joekio , Lierde Charlotte Van , Meulemans Jeroen , Delaere Pierre , Poorten Vincent Vander
Published: July 2021

Objectives: To assess the cohort of patients undergoing sialendoscopic
intervention for improvement of symptoms and gland-related quality of
life at long-term follow up. Design: retrospective review of medical
records with a prospective follow-up by questionnaire. Methods: All
patients undergoing sialendoscopy between March 2008 and June 2020 were
analyzed in detail regarding indications, technical aspects and
postoperative course. To maximize follow-up, patients also received a
questionnaire by e-mail. Results: 272 sialendoscopies were performed in
221 patients. Median follow-up time was 37 months. The sialendoscopies
were performed in 130 patients for lithiasis, in 66 for stenosis, in 14
for recurrent parotitis of childhood, in 8 for recurrent sialadenitis of
unknown origin and in 3 for radio-iodine induced sialadenitis.
Complications occurred in 11 of 272 sialendoscopies (4%). Those were
iatrogenic perforations, temporary lingual nerve paresthesia and
swelling of the floor of the mouth. 53% of patients returned the
questionnaire, for a total of 146 evaluable sialendoscopies. The
majority of the responders indicated that sialendoscopy had improved
their symptoms (83.6%). Salivary glands could be preserved in 89% of
the responder group. The highest percentage of patients reporting
residual symptoms was found in the RPC group (81.3%) and the lowest in
the lithiasis group (16.2%). Besides age, no statistical differences in
demographic and pathological features between the responder and
non-responder groups were found, supporting generalization of the
responders’ results to the entire cohort. Conclusions: This study
confirms the good long-term outcomes of sialendoscopic interventions in
patients with chronic sialadenitis of different etiologies and a high
rate of gland preservation.
Combined multivariate statistical and flux balance analyses uncover media bottlenecks to the growth and productivity of CHO cell cultures
Authors: Yeo Hock Chuan , Park Seo-Young , Tan Tessa , Ng Say Kong , Lakshmanan Meiyappan , Lee Dong-Yup
Published: July 2021

Chinese hamster ovary (CHO) cells are widely used for producing
recombinant proteins. To enhance their growth, productivity, and product
quality, practically media reformulation has been one of key focuses
with several technical challenges which are due to the myriad of
intricate molecular and regulatory mechanisms underlying the media
effects on culture behaviours; it is highly required to systematically
characterize metabolic bottlenecks of cell cultures in various media
conditions. To do so, we combined multivariate statistical analysis with
flux balance analysis of a genome-scale metabolic model of CHO cells
based on the culture profiles of CHO-DG44 under one commercial medium
and two in-house media. At the outset, we used partial least square
regression to identify metabolite exchanges that are correlated to
specific growth and productivity. By using a commercial medium as
reference, we found sub-optimal level of four nutrients and two
metabolic wastes that plausibly hinder cell growth and productivity with
in-house media. Subsequently, we elucidated that the recycling of
lactate and ammonia wastes to be affected by both glutamine and
asparagine metabolisms mechanistically, and further modulated by
hitherto unsuspected folate and choline supplements. In summary, the
current work successfully demonstrated how multivariate statistical
analysis can be synergistically combined with in silico analysis of
metabolic models to uncover the mechanistic elements underlying the
differing performance of various media. Our approach for the systematic
identification of promising nutrient targets thus paves the way for cell
culture medium reformulation to enhance cellular growth and recombinant
protein production.
A Case of Massive Left Atrial Thrombus
Authors: Ahn John , Burke Colin , Howitt Lindsay , Glenie Tim , Lau Gary
Published: July 2021

Rheumatic heart disease is the most common cause of mitral valve
stenosis. Left atrial appendage thrombus is associated with mitral
stenosis, but in rare cases the thrombus can extend to the left atrial
cavity. We present a case of a severe rheumatic mitral stenosis and
associated large left atrial thrombus, with embolic sequelae.
Familial Essential Thrombocytemia : 6 cases from a mono-institutional series.
Authors: Accurso Vincenzo , Santoro Marco , Mancuso Salvatrice , Vajana Giorgia , Tomasello Riccardo , Rotolo Cristina , Camarda Giulia , Mattana Marta , Siragusa Sergio
Published: July 2021

Essential thrombocythemia is chronic myeloproliferative neoplasia, as
defined by WHO in 2016, with the best prognosis. A small percentage of
ET cases can be considered Familial ET. In this report we describe 6
cases of Familial ET, evaluating the heterogeneity of the mutational
state and the clinical presentation.
The novel use of emapalumab and ruxolitinib in acquired malignancy-associated hemophagocytic lymphohistiocytosis in pediatric patients
Authors: Vo Kenny , Chung Jo , Panigrahi Arun
Published: July 2021

Hemophagocytic lymphohistiocytosis (HLH) is a potentially fatal syndrome
of immune dysregulation that is classified into primary and secondary
forms. The standard of care is established with dexamethasone and
etoposide, but there are currently no guidelines for refractory HLH or
cases triggered by infection or malignancy. [1] We describe here a
series of pediatric patients with malignancy-associated HLH (m-HLH) to
discuss the complexities in the initial diagnostic considerations, the
balance of therapeutic regimens and their toxicities, and the novel use
of emapalumab and ruxolitinib in patients with refractory disease.
Sistemas agroforestales como alternativa de manejo sostenible en la actividad ganadera de la Orinoquia Colombiana
Authors: Abril Y.R.
Published: July 2021

En los últimos años, se han acentuado esfuerzos en la búsqueda de tecnologías sostenibles, que permitan recuperar y mantener el potencial productivo de las áreas degradadas y diversificar la gama de productos, con el fin de permitir mayor competitividad. En este aspecto, es donde se ha destacado la agroforestería como alternativa sostenible para los procesos productivos del sector agropecuario. Los sistemas Agroforestales (SAF), son formas de uso y manejo de los recursos naturales en los cuales especies leñosas (árboles, arbustos, palmas) son utilizadas en asociación deliberada con cultivos o con animales en el mismo terreno, de manera simultánea o en una secuencia temporal. Dentro de las ventajas de la agroforestería se pueden mencionar la disminución de la degradación del suelo, el mejoramiento de la fertilidad del suelo con incremento en la materia orgánica y aporte de nitrógeno, control de condiciones medioambientales adversas (vientos, excesiva temperatura, evaporación del recurso hídrico, etc.), sombra y alimento para animales y disponibilidad de productos comercializables. Por tal razón, se ha postulado que los SAF más exactamente los silvopastoriles, se han combinado de diversas formas para la producción animal con árboles hacia diferentes propósitos, respondiendo en parte a los problemas de la deforestación y degradación de los ecosistemas y a la sostenibilidad de la ganadería. Los árboles fijadores de nitrógeno aparecen como particularmente prometedores para reducir el proceso de degradación e intensificar en forma sostenible la producción de proteína de origen animal.
Sistemas de producción agroforestales. Capacitación y análisis en: “conceptos generales y definiciones”
Authors: Iglesias J.M.
Published: July 2021

Las graves afectaciones que han tenido, de forma general, los recursos naturales y la actual crisis económica y social que atraviesan diversos países, han revitalizado el interés por lograr un desarrollo acelerado y sostenido de la agricultura, el cual solo se conseguirá en la medida en que las estrategias de producción sean congruentes con el uso racional del ecosistema. En este contexto, el visualizar la actividad agropecuaria en sistemas agroforestales constituye un enfoque válido, necesario y actual en la investigación y la capacitación para el desarrollo pecuario de los trópicos. Los sistemas de producción agroforestales se definen como una serie de sistemas y tecnologías del uso de la tierra en las que se combinan árboles con cultivos agrícolas y/o pastos, en función del tiempo y el espacio para incrementar y optimizar la producción en forma sostenida. Estos sistemas pueden contribuir a solucionar problemas en el uso de los recursos naturales debido a las funciones biológicas y socioeconómicas que cumplen. Desde el punto de vista biológico, la presencia de los árboles favorece los sistemas de producción en aspectos tales como el mantenimiento del ciclaje de nutrimentos y el aumento en la diversidad de especies. Además, debido a la estructura vertical proporcionada por los árboles y otras especies leñosas, pueden convivir plantas y cultivos con diferentes requerimientos de luz; asimismo, los árboles protegen al suelo de los efectos del sol, el viento y las fuertes lluvias que caracterizan al trópico. El uso de prácticas agroforestales también puede proveer beneficios económicos y socioculturales, entre los cuales se pueden mencionar la disminución de los riesgos económicos por la diversificación de la producción y la creación de nuevos puestos de trabajo en tareas de viveros, siembras, mantenimiento de áreas, etc. Los primeros intentos para definir la agroforestería se remontan a 1977-1979, Combe y Budowski, la definían como “un conjunto de técnicas de manejo de tierras, que implican la combinación de los árboles forestales, ya sea con la ganadería, o con los cultivos”. Sin embargo, la palabra agroforestería llegó a nuestro idioma proveniente del inglés agroforestry, por lo que en los últimos años se han expresado diversos criterios acerca de la verdadera definición de este concepto. Se ha venido usando indistintamente las palabras: agrosilvopastoril, sistemas agrosilvopastoriles, agrodasonomía y agrosilvicultura, entre otras. En el desarrollo de este artículo reseña se hará uso de los términos agroforestería y sistemas agroforestales, por ser los más usados en la literatura revisada para definir las técnicas agroforestales. También se hace necesario aclarar que se abordarán los sistemas agroforestales más relacionados con los cultivos agrícolas y sus combinaciones, debido a que en años anteriores se publicó un artículo en esta misma revista acerca de los sistemas silvopastoriles para la ganadería.
Identificación y efectos de los diferentes métodos del amamantamiento restringido sobre la funcionalidad ovárica posparto en hembras bovinas mestizas doble propósito
Authors: Vargas Ángel Gino Odair , Jaramillo Hernández Dumar Alexander
Published: July 2021

El anestro posparto es una de las causas principales que limitan la eficiencia productiva y reproductiva de las ganaderías doble propósito en las regiones tropicales donde se utiliza el ternero como apoyo somatosensorial para la producción de leche. El amamantamiento continuo y la presencia constante del ternero inhiben la secreción de GnRH en el Hipotálamo debido al incremento de los opioides endógenos y del estradiol en hipotálamo e hipófisis, afectando negativamente la especificidad de la GnRH. El amamantamiento restringido es utilizado como una opción de manejo para reducir los efectos negativos mamogénicos del ternero sobre la actividad ovárica posparto. Los diferentes modelos de amamantamiento restringido (destete precoz, destete temporal, amamantamiento una vez por día, enlatado) utilizados en ganaderías Doble propósito se diferencian en la técnica y procedimiento, obteniendo en muchos casos diferentes resultados.
Control integrado de la mosca Stomoxys calcitrans en el cultivo de palma de aceite (Elaeis guineensis Jacq)
Authors: Martínez Perilla Julio Andrés , Calvache Guerrero Hugo , Mantilla González Carlos Eduardo
Published: July 2021

La producción masiva de raquis fresco en los cultivos de palma africana (Elaeis guineensis Jacq) han generado la oportunidad de desarrollo biológico de la mosca brava o de los establos Stomoxys calcitrans, incrementado la población de este insecto hematófago, afectando las ganaderías de la región, de Villanueva (Casanare). Para determinar la fluctuación poblacional de esta mosca sobre los montones de raquis dispuestos en campo se realizó un ensayo para lo cual se seleccionaron los lotes denominados F 15, F 16, F 17, F 18, E 20, E 21, E 22 y E 23, teniendo en cuenta la cercanía al sitio de acopio de raquis para favorecer la presencia de mosca de los establos. La distribución de los tratamientos en los lotes se hizo en bloques completos al azar. De acuerdo a los resultados si se observó un efecto del cubrimiento del raquis con carpas hechas de lonas, sobre la población de mosca. Los tratamientos 20, 25 y 30 días con carpa con y sin Spalangia sp. fueron los que presentaron un mayor desarrollo biológico de la mosca de los establos. El parasitismo de Spalangia sp sobre pupas de mosca de los establos, disminuyó en 16.35% la población, lo cual demuestra la importancia de las liberaciones de este parasitoide, ratificando la necesidad de mantener poblaciones establecidas en campo, para un eventual manejo de raquis con carpas de lona, como un componente dentro de la técnica del cubrimiento. También se observó que existe un factor de mortalidad natural de 41% de mosca de los establos en estado de pupa en campo.