bluuebunny/crossref_metadata_2025 huggingface dataset:
Az észlelt kockázat utazási szándékra gyakorolt hatása konfliktusövezetekben: elméleti keretmodell
Authors: Bayramov Elimdar , Agárdi Irma
Published: February 2022

A politikai instabilitás okozta konfliktusok száma világszerte növekszik, ami negatív hatást gyakorol a tu­rizmusra és növeli az utazással kapcsolatos észlelt kockázatot. A turizmus-szakirodalomban kevés olyan kutatást végeztek, amelyek a konfliktusövezetekben található desztinációkkal kapcsolatos utazási szándék befolyásoló tényezőit vizsgálták. A tanulmány célja, hogy egy olyan elméleti keretmodellt alakítson ki, amely az észlelt kockázat és a turisták látogatási szándékának összefüggését vizsgálja konfliktusövezetek­ben található desztinációkban. A keretmodellt a tervezett magatartás elméletét alapul véve alakítottuk ki, amely figyelembe veszi az észlelt kockázat és észlelt bizonytalanság hatását az utazási szándékot és tény­leges magatartást meghatározó tényezőkre: a tényleges magatartásra vonatkozó attitűdökre, a szubjektív normákra és az észlelt magatartásirányításra. Új elemként jelenik meg a modellben, hogy a desztinációval kapcsolatos korábbi tapasztalat és a desztinációimázs szintén befolyásolja az utazási szándékot. Az elmé­leti keretmodell egy jövőbeni empirikus kutatás kiindulópontja.
Effectiveness of Deep Learning Trained on SynthCity Data for Urban Point-Cloud Classification
Authors: Spiegel Steven , Shanks Casey , Chen Jorge
Published: February 2022

3D object recognition is one of the most popular areas of study in computer vision. Many of the more recent algorithms focus on indoor point clouds, classifying 3D geometric objects, and segmenting outdoor 3D scenes. One of the challenges of the classification pipeline is finding adequate
and accurate training data. Hence, this article seeks to evaluate the accuracy of a synthetically generated data set called SynthCity, tested on two mobile laser-scan data sets. Varying levels of noise were applied to the training data to reflect varying levels of noise in different scanners.
The chosen deep-learning algorithm was Kernel Point Convolution, a convolutional neural network that uses kernel points in Euclidean space for convolution weights.
أثر جائحة كورونا Covide 19) ) على المسؤولية العقدية للناقل الجوي عن تأخير رحلات النقل أو الغاءها "قراءة في قانون تنظيم الطيران المدني البحريني الصادر بالقانون رقم (14) لسنة 2013 والقانون المدني البحريني
Authors: جناحي د. وفاء يعقوب
Published: February 2022

إن جائحة كورونا، وما ترتب عليها من إجراءات احترازية لم تشهدها الأجيال الحالية، أثرت بشكل مباشر على كثير من القطاعات، أولها قطاع الطيران، ومن المنطقي أن تمتد تبعاته إلى الالتزامات التعاقدية، مثل عقود النقل والشحن الجوي. 

 

لذلك أثير جدل قانوني بين فقهاء القانون بعد ظهور الفيروس  في الصين وانتشاره في أغلب دول العالم، حول مدى احقية شركات الطيران الذين اضطروا إلى توقيف أنشطتهم تنفيذاً للقرارات الوقتية الصادرة من الحكومات في مختلف دول العالم الاستناد إلى هذه القرارات لتبرير فسخ عقودهم أو تأجيل تنفيذ التزاماتهم في المواعيد المتفق عليها؟ 

 

 في الحقيقة ذهب البعض إلى اعتبار الأوبئة ومنها فيروس كورونا من قبيل القوة القاهرة التي يستحيل معها تنفيذ الالتزامات وبالتالي يجوز لشركات الطيران التمسك بها لإعفائها من المسؤولية ومن ثم فسخ العقد، في حين تمسك البعض الآخر على تكييف الأوبئة التي تصيب البشرية على أنها ظروف استثنائية عامة مؤقتة لا تجعل تنفيذ الالتزام مستحيلا بل تؤدي فقط إلى تأجيله، وبالتالي يرى أصحاب هذا الرأي بإمكانية تطبيق نظرية الظروف الطارئة على عقود النقل متى توافرت شروطها.  وهناك اتجاه ثالث يرى بأن الأسباب التي منعت شركات الطيران من تنفيذ التزاماتها في ظل جائحة كورونا هو ليس الفيروس بذاته وإنما الإجراءات الحكومية والتدابير الاحترازية المترتبة على انتشار الفيروس والتي تكيف على أنها من أفعال الغير وتعتبر صورة من صور السبب الأجنبي.
Variation in Antioxidant Activity and Antioxidant Constituents of Ocimum basilicum Linn with the Maturity of Plant Grown in Open Field and Inside Polyhouse Conditions
Authors: Pandey H.K. , Guglani Anchala , Balakrishna Gaddam , Kumar Vinod
Published: February 2022

The variation in antioxidant activity and antioxidant constituents of different plant growth stages i.e. in every 15 day’s interval till maturity of plant of Ocimum basilicum Linn. grown in an open field and inside polyhouse conditions was studied. The correlation between antioxidant constituents and antioxidant activities was also studied. The result revealed that the 90 days old plant grown in an open field condition exhibited maximum antioxidant activity with the lowest IC50/EC50 value by ABTS (0.064 mg/ml), DPPH (0.090 mg/ml), and FRAP (0.099 mg/ml) followed by 75 days and 60 days old plants, similar pattern was also observed in their antioxidant constituents. Similarly, the 90 days old plant grown inside polyhouse condition showed maximum antioxidant activity with antioxidant constituents followed by other plant growth stages in descending order. The chlorophyll content was found maximum in 15 days old plant(0.926 mg/100g) grown in an open field condition, whereas the maximum chlorophyll content (1.470 mg/100g) exhibited by 90 days old plant grown inside polyhouse condition. The correlation analysis revealed that the antioxidant constituents exhibited a significant negative correlation with the IC50/EC50 value and the IC50 value of ABTS assay had a significantly positive correlation with the IC50 and EC50 value of DPPH and FRAP assay, respectively. Hence, the study revealed that the leaves extract of plant grown in open field conditions possesses a significantly higher antioxidant activity and antioxidant constituents than the plant grown inside polyhouse condition.
In vitro Anti Diabetic Potential of Loranthacean Hemi Parasite Helicantes elasticus Desv Danser Collected from Six Different Hosts
Authors: T.G. Ajithkumar , Mathew Lizzy
Published: February 2022

In vitro anti-diabetic potential of methanolic extract of Helicantheselasticus(Desv.) Danser growing on six different hosts and thereby comparing the host’s influence on this parasitic plant for this efficacy was studied and statistically analysed. The results showed that Hemiparasite collected from Heveabrasiliensis, Citrus maxima, Anacardiumoccidentale and Saracaasoca were found highly effective in this regard. Highest inhibition on α-amylase was shown by H.elasticuscollected from Heveabrasiliensis where as inhibition of α-glucosidase was found to be highest in hemiparasite obtained from Citrus maxima. The host plants selected under study was also found good in reducing the blood glucose level. The study clearly reveals the fact that, anti-diabetic potential of H.elasticus have significantly influenced by the host trees.
A Modified Non Electrical Filter for Decontamination of Iron Rich Water for Rural Application
Authors: Umlong Iohborlang M , Dutta Dhiraj , Dubey Rama , Dwivedi Sanjai K.
Published: February 2022

A non-electrical filter is designed to cater the need of providing iron free water in forward and rural areas. The features of the unit are equipped with the aeration system and activated sand chemically coated by iron oxide as catalytic and filtering media which can bring down iron concentration from 12 mg/L to desirable limit. It increases the pH of water from acidic to pH above 7. This is in contrast to some indigenous water filter which existed in the North Eastern India that tend to remove iron below 4 mg/L. The modified filter is effective in reducing excess total dissolved solids (TDS) from drinking water. All other physical parameters found to be within the prescribed limit. It can give iron free water with output capacity of 25L/hr. The added advantage of the unit is the provision for back washing of the filter media and collection point of the precipitated iron at the lower bottom of the tank for safe discharge.
Implementação do serviço de teleconsulta farmacêutica para pessoas com diabetes mellitus: foco no autocuidado apoiado
Authors: QUEIROZ REIJANE MARA PINHEIRO , Pessoa Nívia Tavares , Romero Nirla Rodrigues , Fonteles Marta Maria de França
Published: February 2022

No atual cenário da pandemia da Covid-19, pessoas com diabetes mellitus (DM) requerem, além dos cuidados médicos contínuos, com estratégias multifatoriais de redução de risco, a aproximação de profissionais de saúde capacitados para o apoio ao autocuidado, mesmo que de forma remota. Objetivou-se Implementar o serviço de teleacompanhamento farmacêutico, no contexto da Telessaúde, para prestação do autocuidado apoiado em pessoas com DM na pandemia da covid-19. A população envolvida foi  formada por pessoas com DM tipo 2 que apresentavam hemoglobina glicada ≥ 9,0% e que estavam dispostas a participar do acompanhamento por telefone com um farmacêutico da Central de Medicamentos dos  terminais de ônibus (CDMT) do município de Fortaleza. Para iniciar a realização do acompanhamento era lido o Termo de Consentimento Livre e Esclarecido (TCLE). A primeira fase do projeto de implementação do serviço foi a capacitação dos profissionais farmacêuticos, seguida da estruturação de um formulário para acompanhamento de pessoas com DM de forma remota, facilitando a identificação de indicadores de processo e de resultados clínicos no contexto do autocuidado apoiado. Entender e conhecer a realidade e o comportamento, auxiliando no processo do cuidado de pessoas com DM com alto risco, por meio de uma tecnologia de fácil acesso como o telefone, foi de valia, servindo de modelo para estender o atendimento a outras pessoas de forma a envolver mais farmacêuticos e outros profissionais, caracterizando assim um serviço multiprofissional dentro do Sistema Único de Saúde (SUS).
Atuação do farmacêutico técnico de saúde mental durante a pandemia da COVID-19
Authors: Araújo Gilmar da Silva
Published: February 2022

O cuidado farmacêutico tem se tornado prática contínua na saúde e o Centro de Atenção Psicossocial (Caps) é um instrumento onde o profissional tem desenvolvido suas atribuições. O presente trabalho tem como objetivoapresentar ações do farmacêutico à população do território de Ermelino Matarazzo, localizado na região da zona leste do município de São Paulo, nas quais foram ofertados cuidados aos que mais sofreram com os impactostrazidos pela pandemia da Covid-19. Sendo assim, a metodologia utilizada foi um relato dessas ações desenvolvidas pelo farmacêutico junto à equipe multiprofissional do Caps-IJ II Ermelino Matarazzo, entre as quais: visitase atendimentos domiciliares aos usuários, oferta de água e sabão para higienização das mãos e orientações à população do bairro. Tais ações e atribuições do profissional tiveram impactos no levantamento da produçãode dois procedimentos: visitas/atendimentos domiciliares e reuniões de matriciamento, ocorrendo um aumento progressivo dos números das ações quando comparados os anos de 2019, 2020 e 2021. Nos dois últimosanos, com a pandemia decretada, as práticas de cuidados foram repensadas. Além dos ganhos quantitativos, apareceram os qualitativos, por meio de relatos dos usuários em suas mudanças de rotinas e acesso e adesão às terapias. Conclui-se que, para que as práticas dos cuidados farmacêuticos em saúde mental se concretizem, faz-se necessário o apoio da gestão com redistribuição das atribuições e agendas, sensibilização da população e outros serviços da rede intersetorial, como forma de estímulo ao profissional.
Dispensação Trimestral de Anastrozol e Tamoxifeno durante a pandemia de COVID-19
Authors: Oliveira Juliana dos Santos de , Valverde Ingrid Ambrosio Pires Morais , Rodolpho Patricia Silva Novaes
Published: February 2022

No câncer de mama, a hormonioterapia é utilizada para reduzir o risco de recidiva (reaparecimento da doença ou de sintomas), para tratar a recidiva ou casos avançados. O tempo de tratamento varia de 5 a 10 anos. A atual pandemia da Covid-19 trouxe a preocupação de diminuir o risco de infecção em pacientes oncológicos em uso de hormonioterapia. Além disso, o medo por parte dos pacientes de comparecerem ao ambiente hospitalar poderia prejudicar sua adesão ao tratamento. O objetivo deste trabalho foi reduzir a média diária de atendimentos a pacientes em uso de hormonioterapia no serviço de oncologia, diminuindo riscos de exposição à Covid-19. Foi utilizada a dispensação trimestral de Anastrozol e Tamoxifeno para os pacientes, com exceção dos que estavam iniciando o tratamento. A dispensação trimestral foi implantada em março de 2020, gerando uma redução já significativa, em abril de 2020, de quase 30% no número de pacientes que compareceram ao hospital para retirada desses medicamentos, quando comparado ao mês anterior (março n = 226; abril n = 167). Em maio e junho de 2020, houve uma queda de mais de 80% de pacientes que foram ao serviço retirar a hormonioterapia, evitando aglomerações e reduzindo o risco de contágio. Foi possível concluir, com o desenvolvimento desse trabalho, que o papel do farmacêutico, durante situações de pandemia, vai muito além de suas atividades clínicas. A visão de logística e planejamento desse profissional auxiliaram na redução de risco de infecção pelo novo coronavírus dos pacientes oncológicos e possibilitaram a continuidade do tratamento.
Enfrentamento à Covid-19: cuidando do cuidador com PICs
Authors: De Donato Aline Corazza , Heyn Regina Célia de Camargo
Published: February 2022

As Práticas Integrativas e Complementares em Saúde (PICS) atuam na prevenção e tratamento de saúde, trazendo ganhos significativos para a saúde pública. Importante que o profissional da saúde conheça suas atribuições, mas conheça a si próprio para que desenvolva um bom trabalho e não seja prejudicado por desgastes físicos ou emocionais, impactando na qualidade do cuidado prestado ao usuário do serviço de saúde. Os trabalhadores vinham demonstrando a necessidade de um espaço de escuta para expressarem o que sentiam em relação a si e ao trabalho, tornando-se mais evidente pelo aumento da ansiedade e preocupação entre eles, durante a pandemia da Covid-19. O projeto piloto foi realizado no período de 12/08/2020 à 16/12/2020, no Caps III Rudge Ramos, em São Bernardo do Campo, São Paulo. Neste projeto, intitulado Cuidando do Cuidador com PICS nas Residências Terapêuticas, a farmacêutica e a monitora de oficina terapêutica II ofereceram tratamento complementar de caráter integral aos 23 participantes, em seis encontros quinzenais, utilizando a aromaterapia,arteterapia, cromoterapia, dança circular, musicoterapia e práticas meditativas. Os objetivos foram oferecer aos cuidadores um espaço de apoio, expressão, escuta e troca de experiências; proporcionar reflexão e possibilidade de mudança na maneira de enfrentar as dificuldades do dia a dia, visando restabelecer o equilíbrio e o bem-estar físico, mental, emocional com oportunidade de diminuição dos sintomas ansiosos e de melhoria nas funções laborais. Dos 23 envolvidos no projeto, apenas cinco participaram do último encontro e outros cinco não conseguiram comparecer, mas preencheram a ficha de avaliação final. Importante pontuar que apenas 4% dos participantes do projeto tinham conhecimento sobre as práticas integrativas e complementares. Assim, um dos benefícios evidenciados foi informar e divulgar as PICS. Os participantes compartilharam percepções relacionadas à mudança na rotina de trabalho e a experiência positiva ao final do projeto Cuidando do Cuidador com as PICS.
Multi-Scale Paraxial Models to Approximate Vlasov–Maxwell Equations
Authors: Assous Franck , Furman Yevgeni
Published: February 2022

Even today, solving numerically the time-dependent Vlasov–Maxwell equations is a challenging issue, and developing simpler but accurate approximate models is still worthwhile.
Here, we propose a new family of paraxial asymptotic models that approximates the Vlasov–Maxwell system of equations.
We introduce parameters in our models that allow us to handle relativistic cases, much slower beams or even non-relativistic cases.
These models are derived by introducing a small parameter and provide static or quasi-static approximate equations that are 𝑛-th order accurate; 𝑛 may be chosen as required.
Practically, one can select a model by determining the regime one is interested in and choosing the degree of accuracy needed.
Challenges in decolonizing linguistics: the politics of enregisterment and the divergent uptakes of translingualism
Authors: Canagarajah Suresh
Published: February 2022

This article traces the roots of translingualism in the Global South, with particular relevance to the author’s South Asian heritage. After narrating his attempts to practice this orientation in his research and scholarship, the author analyzes the problematic ways in which translingualism is appropriated in the academic, economic, and political contexts in Global North. Employing the conceptual orientation of enregisterment, the article theorizes the challenges for decolonizing discourses in negotiating a critical and transformative uptake. It concludes by outlining some strategies that can help in entextualizing translingualism to preserve its decolonizing potential. It identifies areas of research that will expand the communities, contexts, and communication that will facilitate more pluriversal epistemologies and practices.
Translanguaging and flows: towards an alternative conceptual model
Authors: Lemke Jay L. , Lin Angel M. Y.
Published: February 2022

While much scholarly work has contributed to the theorizing of translanguaging, in this article, we sketch an alternative model based on materiality and information theory (Bateson, Gregory. 1951. Information and codification; and Conventions of Communication. In Jurgen Ruesch & Gregory Bateson (eds.), Communication: The social matrix of psychiatry, 168–227. New York: Routledge; Lemke, Jay L. 2015. Feeling and meaning: A unitary bio-semiotic account. In Peter Pericles Trifonas (ed.), International handbook of semiotics, 589–616. Dordrecht, the Netherlands: Springer) to theorize translanguaging together with flows, through reconsidering issues of speech events in which features normally associated with different language systems co-occur. And in doing so, we hope to contribute to the ongoing theorizing work in the field of translanguaging.
Chitosan-based antioxidant films incorporated with root extract of Aralia continentalis Kitagawa for active food packaging applications
Authors: Wu Shuqing , Li Guoping , Li Bosheng , Duan Hongmei
Published: February 2022

Aralia continentalis Kitagawa and ginseng are both perennial herbs of Araliaceae. The study aimed to investigate the composite packaging films with better fresh-keeping ability. The different mass concentrations of Aralia continentalis Kitagawa root extract (ARE) 0.05%, 0.10%, and 0.15% (v/w) were compounded with chitosan (CH) to make composite packaging films. Food-based composite film, its thickness, density, water contact angle (WCA), oxygen barrier properties (OP), solubility, swelling, transparency, water vapor permeability (WVP), and other physical properties, as well as tensile strength (TS), elongation at break (EAB), Young’s modulus (YM), and the mechanical properties were measured, and the oxidation resistance, thermal properties, and biodegradability were also evaluated, and the structure was analyzed by infrared spectroscopy. The results showed that when the ARE content in the film was increased from 0.05 to 0.15 mg·mL−1, high antioxidant capacity of the CH/ARE film was exhibited (the DPPH and ABTS+ free radical scavenging rate was increased), and the thickness, density, swelling degree, solubility, TS, EAB, and YM of the CH/ARE composite film increased, while WCA, OP, WVP, transparency, and biodegradability were slightly reduced. We had noticed that with the increase in the ARE content, the surface microstructure in CH/ARE film changed significantly, indicating the good compatibility between CH and ARE. In summary, as a natural active substance, ARE can be combined with CH to form films, and the packaging film made can effectively improve the performance of the composite film.
Molecular dynamics simulation of nonisothermal crystallization of a single polyethylene chain and short polyethylene chains based on OPLS force field
Authors: Lv Yunlong , Ruan Chunlei
Published: February 2022

Molecular dynamics simulations on the nonisothermal crystallization of a single polyethylene chain and short polyethylene chains based on the all-atom model and optimized potentials for liquid simulations-all atom (OPLS-AA) force field are conducted in this article. Four all-atom single chain models with different chain lengths (C1000, C2000, C3000, and C4000) and four all-atom short chain models with the same chain length and different number of chains (2C500, 4C500, 6C500, and 8C500) are constructed. The collapse process at a high temperature of 600 K and the nonisothermal crystallization process with different cooling rates at the temperature range of 600–300 K are simulated. Roles of chain length, number of chains, cooling rate on the potential energy, van der Waals (V
dw) energy, radius of gyration, root mean square deviation, and crystallinity are explored. By comparing with the existing results obtained by the united atom model, the validity and accuracy of this study are proved. Results show that in the collapse process, the chain length is the major factor, whereas the cooling rate has the greatest influence during the nonisothermal crystallization process. As the cooling rate decreases, a “platform” appeared in the V
dw energy curve, which has a profound impact on the crystallization.
Shape memory polymer/graphene nanocomposites: State-of-the-art
Authors: Kausar Ayesha
Published: February 2022

Graphene is one of most exceptional type of nanocarbon. It is a two-dimensional, one atom thick, nanosheet of sp2 hybridized carbon atoms. Graphene has been employed as nanofiller for shape memory polymeric nanocomposites due to outstanding electrical conductivity, mechanical strength, flexibility, and thermal stability characteristics. Consequently, graphene nanostructures have been reinforced in the polymer matrices to attain superior structural, physical, and shape recovery properties. This review basically addresses the important class of shape memory polymer (SMP)/graphene nanocomposites. This assessment is revolutionary to portray the scientific development and advancement in the field of polymer and graphene-based shape memory nanocomposites. In SMP/graphene nanocomposites, polymer shape has been fixed at above transition temperature and then converted to memorized shape through desired external stimuli. Presence of graphene has caused fast switching of temporary shape to original shape in polymer/graphene nanocomposites. In this regard, better graphene dispersion, interactions between matrix-nanofiller, and well-matched interface formation leading to high performance stimuli-responsive graphene derived nanocomposites, have been described. Incidentally, the fabrication, properties, actuation ways, and relevance of the SMP/graphene nanocomposite have been discussed here. The potential applications of these materials have been perceived for the aerospace/automotive components, self-healing nanocomposites, textiles, civil engineering, and biomaterials.
Athenian Black-Figure and Red-Figure Pointed Amphoras: New Considerations on Their Shape, Decoration, and Context
Authors: Zaccagnino Cristiana
Published: February 2022

Fewer than 20 Athenian figured pointed amphoras are attested, dating from the late sixth century to the mid-fifth century B.C.E. in both black- and red-figure. There is strong variability in the shape of these vases, even those produced in the same workshop, making them almost unique specimens. Their shape is clearly modeled after transport amphoras of the same period. This paper aims to argue that Athenian figured pointed amphoras were produced in small numbers as special commissions for members of the aristocracy. In addition to their content, arguably high-quality wine, these luxury versions of regular wine shipping containers may have been intended as gifts to guest-friends and members of the givers’ broad elite network, mainly in Etruria.
Synthesis and characterization of Ce-doped TiO2 nanoparticles and their enhanced anticancer activity in Y79 retinoblastoma cancer cells
Authors: Kartha Balachandran , Thanikachalam Kalaivani , Vijayakumar Natesan , Alharbi Naiyf S. , Kadaikunnan Shine , Khaled Jamal M. , Gopinath Kasi , Govindarajan Marimuthu
Published: February 2022

Rare earth metal cerium-doped titania nanoparticles (titanium dioxide [TiO2]) were produced utilizing a low-cost and straightforward sol–gel technique, and its enhanced photodynamic anticancer activity was tested on Y79 retinoblastoma cancer cells. The structural, optical, morphological, anticancer activity, and cytotoxicity of pure and cerium-doped TiO2 (Ce-doped TiO2) were investigated. In X-ray diffraction (XRD) measurements, apparent doping of cerium in TiO2 was detected, with reported anatase patterns shifting toward a lower angle in the anatase structure. Raman spectra verify the presence of cerium doping in TiO2 by revealing greater wave number shifting. The scanning electron microscope (SEM) and transmission electron microscope (TEM) analysis showed that the synthesized TiO2 and Ce-doped TiO2 nearly spherical. TiO2 and Ce-doped TiO2 were studied for their photodynamic anticancer activities, and the results suggest that cerium doping in TiO2 improves anticancer activity.
Quantum chemical calculations of phenazine-based organic dyes in dye-sensitized solar cells
Authors: Yigit Nesim , Turhan Zeynep Şilan
Published: February 2022

In this study, quantum chemical calculations of phenazine-based organic molecules applied in organic dye-sensitized solar cells (DSSCs) have been made and interpreted. Since DSSC molecules work with the electron push–pull system, the sequence of other compounds (2–8) from compound 1 is designed as a donor–π bridge (weak acceptor)–acceptor (D–π–A). Later, the studied molecules were expanded from 2a to 8c by lengthening the conjugation with phenyl, thiophene, and furan to the acceptor parts. Density functional theory (DFT) and time-dependent density functional theory (TD-DFT) calculations are practiced to investigate all structures and absorption spectra of molecules, respectively. It has been observed that the phenazine-based molecule series are good candidates for DSSCs, both with their band gap and their absorption spectrum results. It can be assumed that changing the HOMO and LUMO energy values of all designed structures according to compound 1 can absorb light in the organic dye-sensitized solar cells and transfer electrons to the conductivity band of TiO2. As a result, it has been resolved that various dyes can be designed for dye-sensitizing solar cells by calculating electronic energies, HOMO–LUMO energies, and absorption wavelengths.
Specific gravity of slash, longleaf, and loblolly pine growth rings formed in mature trees during periods of drought
Authors: Eberhardt Thomas L. , Samuelson Lisa J.
Published: February 2022

Studies linking wood properties of the southern pines to climate parameters and/or irrigation treatments have generally used seedlings or mid-rotation age trees, the latter comprised primarily of juvenile wood. To investigate possible drought-induced effects on mature wood physical properties, densitometry data from 50-year-old slash (Pinus elliottii Engelm.), longleaf (Pinus palustris Mill.), and loblolly (taeda L.) pine trees were matched with annual soil moisture values. Each of two growth ring groupings per increment core had a two-year period of ample moisture followed by a two-year period of drought; these were centered at ages of 20 and 38 years. For slash pine, the latewood width was 30% lower (p = 0.011) for the drought period at age 20. Seemingly similar results were obtained for longleaf pine, but the probability (p = 0.051) just exceeded the threshold for significance (α = 0.05). No differences were observed for either earlywood or total ring widths. Ring specific gravity (SG) values that were 11% lower for slash pine and 7% lower for longleaf pine can be attributed to drought-related reductions in latewood formation. Unlike other studies with younger trees, both percent latewood and ring SG values for mature loblolly pine were unaffected by drought.
Properties of Mexican bloodwood (Haematoxylum campechianum L.). Part 2: moisture performance and biological durability
Authors: Brischke Christian , Emmerich Lukas , Koddenberg Tim , Kick Annika E. B.
Published: February 2022

Haematoxylum campechianum is most prevalently used as dyewood; its use for furniture, flooring, or fencing is only of regional importance, which might be due to lacking data about its technological properties. Therefore, small specimens were cut from H. campechianum stems from plantations in the lowlands of the Usumacinta delta in Mexico. The latter were subjected to laboratory decay and moisture studies. Water vapour sorption, liquid water uptake, and swelling of H. campechianum appeared much lower in comparison with most European grown wood species and similar to tropical hardwoods such as Tectona grandis. After removal of water-soluble ingredients, water vapour sorption of H. campechianum specimens further decreased, which assigned such ingredients a somewhat hydrophilic character. Mean mass losses (ML) due to decay by white, brown, and soft rot fungi in laboratory tests were <5%. On the basis of a dose-response model, wetting ability factors and ML values from decay tests predicted an outdoor performance similar to T. grandis and Intsia bijuga. Based on this preliminary property profile, H. campechianum can be recommended for both outdoor (e.g. fencing, outdoor decking, railing) and indoor applications (e.g. flooring, manufacturing of furniture, wall and ceiling panels, decoration artwork).
Ficus glumosa Del. reduces phenylhydrazine-induced hemolytic anaemia and hepatic damage in Wistar rats
Authors: Okafor Azubuike Ikechukwu , Atsu Cecilia Ushike
Published: February 2022

Objectives

Anemia is a direct or indirect consequence of oxidative stress via free radicals on erythrocytes and subsequently on other tissues like liver. Ficus glumosa constitute a rich pharmacologically compound that can prevent or repair oxidative damage. Therefore, this study seeks to evaluate the effect of F. glumosa on phenylhydrazine-induced hemolytic anemia and hepatic damage in rats.

Methods

Twenty-four (24) albino Wistar rats were assigned to four (4) experimental groups (n=6) as follows: Group I (non-anemic control) and Group 2 (anemic control) received normal saline, while Group III and IV (test groups) 200 and 400 mg/kg of aqueous leaf extract of F. glumosa (ALEFG), respectively. All the groups were treated orally (via a cannula) for seven consecutive days. Intraperitoneal (IP) injection of phenylhydrazine (PHZ) at 40 mg/kg for two consecutive days induced hemolytic anemia in group II to IV before treatment. Rats of all groups were anaesthetized and sacrificed 24 h after the last treatment. Blood and liver samples were collected for some hematological indices, liver function test, antioxidant parameter and histological analysis.

Results

The LD50 of ALEFG was assessed orally in rats and found to be above 5,000 mg/kg body weight. Significant (p<0.05) decreases in the level of red blood cell (RBC), hemoglobin (HGB) concentrations and packed cell volume (PCV) by 50% after 2 days of PHZ induction, were attenuated by more than 50% after 7 days administration of ALEFG at 200 and 400 mg/kg. The percentage change in body weight increased significantly (p<0.05) after 7 days post PHZ-induced anemia, but those that received oral administration of ALEFG (at 200 and 400 mg/kg) for 7 days increased significantly (p<0.05) by more than 2%, dose-dependently compared to anemic untreated group. Increased level of serum ALT, AST, ALP and GGT in PHZ-induced anemic animals, were significantly (p<0.05) attenuated in the groups that received oral administration of ALEFG (at 200 and 400 mg/kg) for 7 days. Decreased level of catalase (CAT) and superoxide dismutase (SOD) activities with concomitant increase in malondialdehyde (MDA) content from PHZ-induced untreated group, were significantly (p<0.05) mitigated in the rats that received oral administration of ALEFG (at 200 and 400 mg/kg) for 7 days. Histopathological analysis showed that ALEFG could remarkably though not completely mitigated PHZ-induced hepatic damage.

Conclusions

Our data suggests that the leaves of F. glumosa contain important antioxidant(s) that could effectively reduce hemolytic anemia and hepatic damage, especially during phenylhydrazine-induced toxicity.
Comparison of compliance and outcomes in adolescents with type 1 diabetes mellitus attending a co-located pediatric and transition diabetes service
Authors: Ali Naushad , Longson Julie , Myszka Rickie , Park Kris , Low Gary K. K. , Leong Gary M. , Bhurawala Habib , Liu Anthony
Published: February 2022

Objectives

Adolescence is a challenging period for diabetes management, particularly when transitioning to adult care. There are reports highlighting concerns that transition to adult care may lead to poor glycemic control and clinic engagement. Our aim was to determine if a co-located pediatric and transition diabetes service would lead to better transition outcomes.

Methods

A retrospective medical records review was conducted on patients with type 1 diabetes attending a transition clinic in a metropolitan teaching hospital in Sydney, Australia. Patients referred from the hospital’s co-located pediatric diabetes clinic to the transition clinic were compared to those referred from external sources regarding important clinical outcomes such as glycosylated haemoglobin (HbA1c), clinic attendances, and complication rates between referral sources. Confounders such as age, gender, duration of diabetes and socioeconomic status were considered.

Results

Data was collected from 356 patients of which 121 patients were referred from the co-located pediatric diabetes clinic (IRG) and 235 patients from external sources (ERG). Improvements in HbA1c were only seen in the ERG at 6 and 12 months (p<0.001). Altogether 93% attended one or more medical appointments in the IRG compared to 83% in the ERG (p=0.03). There were more admissions for acute diabetes complications (17 vs. 8%, p=0.01) and more microvascular complications (20 vs. 9%, p<0.01) in the IRG vs. ERG group.

Conclusions

Although co-location of a pediatric and transition clinic improved medical engagement, this did not equate to better glycemic control or complication rates. Further research is warranted to determine what other strategies are required to optimise the transition process in diabetes care.
Atypical symptoms of malignant hyperthermia: A rare causative mutation in the RYR1 gene
Authors: Wang Qiao Ling , Fang Yu , Jin Shuo Guo , Liang Jing Tao , Ren Yi Feng
Published: February 2022

Malignant hyperthermia (MH) is an autosomal dominant genetic condition of the skeletal muscle triggered by inhaled general anesthetic agents or succinylcholine and associated with a hypermetabolic state and skeletal muscle rigidity. Tachycardia, increased carbon dioxide production, hypercarbia, hyperthermia, acidosis, hyperkalemia, cardiac arrhythmias, muscle rigidity, and rhabdomyolysis are common symptoms of MH. As the progression of the syndrome could be rapid or less evident, even experienced physicians have difficulty in diagnosing MH, which can lead to delays in treatment and increased mortality. We report a rare case of a 36-year-old man, who underwent open reduction and internal fixation of the left clavicle after inhaled anesthetics. The patient developed dyspnea, hypotension, unremitting hyperthermia, tachycardia, and elevated serum myoglobin, and finally died of pyemia and disseminated intravascular coagulation. We reviewed the process of disease development, summarized the steps of diagnosis, and improved genetic testing. Exome sequencing revealed a new mutation c.8519G>A (p.arg2840 GLN) in the RYR1 gene that could be associated with MH. The gene mutation was also found in his daughter’s genetic test. This case emphasized the importance of the awareness of MH and its atypical clinical symptoms. The presence of dyspnea, hypotension, unremitting hyperthermia, tachycardia, and raised myoglobin in serum might further strengthen the clinical diagnosis of suspected MH.
Study on fault identification of mechanical dynamic nonlinear transmission system
Authors: Guo Erfu , Jagota Vishal , Makhatha Mamookho Elizabeth , Kumar Pawan
Published: February 2022

To solve the problems of large mechanical powertrain such as complex structure, serious accident, strong nonlinear characteristics of running state, bad operating environment, non-Gaussian noise, and various uncertain factors, it is difficult to make an accurate fault diagnosis. This paper proposes a method for dealing with nonlinear characteristics using nuclear waves, as well as a system, deeply conducted nuclear base fault feature extraction, classification, and decision making, such as nuclear base state trend prediction technology research, focusing on exploring and improving the accuracy of fault diagnosis under nonlinear conditions, technical method, and way to state prediction accuracy. It offers effective technical assistance for the advancement and use of mechanical power train monitoring and diagnosis technology. A fault detection method based on kernel method is proposed. Based on the characteristics of this method in dealing with nonlinear problems, the research on kernel feature extraction, kernel fault classification and decision making, and kernel state trend prediction are carried out systematically. The experimental results show that the simulation analysis of typical chaotic time series prediction and the application of the operation state prediction of a certain ship main steam turbine unit have achieved good results, among which the average relative error of the single-step prediction of the unit state is 1.7881%, and the average relative error of the 30-step prediction is 3.3983%. Proved that the nuclear methods systematically applied to mechanical power transmission system fault diagnosis and state prediction, effectively enhancing some traditional methods and techniques dealing with nonlinear feature extraction, the nonlinear prediction capability for fault identification, and nonlinear state, to deal with nonlinear fault diagnosis problems of engineering practice, a large number of explored effective solution.
Research on logistics management layout optimization and real-time application based on nonlinear programming
Authors: Zhang Yanqi , Kou Xiaofei , Song Zhigang , Fan Yuqing , Usman Mohammed , Jagota Vishal
Published: February 2022

To solve the problem of long logistics delivery time in supply chain, a Mixed Integer Non-linear Program (MINLP) model is built by using Mixed Integer nonlinear programming theory. Firstly, the General algebraic modeling system (GAMS) is used to build the model to fully integrate each parameter of logistics transportation, the total distribution time of the supply chain network, the coverage radius of the logistics base, the number of users, the total capacity of the logistics base, the mode of railway and road transportation, the nonlinear programming model is built and solved by DICOPT solver in GAMS. The cost of logistics can be decreased, transportation time can be reduced, and the logistics system's operating efficiency can be increased in the long term with the help of this algorithm. The proper operation of the logistics system is critical in encouraging the supply chain circulation of various industries and has a direct impact on the society's economic development. The optimal logistics distribution plan with 5 logistics bases covered users of 18 and railway capacity of 2. With the same railway capacity and the same total budget, the larger the number of covered users, the greater the total distribution time increases, but the larger the total budget, the growth of the total distribution time slows down significantly. Experiments show that MINLP model can solve the problem of logistics-based layout optimization in nonlinear logistics management.
Numerical and experimental analysis of the cavitation and study of flow characteristics in ball valve
Authors: Yousaf Bilal , Qaisrani Mumtaz A. , Ijaz Khan Muhammad , Sana Ullah Sahar Muhammad , Tahir Waqas
Published: February 2022

Cavitation in ball valve was numerically investigated using Computational Fluid Dynamics (CFD) modeling and then validated against results gained through experiments. The experiment was carried out in an assembly unit of the automotive industry to analyze flow patterns. The effect of bubbles on other thermophysical properties of the fluid was also examined using the multiphasek-ϵviscous model in ANSYS FLUENT. The impact of changes in inlet pressure on vapor fraction was visualized through simulations and validated against experimental data, cavitation was calculated via cavitation index equation. It was observed that cavitation values ranged from 0.51 to 0.84 through computational fluid dynamics and from 0.46 to 0.80 in the experiment. Moreover, fluctuations in Turbulence Kinetic Energy (TKE) in the fluid through the boundary layers in the valve region, deformation in fluid particles in the form of Strain Rate (SR), and variations in the value of Wall Shear Stress (WSS) of the valve's internal walls were also studied through numerical simulations. The results show the pressure just before the valve drops and result in cavitation. Besides, turbulence kinetic energy, shear stress on the walls of a valve, strain rate, and fluid velocity were gradually increased at inlet pressure resulting erosion in the ball valve.
Bulking of cellulose fibres – a review
Authors: Lindström Tom , Ström Göran
Published: February 2022

This paper summarizes chemical technologies aimed at making bulking fibres, a technology mainly practiced in the area of tissue and hygiene products but also highly relevant for board products made by sheet stratification containing bulking layers in the middle of the board in order to improve the bending stiffness of the board. There is a long history of different ways to make bulking fibres albeit the fact that such technologies have scarcely been used for commercial stratified board (apart from a variety of different pulp types), but more in tissue and hygiene products. The objective is to review the very different approaches that may be used for the purpose of making bulking fibres.
Test influence of screen thickness on double-N six-light-screen sky screen target
Authors: Li Hai , Ni Jinping , Yang Xiaodong , Dong Qunfeng
Published: February 2022

In this article, a new method for processing trajectory parameter tests of flying targets with the geometric center of the screen as the response time of the detector is proposed. The superiority of this method over the conventional method for uniform thickness treatment is shown through the error and data analysis of the yaw angle, pitch angle, and flying speed. The relative distance between the test track and the real track shows the accuracy of the new method. The obvious statistical rules can be found for the errors of test parameters, which is conducive to the test research of random and violent vibrations of the target surface.
Co-transport of bentonite colloid and U(VI) in particulate granite column: role of colloid concentration, ionic strength, pH and flow rate
Authors: Zhang Zhen , Heng Jiaxi , Jin Qiang , Chen Zongyuan , Wu Wangsuo , Guo Zhijun
Published: February 2022

China is considering Beishan granitic formation (Gansu Province, China) as the site for high-level radioactive waste (HLW) repositories. Thus, it is crucial to understand the transport behavior of radionuclide in Beishan granitic media under disposal conditions. In this context, the co-transport of U(VI) (as the representative of radionuclides) and bentonite colloid (BC, from erosion of compacted bentonite) in particulate Beishan granite was studied as a function of important in-situ factors, such as BC concentration, ionic strength, pH and flow rate. We found that the increase of BC concentration (BC = 240–480 mg/L) did not affect the transport of individual BC, whereas it significantly facilitated the transport of U(VI). The increase of ionic strength (I = 0.001–0.01 M NaCl) or decrease of pH (pH = 7.50–5.40) obviously inhibited the BC transport, where these inhibiting effects were relatively slight for the transport of U(VI). The increase of flow rate significantly facilitated both the transport of BC and U(VI). Finally, a two-site kinetic attachment/detachment model was applied to describe the breakthrough curves of individual and co-transport of BC. The experimental and modeling results of this study have a significant implication on the safety assessment of HLW repositories built in granitic formation.
Proximization: a critical cognitive analysis of health security discourse
Authors: Li Ke , Gong Xiaonan
Published: February 2022

With the surge of global health threats, “health security” constitutes a large proportion of international security. Drawing on proximization theory, the study aims to reveal how proximization serves to legitimize health emergency measures based on a case study of U.S. policies on travel restrictions amid the COVID-19 pandemic. The study annotated and counted the lexico-grammatical items identified as proximization triggers in terms of space, time, and axiology based on the data from a corpus of approximately 60,237 tokens. An attempt is then made for a critical cognitive analysis of health security discourse, indicating that proximization facilitates the legitimization of travel restrictions through the construction of threats, both synchronically and diachronically. Furthermore, the results suggest that the proximization approach is suited to the analysis of health security discourse. Notably, this study may shed new light on research into state politics, crisis management, and international security.
Agency and responsibility in environmental reporting in the Chinese press: a corpus-based diachronic analysis
Authors: Wei Ruby Rong
Published: February 2022

This article presents the findings of a corpus-based diachronic discourse study of the representations of the causes of and solutions to China’s air pollution in the official Chinese English-language China Daily (2008–2018) with a view to exploring agency for both causal responsibility and treatment responsibility. The findings reveal that greater prominence is given to treatment responsibility than to causal responsibility. Causal responsibility is mainly attributed to no agents or to physical agents, while treatment responsibility is chiefly assigned to social agents. In addition, a transitivity analysis shows that causer agents are primarily represented by Actors in material processes and Tokens in relational processes, whereas solver agents are principally represented by Actors in material processes, Tokens and Carriers in relational processes, Sensers in mental processes, and Sayers in verbal processes. It is argued that these linguistic features are linked to socio-political factors within which the press operates.
(Des)Avanços: legislação antirracista e sua aplicação
Authors: LIMA R. M. , MUSARRA Raíssa M. L. M.
Published: February 2022

The anti-racist struggle in Brazil has experienced an endless dispute among narratives, confronting obsta-cles in the legal field impeding its implementation and effectiveness. The entire dispute interferes with the country’s ability to solidify the Right to Equality stated in the Constitution of the Federal Republic of Brazil. With the aim of contributing to the debate on the matter of the effectiveness of the anti-racist struggle, this article provides reflections on its paths and setbacks in the legislative sphere, its application in the courts, and the perpetuation of racist practices in the building of the collective conscience by means of the media and social practices by way of “humor”.