bluuebunny/crossref_metadata_2025 huggingface dataset:
Progression des apprentissages dans l’acquisition de savoirs nécessaires à l’improvisation au clavier : le cas de Il Transilvano (1593-1609) de Girolamo Diruta
Authors: Falcone Fabio Antonio
Published: May 2024

À travers l’analyse didactique de Il Transilvano (1593-1609) de Girolamo Diruta, cet article se propose de déterminer et de décrire la nature des savoirs mis à l’étude pour la construction de l’expertise en improvisation au clavier. Dans le but de saisir le projet didactique sous-jacent à la méthode pédagogique de Diruta, il s’agira ici d’interroger la conduite de la progression mise en place par l’auteur pour la construction de ces savoirs. L’hypothèse posée est que les savoirs savants sous-jacents aux pratiques étaient construits autour d’un corpus restreint de contenus noyaux, notamment les notions de consonance et de dissonance, de diminution et de mouvements. Ce à travers l’organisation, par le maître, de dispositifs didactiques divers visant l’appropriation, par l’élève de contenus d’enseignement et l’installation d’une mémoire du système didactique (Centeno 1995) qui permette à l’élève de construire de nouveaux savoirs à partir de « savoirs en train de se faire » (Centeno 1995, 135). Il en résulte une progression des apprentissages caractérisée par des éléments de gradualité — en l’espèce, donnée par une complexification du milieu (Brousseau 1998) au fur et à mesure que l’on progresse dans le traité, ce qui induit une prise de responsabilité croissante de l’élève dans la construction de l’expertise en improvisation. En outre, cette progression fait l’objet d’introductions d’éléments complémentaires, porteurs de contradictions apparentes dans la réalisation de la tâche. Plus précisément, ces éléments complémentaires sont liés aux différents genres musicaux présentés par Diruta, qui exigent une modification de la stratégie de résolution sans que les savoirs savants soient toujours explicités à l’avance dans la définition de la tâche proposée par le maître.
Quantitative indicators of the training of cadets of the Irkutsk Fire Technical School in 1968-1993.
Authors: Baranovskii Andrei Valer'evich
Published: May 2024

The subject of the research of the scientific article is the peculiarities of the process of training firefighters on the basis of the Irkutsk Fire Technical School of the Ministry of Internal Affairs of the USSR during the period of activity of this educational institution from 1968 to 1993 on the territory of the Irkutsk region. In this publication, on the basis of previously unpublished and not introduced into scientific circulation archival materials, historical data on quantitative changes in the recruitment and training of cadets of the Irkutsk Fire Technical School during the period of their educational activities are investigated. The author considers the issues of organizing entry examinations for incoming applicants, notes significant events in the educational activities of cadets, and summarizes data on the number of specialists who have completed training. The article identifies the features of the educational process on the basis of the school, which allowed the formation of a professional staff of firefighters in the regions of Siberia and the Far East.  The research methodology includes a concrete historical approach (M.V. Astakhov, I.D. Kovalchenko, V.F. Kolomiytsev, A.P. Pronstein, etc.), as well as generalization, comparison, synthesis, classification, concretization; analysis of archival documents, legislation and scientific literature; retrospective analysis; method of historical analogies. The novelty of this scientific article lies in the fact that during the scientific research, historical and pedagogical sources, archival data describing in detail the history of the formation and development of the cadet recruitment structure of the school, as well as a detailed report on the quantitative and qualitative indicators of graduates of the fire school by year of graduation were identified and summarized. The conducted research is of interest to a wide range of readers, since the study of the educational activities of the school, structural and organizational measures for the recruitment and graduation of firefighters is a very important component in the study of the formation and development of departmental education of the Ministry of Internal Affairs of the USSR in the territory of the Baikal region in the XX century. The list of heads of these structural divisions at the stage of formation and development of the Irkutsk Fire Technical School of the Ministry of Internal Affairs of the USSR is considered.
Correlação entre os fatores de risco cardíaco pós-operatórios, funcionalidade e tempo de internação
Authors: Nascimento Micaele Farias , York Beatriz Souza de Albuquerque Cacique New , Oliveira Milton Antônio Gonçalves de , Galdino Kátia Elizabete , Souza Iara Tainá Cordeiro de , Fernandes Ana Tereza do Nascimento Sales Figueiredo
Published: May 2024

Introdução: A cirurgia cardíaca (CC) pode estar associada a diversas repercussões orgânicas responsáveis pelo surgimento de fatores de risco cardíaco no pós-operatório. Estas, associadas ao tempo de internação hospitalar (TIH) prolongado, podem desencadear manifestações críticas em indivíduos submetidos a esse procedimento cirúrgico. Objetivo: Investigar a correlação entre os fatores de risco cardíaco pós-operatórios em CC, funcionalidade e o (TIH). Métodos: Foram avaliados pacientes submetidos a CC reconstrutivas, substitutivas ou corretivas. A presença de riscos cardiovasculares pós-operatórios foi avaliada pelo escore da InsCor, enquanto o TIH e a funcionalidade foram coletados em prontuários médicos. Resultados: Cem pacientes com idade média de 59,2±12,3 anos foram incluídos. Correlações significativas entre funcionalidade e TIH total e na Unidade de Terapia Intensiva (UTI) (p<0.0001, ρ=0.56; p=0.002, ρ=0.29, respectivamente), bem como entre o TIH e o número de comorbidades (p=0.003, ρ=0.28) foram encontradas. Não foram observadas correlações significativas entre o número de fatores de risco pós-operatórios e o TIH. Conclusão: O número de alterações funcionais e o número de comorbidades estão associados ao aumento do TIH total e na UTI em pacientes submetidos à CC.
Fatores associados ao aleitamento materno na primeira hora de vida
Authors: Szymanski Jéssica Helena Lourenço , Figueiredo Francisco Winter dos Santos , Silva Adna Thaysa Marcial da , Puccia Maria Inês Rosselli
Published: May 2024

Introdução: O aleitamento materno na primeira hora de vida ainda é pouco estimulado em vários hospitais do Brasil. Objetivo: Analisar a prevalência e os fatores associados ao aleitamento materno na primeira hora de vida (AMP) entre recém-nascidos a termo. Métodos: Estudo transversal, de natureza quantitativa, com coleta de dados secundários retrospectivos em prontuários hospitalares de 250 recém-nascidos a termo, independentemente do tipo de parto, com histórico de gestacional de risco habitual, atendidos nos últimos seis meses anteriores ao período de coleta de dados, em uma maternidade pública da Grande São Paulo. Os dados foram coletados entre novembro de 2018 e janeiro de 2019, por meio de roteiro estruturado, mediante aprovação do hospital e do Comitê de Ética em Pesquisa da FMABC (Parecer n.º 2.924.393). O banco de dados e o tratamento estatístico foram realizados através do programa STATA®.  Para a análise, utilizou-se proporções e teste qui-quadrado, adotando-se um nível de significância de 5% e 95% o intervalo de confiança. Resultados: A prevalência de AMP foi de 66%. O AMP está associado a anestesia no parto (p<0,001), APGAR menor ou igual a 8 no 1º e 5º minutos (p<0,001) e ao parto cesárea (p<0,001), cuja proporção na amostra foi de 29,2%. Desconforto respiratório (38,82%), hipotonia (24,70%), seguido de condições maternas desfavoráveis (18,82%), mostraram-se como fatores impeditivos para o AMP, embora 90% dos recém-nascidos tenham recebido Apgar 9/10 no 5º minuto. Conclusão: A prevalência do aleitamento materno precoce é inferior ao recomendado, porém compatível com as proporções de frequência nacional mais recentes.
Nurses’ perceptions about management practices of nurse managers during pandemics: a descriptive and cross-sectional study
Authors: Tisinli Ayla , Saydamlı Şeyda
Published: May 2024

Introduction: Hospitals may not be able to manage the chaotic environment during pandemics through classical management principles. Management can only be achieved with the help of effective leadership, appropriate flow of crisis management systems, teamwork, and collaboration. Nurse managers should have effective management skills. Objective: To evaluate the perception of the nurse managers' practices by nurses such as resource management, organization, communication, psychosocial, care-training, and decision-making practices in the management of the pandemic based on the COVID-19 pandemic. Methods: A quantitative, cross-sectional method was used, and a web-based online questionnaire was applied to collect data. This study included 182 nurses working in a public and private hospital in İstanbul. Result: The nurses perceived the management practices of their managers at a moderate level. The leaders' resource management practices as low (16.5%), and medium (78.6%) perceive. There was a statistically significant difference (p<0.01) between the communication and team relations (p<0.05), resource management (p<0.01), care-training (p<0.05), and decision-making scores (p<0.01) of the nurses working in the private hospitals compared to those working in the public hospital. Conclusion: To effectively manage a complex and chaotic environment, nurse managers should trust their team, have speed and adaptation skills, be based on human factor principles, and provide a safe working environment. Education should be emphasized so that nurses can work in specialized areas and nurse managers can improve their management skills.
Estresse ocupacional e as estratégias de enfrentamento da equipe de enfermagem em tempos de Covid-19
Authors: Schirmann Katiusci Colman Magalhães , Contrera Luciana , Souza Albert Schiaveto de , Cardoso Andreia Insabralde de Queiroz , Bergamaschi Fabiana Perez Rodrigues
Published: May 2024

Introdução: O aumento da carga de trabalho dos profissionais de saúde e o grau de complexidade dos pacientes, atribuem maior risco para o estresse psicossocial. Objetivo: Avaliar as associações entre o estresse ocupacional, a qualidade de vida no trabalho e as estratégias de enfrentamento pela equipe de enfermagem hospitalar na pandemia de COVID-19. Métodos: Estudo transversal, quantitativo com amostragem por conveniência, coleta de dados de agosto a dezembro de 2020; em duas unidades da rede hospitalar privada, com questionário sociodemográfico, ocupacional e de saúde; escala visual analógica de avaliação da qualidade de vida no trabalho; Escala de Demanda-Controle-Apoio Social (DCS); Escala de Coping ocupacional. Resultados: A amostra total foi de 196 profissionais de Enfermagem. Houve correlação significativa negativa, porém fraca, entre a dimensão “Demanda” da DCS e QVT (p<0,001, r=-0,367). O controle sobre o trabalho relacionado à qualidade de vida no trabalho possui correlação significativa positiva, porém fraca, entre a dimensão “Controle” da DCS e QVT (p=0,025, r=0,160); e correlação significativa negativa, porém fraca, entre a dimensão “Apoio social” da DCS e “Esquiva” de Coping (p=0,003, r=-0,213). Conclusão: Os achados deste estudo permitiram a correlação entre o estresse ocupacional, coping e qualidade de vida no trabalho, mostrando que quanto menor o apoio social, maior uso das estratégias de esquiva e consequentemente declínio na qualidade de vida no trabalho. Permitiram também identificar as estratégias de enfrentamento (coping) utilizadas pela equipe de enfermagem e qualidade de vida no trabalho frente ao estresse ocupacional durante a pandemia da COVID-19.
Septin 7 interacts with Numb to preserve sarcomere structural organization and muscle contractile function
Authors: De Gasperi Rita , Csernoch Laszlo , Dienes Beatrix , Gonczi Monika , Chakrabarty Jayanta K , Goeta Shahar , Aslan Abdurrahman , Toro Carlos A , Karasik David , Brown Lewis M , Brotto Marco , Cardozo Christopher P
Published: May 2024

Here, we investigated the mechanisms by which aging-related reductions of the levels of Numb in skeletal muscle fibers contribute to loss of muscle strength and power, two critical features of sarcopenia. Numb is an adaptor protein best known for its critical roles in development, including asymmetric cell division, cell-type specification, and termination of intracellular signaling. Numb expression is reduced in old humans and mice. We previously showed that, in mouse skeletal muscle fibers, Numb is localized to sarcomeres where it is concentrated near triads; conditional inactivation of Numb and a closely related protein Numb-like (Numbl) in mouse myofibers caused weakness, disorganization of sarcomeres, and smaller mitochondria with impaired function. Here, we found that a single knockout of Numb in myofibers causes reduction in tetanic force comparable to a double Numb, Numbl knockout. We found by proteomics analysis of protein complexes isolated from C2C12 myotubes by immunoprecipitation using antibodies against Numb that Septin 7 is a potential Numb-binding partner. Septin 7 is a member of the family of GTP-binding proteins that organize into filaments, sheets, and rings, and is considered part of the cytoskeleton. Immunofluorescence evaluation revealed a partial overlap of staining for Numb and Septin 7 in myofibers. Conditional, inducible knockouts of Numb led to disorganization of Septin 7 staining in myofibers. These findings indicate that Septin 7 is a Numb-binding partner and suggest that interactions between Numb and Septin 7 are critical for structural organization of the sarcomere and muscle contractile function.
Representational drift as a result of implicit regularization
Authors: Ratzon Aviv , Derdikman Dori , Barak Omri
Published: May 2024

Recent studies show that, even in constant environments, the tuning of single neurons changes over time in a variety of brain regions. This representational drift has been suggested to be a consequence of continuous learning under noise, but its properties are still not fully understood. To investigate the underlying mechanism, we trained an artificial network on a simplified navigational task. The network quickly reached a state of high performance, and many units exhibited spatial tuning. We then continued training the network and noticed that the activity became sparser with time. Initial learning was orders of magnitude faster than ensuing sparsification. This sparsification is consistent with recent results in machine learning, in which networks slowly move within their solution space until they reach a flat area of the loss function. We analyzed four datasets from different labs, all demonstrating that CA1 neurons become sparser and more spatially informative with exposure to the same environment. We conclude that learning is divided into three overlapping phases: (i) Fast familiarity with the environment; (ii) slow implicit regularization; and (iii) a steady state of null drift. The variability in drift dynamics opens the possibility of inferring learning algorithms from observations of drift statistics.
The Chronic Time Pressure Inventory: further assessment of factorial structure and validity
Authors: Denovan Andrew , Dagnall Neil , Drinkwater Ken
Published: May 2024

Background

Chronic time pressure represents a prevalent concern within modern society, and effective measurement is crucial for research advancement. The Chronic Time Pressure Inventory (CTPI) has thus far demonstrated adequate psychometric properties. However, only two studies have examined the measure and evidence of its validity is limited. Accordingly, the current investigation, via two independent studies, assessed the factorial composition and validity (convergent/discriminant) of the CTPI.

Methods

Study 1 (N = 398) examined competing factorial models and validity in relation to the Big Five personality traits (Extraversion, Agreeableness, Conscientiousness, Neuroticism, Openness). Study 2 (N = 358) replicated the analysis of factor structure and assessed validity in comparison with five time perspectives (Past Negative, Present Fatalistic, Future, Past Positive, Present Hedonistic). Participants across both studies completed standardized self-report measures capturing the variables.

Results

Comparison of confirmatory factor analysis (CFA) and exploratory structural equation modelling (ESEM) factor solutions indicated that an ESEM bifactor model provided the strongest data-model fit. This included a general chronic time pressure component alongside specific subfactors of Feeling Harried and Cognitive Awareness of Time Shortage. All scale items reflected the general factor; however, some items loaded weakly on the intended specific factor. The CTPI is thus a robust indicator of chronic time pressure but needs refinement as a measure of the specific factors. Convergent/discriminant validity analyses inferred that the CTPI captured chronic time pressure as a related, but distinct, construct to perceived stress, and evidenced a relationship with theoretically associated constructs (Big Five personality traits and time perspective). Overall, the CTPI is a sound measure of chronic time pressure and has the potential to further cohesive research efforts on the contribution of this construct to various life domains.
Diagnostic Utility of Cell block and Immunocytochemistry in Differentiating Malignant from Non-malignant Effusions: A Cross-sectional Study
Authors: Rizvi Aleena , Shukla Prakriti , Gupta Vivek
Published: May 2024

Introduction: Cytological evaluation of body cavity fluids has been widely employed in diagnosing the underlying aetiology. Differentiating reactive mesothelial cell proliferations from metastatic malignant cells based on cytomorphology alone is challenging. Therefore, the use of cell blocks in conjunction with immunocytochemistry can significantly improve diagnostic accuracy. Aim: To investigate the role of cell blocks and immunocytochemistry in distinguishing malignant from non- malignant effusion fluids. Materials and Methods: A prospective cross-sectional study was conducted on 70 serous effusion fluid samples (ascitic and pleural fluids) received in the Cytology section of the Pathology Department from October 2021 to November 2022. Relevant clinical details, including demographic information, age, gender, presenting complaints, and radiological and laboratory investigations, were documented from the patients’ medical records. All fluids underwent conventional cytology, and the remaining fluid was used for cell block preparations. Immunocytochemistry was performed using Ber-EP4 and Calretinin immuno-markers to differentiate between reactive mesothelial cells and malignant cells. The association between cytosmear/cell block and immunocytochemistry was calculated using the chi-square test. Results: Out of the 70 cases, 44 were pleural fluids, and 26 were ascitic fluids. Conventional cytology identified 11 positive cases, 20 suspicious cases, and 39 negative cases for malignancy. However, after cell block examination, the total number of positive cases reduced to 9, suspicious cases decreased to 12, and negative cases increased to 49, resulting in a 14.3% increase in diagnostic accuracy. Immunocytochemistry using Ber-EP4 showed strong positivity in 12 cases, indicating epithelial malignancy (adenocarcinoma), while 9 cases were Ber-EP4 negative. Calretinin positivity was observed in the mesothelial cells of all 21 cases where immunohistochemistry was performed, resulting in a 17.5% increase in diagnostic accuracy. Conclusion: The combination of cell block technique with conventional cytology improves the diagnostic yield and accuracy by providing better interpretation of architectural patterns and cytomorphology. Additionally, the application of immunocytochemistry using Ber-EP4 and Calretinin aids in distinguishing malignant from non-malignant serous effusions.
Effect of Different Levels of Humic Acid and Salicylic Acid on Yield ParameterS and Yield of Cowpea (Vigna Unguiculata)
Authors: Singh A. K. , Mubeen . , Kaleem . , Khan Nadeem , Sachan Dhruvendra Singh , Mued Mohd.
Published: May 2024

An investigation was carried out at Narendra Deva University of Agriculture & Technology, Faizabad (U.P.) during Kharif season of 2013 to find out the effect of different levels of humic acid and salicylic acid on yield contributing parameters and yield of cowpea. The design of the experiment was Randomized Block Design and comprises of six treatments replicated thrice. The maximum pod per plant was recorded with T5 (Foliar spray of humic acid (26 ml/liter water) and 0.2% salicylic acid at 35, 55 and 65 DAS) while minimum number of pods per plant recorded in T2 (Foliar spray of humic acid (26 ml/liter water) at 25 DAS and 0.2% salicylic acid 55 DAS). Maximum pod length (75.92 cm), Maximum number of seed per pod (13.67) and 100 seed weight (13.29 g) was recorded in T5, followed by T4. The maximum seed yield per plant of 13.10 g and harvest index (42.28 %) was reported with the application of humic acid @ (26 ml/liter water) and 0.2% salicylic acid at 35, 55 and 65 DAS.
Ambient Air Quality Assessment through Air Quality Index and Air Quality Health Index for Eastern Coastal Region, Gandhidham, Gujarat, India
Authors: Sengani Pratik D. , Chandra Rachna , Agarwal Gaurav
Published: May 2024

The impact of coastal developmental projects such as ports on regional air quality has been a matter of concern, as they are known to induce rapid industrialization and urbanization as collateral development on a long-term basis. Gandhidham-Kachchh, Gujarat, India is hub for industrialization, thus various developmental activities and port activities may release toxic gases into the environment. Thus, an attempt was made to assess the present ambient air quality in and around eastern coastal region of Gandhidham, Gujarat using Air Quality Index (AQI) and Air Quality Health Index (AQHI). The primary focus was on respirable particulate matter (PM10) and fine particulate matter (PM2.5) along with other gaseous pollutants. In total 134 samples were collected from 11 stations during January to December 2018. Sampling was carried out 24 hourly on a monthly basis. Respirable particulate matter (PM10), fine particulate matter (PM2.5), sulphur dioxide and nitrogen dioxide ranged from 29-401 µg/m3, 13-184 µg/m3, 5.9-92.6 µg/m3and 3.7-33 µg/m3, respectively. The annual mean concentrations varied from 118-227 µg/m3, 47-82 µg/m3, 10-51 µg/m3, 11-41 µg/m3 for PM10, PM2.5, sulphur dioxide and nitrogen dioxide, respectively. In most of the sampling locations both the particulate matter fractions exceeded the permissible limit as prescribed in National Ambient Air Quality Standard (NAAQS). The AQI ranged from 28 to 106, which falls under Good and Satisfactory category of pollution as per the Central Pollution Control Board (CPCB) standards except at A-11 which falls under Moderate category. The AQHI was in the range of 5.9 to 15.8, which was alarming indicating Moderate to Very Higher Risk to the people. The present findings throw light on the prevailing scenario in the ambient air quality of the studied region, thereby suggesting for strict implementation and thorough control measures for reduction of particulate matters in the air.
Effect of Various Weed Management Options on Weed Dry Matter, Yield Attributes and Yield of Sweet Corn (Zea mays L. saccharata) under Organic Production System
Authors: Neha . , Bhambri M. C. , Manisha . , Verma Nagendra Kumar , Porte Dipendra Pankaj , Kumar Harendra , Nag Anchal
Published: May 2024

A field experiment was conducted at Instructional cum Research Farm, Indira Gandhi Krishi Vishwavidyalaya, Raipur (C.G.) during kharif 2019 entitled “Effect of various weed management options on weed dry matter, yield attributes and yield of sweet corn (Zea mays L. saccharata) under organic production system”. The soil of the experimental site was clayey in texture, neutral in reaction and low in nitrogen, medium in phosphorus and high in potassium. The experiment was laid out in Randomized Block Design with three replications. The weed flora of the experimental site was dominated by Echinocloa colona, Alternanthera sessilis, Parthenium hysterophorus, Cyperus iria. Results revealed that the highest green cob yield of sweet corn was recorded in stale seed bed + reduced spacing (upto 25%) + mulching with paddy straw + 20 DAS hand weeding (7.63t ha-1 ) which was 83.48% higher than the weedy check. The green cob yield in stale seed bed + reduced spacing (upto 25%) + mulching with paddy straw + 20 DAS hand weeding was found to be at par with mulching with waste polythene bags (ITK-practices) (7.45t ha- ), hand weeding twice carried out at 20 and 40 DAS (7.33 t ha-1) and soil solarization with 25µ polythene mulch during summer + one hand weeding at 20 DAS(6.94t ha-1). Although grain yield in other weed management practices was significantly lower than stale seed bed + reduced spacing (upto 25%) + mulching with paddy straw + 20 DAS hand weeding treatments but higher than weedy check. Similarly, As regards  total weed dry weight at harvest, the total lowest weed dry weight was observed in stale seed bed + reduced spacing (upto 25%) + mulching with paddy straw + hand weeding at 20 DAS(3.45gm-2) followed by mulching with waste polythene bags (ITK- practices)(4.71 gm-2), hand weeding at 20 and 40 DAS (4.96gm-2)and soil solarization with 25µ polythene mulch during summer + one hand weeding at 20 DAS(5.08 gm-2). However, higher WCE was noticed in these treatment over weedy check. The weedy check was significantly inferior in all the yield attributes and green cob yield of sweet corn.
Efficient Smart Water Management Techniques to Enhance Crop Productivity for Maize
Authors: Prema P. , Veeramani A. , Kannan J. , Kumar T. Sampath , Sivasankari B. , Rani P. Jona Innisai , Amutha S.
Published: May 2024

Maize is identified as the “Queen of Cereals” owing to its high yield. Water scarcity is a major problem, where agriculture consumes significant freshwater. Smart Irrigation with Internet of Things technology can help farmers to maximize crop production with less water. The field experiment on sensor-based drip Irrigation and farmer practice was conducted in the research field to enhance growth, yield, and water efficiency. The experiment comprised eight treatments such as T1: IoT based Drip Irrigation at 60% depletion level, T2: IoT based Drip Irrigation at 80% depletion level, T3: Drip Irrigation at 60% PE, T4: Drip Irrigation at 80% PE, T5: Drip irrigation as Normal Practice, T6: Surface Irrigation at 60% IW/CPE ratio, T7: Surface Irrigation at 80% IW/ CPE ratio and T8: Flood irrigation as Farmer’s Practice. The proposed systems-based Drip irrigation at a 60% depletion level can be recommended for hybrid maize to augment higher grain and straw yield. The highest water saving was recorded in IoT-based Drip Irrigation at a 60% depletion level(46.88%) followed by IoT-based Drip Irrigation at an 80% depletion level(40.63%).
Prevalence of African Mosaic and Morphological Characterization of Cassava (Manihot esculenta Cranz) Varieties in Two Agroecological Zones of Cameroon
Authors: Alain Heu , Bertrand Mboussi Serge , Abdou Kone Nsangou Nourou , Sylvere Dida Lontsi Landry , Patrice Ngoh Dooh Jules , Zachee Ambang
Published: May 2024

The objective of this work is to conduct an epidemiological study of African cassava mosaic and to characterize the diversity of local cultivars in circulation in the monomodal and bimodal rainforest zones of Cameroon. Disease-related parameters (incidence and severity index) were studied as well as morphological parameters (plant height, leaflet color, petiole color, lobe length, number of lobes, number of branches, petiole length). The results show that 96 cassava varieties were identified with 89 local varieties and 07 improved varieties. Diseased plants showed a symptom severity index of 1 to 5, which could reduce production by half in the areas considered. The leaf color was dark green, the number of branches was 3, the lobe and petiole lengths were 16.46 and 22 cm respectively, while the number of lobes was 5 the disease incidence for the two agro-ecological zones as a whole is 57.58% for a symptom severity index of 3. The epidemiological study reveals that the desease incidence of both agro-ecological zones was 57.58 % for a symptom severity index of 2 corresponding to 40 %.  In the humid forest zone with monomodal spray the average incidence was 49.74% and a leaf attack rate was 29.03 % in the locality of Njombé (Cameroon's littoral region). At Ekona in southwestern Cameroon, the average incidence was 63% and leaf attack index was 1 corresponding to 20 %. In the bimodal rainforest zone (central Cameroon region), the average incidence was 60 % for a leaf attack rate was 37.11%. The expected results highlight a relatively worrying situation. Principal Component Analysis (PCA) confirms the convergence of tolerance towards the mosaic and grouped the different varieties into more or less homogeneous groups according to the morphological and epidemiological cassava descriptors. The results of the present work show that the introduction of cassava local varieties tolerant to mosaic disease in middling could be an alternative for the control of the cassava mosaic disease.
Analysis of Wave Characteristics near Wangdeungdo through Southwest Sea Wave Hindcasting
Authors: Noh Young Ju , Sun Min Young
Published: May 2024

Wave conditions are crucial for offshore wind farm design, particularly in determining structural loads and layout. However, there is limited wave hindcasting research for the Wangdeungdo Island area, a potential offshore wind site. This study used the MIKE21 model for a year-long wave hindcast around Wangdeungdo in 2021. Validation showed high reproducibility for significant wave heights with RMSE values of 0.177 and 0.225 and Pearson correlations of 0.971 and 0.970 at Sangwangdeungdo and Buan buoys. Subsequent analysis of the wave characteristics near Wangdeungdo indicated significant seasonal variations and differences in maximum significant wave heights across locations, which are expected to significantly impact the design loads for offshore wind structures.
A Study on the Introduction of Impact Assessment System for Coastal Erosion
Authors: Shin Bum Shik , Shin Hyun Hwa
Published: May 2024

Recently, the impact of climate change with sea levels rise, abnormal high waves, and continuous construction of artificial structures such as ports and harbors, has led to an increasing trend in coastal erosion. In this study, the scope and method of Environmental Impact Assessment, Utilization of Sea Areas, Disaster Impact Assessment, and Risk Assessment of Coastal Disasters System, which are carried out during development projects and erosion reduction projects carried out on the coast, are analyzed to identify each problem. , we proposed a plan to introduce the Impact Assessment System for Coastal Erosion, which can minimize the impact of coastal erosion by deriving improvement measures.
Improved adaptive control for the discrete‐time parametric‐strict‐feedback form
Authors: González Graciela Adriana
Published: November 2009

Adaptive control design for a class of single‐input single‐output nonlinear discrete‐time systems in parametric‐strict‐feedback form is re‐visited. No growth restrictions are assumed on the nonlinearities. The control objective is to achieve tracking of a reference signal. As usual, the algorithm derives from the combination of a control law and a parameter estimator (certainty equivalence principle). The parameter estimator strongly lies on the regressor subspace identification by means of an orthogonalization process. Certain drawbacks of previous schemes are analyzed. Several modifications on them are considered to improve the algorithm complexity, control performance and numerical stability. As a result, an alternative control scheme is proposed. When applied to the proposed class of systems, global boundedness and convergence remain as achieved objectives while improving the performance issues of previous schemes. Copyright © 2009 John Wiley & Sons, Ltd.
Modified Rachford‐Rice equations including interfacial contributions and their application to the nucleation process
Authors: Carreón‐Calderón Bernardo , Soria Alberto , Romero‐Martínez Ascención
Published: November 2009

The Rachford‐Rice expressions [Rachford HH, Rice JD, Petroleum Trans AIME 1952;195:327‐328] have been modified to include interfacial contributions in the calculation of the equilibrium coexistence between two macroscopic phases. It is shown that two‐phase equilibrium states for first‐order phase transitions from nucleation to the presence of evolved macroscopic phases can be characterized by using these generalized expressions. Thus, this new treatment allows the determination of the critical inclusion of nucleation of the so‐called dispersed phase in a way similar to the determination of incipient new‐phase formation points of a saturated phase on the binodal curve. © 2009 American Institute of Chemical Engineers AIChE J, 2010
Analysis of clogging behaviors of diatomaceous ceramic membranes during membrane filtration based upon specific deposit
Authors: Iritani Eiji , Katagiri Nobuyuki , Tadama Tomoaki , Sumi Hiroaki
Published: November 2009

Fouling behaviors in membrane filtration of dilute suspension of polystyrene latex (PSL) were examined under constant‐pressure conditions using diatomaceous ceramic membranes which are semi‐permeable to the PSL. Flux decline behaviors were evaluated in consideration of the effect of the solid permeation through the membrane. The conventional characteristic filtration equation was modified by applying the Kozeny‐Carman equation to the filtrate flow through the membrane pores. In the model, the porosity and specific surface area of the membrane were represented by unique functions of the solid deposit retained in the membrane pores. The variations of the filtration rate and filtrate volume with the filtration time were accurately described based upon the modified characteristic filtration equation. It was revealed that the extent of the membrane blocking per unit deposit load increased with the decrease in the pore size of the membrane and with decreasing pressure, but was little influenced by the suspension concentration. © 2009 American Institute of Chemical Engineers AIChE J, 2010
Asbestos‐related cancers among 28,300 military servicemen in the Royal Norwegian Navy
Authors: Strand Leif Aage , Martinsen Jan Ivar , Koefoed Vilhelm F. , Sommerfelt‐Pettersen Jan , Grimsrud Tom Kristian
Published: November 2009

Introduction

This study focus on the incidence of asbestos‐related cancers among 28,300 officers and enlisted servicemen in the Royal Norwegian Navy. Until 1987, asbestos aboard the vessels potentially caused exposure to 11,500 crew members.

Methods

Standardized incidence ratios (SIR) were calculated for malignant mesothelioma, lung cancer, and laryngeal, pharyngeal, stomach, and colorectal cancers according to service aboard between 1950 and 1987 and in other Navy personnel.

Results

Increased risk of mesothelioma was seen among engine room crews, with SIRs of 6.23 (95% CI = 2.51–12.8) and 6.49 (95% CI = 2.11–15.1) for personnel who served less than 2 years and those with longer service, respectively. Lung cancer was nearly 20% higher than expected among both engine crews and non‐engine crews. An excess of colorectal cancer bordering on statistical significance was seen among non‐engine crews (SIR = 1.14; 95% CI = 0.98–1.32). Land‐based personnel and personnel who served aboard after 1987 had lower lung cancer incidence than expected (SIR = 0.77; 95% CI = 0.64–0.92). No elevated risk of laryngeal, pharyngeal, or stomach cancers was seen.

Conclusion

The overall increase (65%) in mesotheliomas among military Navy servicemen was confined to marine engine crews only. The mesothelioma incidence can be taken as an indicator of the presence or absence of asbestos exposure, but it offered no consistent explanation to the variation in incidence of other asbestos‐related cancers. Am. J. Ind. Med. 53:64–71, 2010. © 2009 Wiley‐Liss, Inc.
Nonsyndromic alar clefts: Report of five Brazilian patients
Authors: Richieri‐Costa Antonio , Guion‐Almeida Maria Leine
Published: November 2009

Nonsyndromic alar clefts are rare and they range from a small notch to variable size of clefts of the nasal ala. Usually they are restricted to the alar region, but other minor anomalies such as midline nasal sinuses and small midline or “northbound” clefts can be present. To date all reported cases of nonsyndromic alar clefts have been sporadic. Here we report on five new cases of isolated and nonsyndromic alar clefts. © 2009 Wiley‐Liss, Inc.
Small supernumerary marker chromosome originating from chromosome 10 associated with an apparently normal phenotype
Authors: Sung Pi‐Lin , Chang Sheng‐Ping , Wen Kuo‐Chang , Chang Chia‐Ming , Yang Ming‐Jie , Chen Lin‐Chao , Chao Kuan‐Chong , Huang Chi‐Ying F. , Li Yueh‐Chun , Lin Chyi‐Chyang
Published: November 2009

Small supernumerary marker chromosomes (sSMC) originating from chromosome 10 are rare. Only seven cases have been documented, and among those three cases were diagnosed prenatally. We reported on another prenatal diagnosis of a de novo mosaic sSMC in an apparently normal female fetus whose mother had conceived with assisted reproductive technology (ART) procedures. G‐banding analysis of amniotic cells was performed. Spectral karyotyping (SKY) and fluorescence in situ hybridization (FISH) studies with chromosome 10‐specific alphoid satellite DNA probe were used to identify the chromosome 10 origin of the sSMC. Further FISH study with telomeric sequence probes showed that the sSMC lacked a hybridization signal, suggesting that the marker could be a ring chromosome. FISH studies using BAC clone probes specific for the regions within 10p11.2, 10q11.1, and 10q11.2 showed that the short arm breakpoint was located between 29.8 and 30.7 Mb from the 10p telomere, and that the long arm breakpoint was located less than 43.6 Mb from the 10p telomere. The karyotype of the fetus was 47,XX,+mar. ish der(10)(SKY+ CEP 10+, CTD‐2130I7+, RP11‐89J23−)/46,XX. Oligonucleotide microarray‐based copy number variations (CNV) analysis was also performed and showed a 6.7 Mb duplication from 10p11.2 to 10q11.2 (36.2–42.9 Mb) with Affymetrix SNP‐array 6.0 genotype: arr cgh. 10p11.2q11.2(CN_519687 → CN_541524) X 3. At the 1‐year follow‐up, the baby did not have any findings of the trisomy 10p syndrome. This observation provided further credence to the concept that additional chromosome material of proximal 10p11.2 may not contribute to the trisomy 10p syndrome phenotype. © 2009 Wiley‐Liss, Inc.
Rare rearrangements: A “jumping satellite” in one family and autosomal location of the SRY gene in an XX male
Authors: Chien Shu‐Chin , Li Yueh‐Chun , Ho Ming , Hsu Pei‐Ching , Teng Ru‐Hsiou , Lin Wei‐De , Tsai Fuu‐Jen , Lin Chyi‐Chyang
Published: November 2009

A satellited short arm of the Y chromosome (Yps) is rare. Only one de novo case of Yps has been documented. Here we report the prenatal diagnosis of Yps in a male fetus with a karyotype, 46,XYps. Family chromosome study showed that the father and a sister had a satellited short arm of the X chromosome (Xps). A phenotypically normal male child with the Yps was delivered. This is the first familial case showing a satellite “jumping” from Xp to Yp. We propose that it resulted from a crossover within the pseudoautosomal region 1 (PAR1) on the distal Xp and Yp during paternal meiosis. In addition to the rare translocation mentioned above, relocation of the SRY gene onto an autosome in XX males is also a rare event. Herein we report a phenotypically normal male fetus with a 46,XX karyotype. Fluorescence in situ hybridization (FISH) study showed that the SRY locus had been transferred to the terminal short arm of a chromosome 3. The terminal short arm deletion of this chromosome 3 was also confirmed by FISH study with a subtelomeric probe and the breakpoint of the terminal deletion was estimated between 446 and 664 kb from the 3p telomere by real‐time qPCR study with a gene sequence and STS markers in this region. A healthy boy was delivered at 37 weeks of gestation. At 1‐year follow‐up, the child's growth pattern and development were appropriate for age. © 2009 Wiley‐Liss, Inc.
Characterization of double ring chromosome 4 mosaicism associated with bilateral hip dislocation, cortical dysgenesis, and epilepsy
Authors: Soysal Yasemin , Balcı Sevim , Hekimler Kuyaş , Liehr Thomas , Ewers Elisabeth , Schoumans Jacqueline , Bui The‐Hung , İçduygu Fadime Mutlu , Kosyakova Nadezda , İmirzalıoğlu Necat
Published: November 2009

We present the clinical and molecular findings in a Turkish child with a de novo mosaic ring derived from chromosome 4 with multiple cell‐lines; the karyotype was 46,XY,r(4)[83]/45,XY, −4[6]/47,XY,r(4),+r(4)[5]/48,XY,r(4),+r(4),+dic r(4)[1]/46,XY[5]. The patient is a 20‐month‐old male who was the first pregnancy of nonconsanguineous parents. The baby was delivered at term with a birth weight of 1,700 g (<3rd centile) and a length of 46 cm. The baby had feeding difficulties and vomiting problems. He started walking at age 2 years and delayed language was observed. Facial appearance was normal, but the ears were large with abnormal structure. The hands showed bilateral clinodactyly of the 5th fingers. He had mild mental retardation, and epilepsy. Analysis of chromosomes showed 46,XY,r(4)(::p16.3 → qter::)[67]/46,XY,r(4;4)(::p16.3 → qter::p16.3 → qter::)[2]/46,XY[3] by multicolor banding (MCB) technique. Array CGH delineated the size of the terminal deletion as 900 kb in 4p16.3. The Wolf–Hirschhorn critical region was preserved even though our patient had mild mental and motor retardation. While the mosaicism of the ring 4 could affect the phenotype, the deleted 900 kb distal deletion and clinical features of the patient may provide further insight into characteristic phenotype of the 4p− related syndromes. © 2009 Wiley‐Liss, Inc.
Clinical and genomic characterization of distal duplications and deletions of chromosome 4q: Study of two cases and review of the literature
Authors: Rossi Michael R. , DiMaio Miriam S. , Xiang Bixia , Lu Kangmo , Kaymakcalan Hande , Seashore Margretta , Mahoney Maurice J. , Li Peining
Published: November 2009

Variable clinical presentations of patients with chromosomally detected deletions in the distal long arm (q) of chromosome 4 have been reported. The lack of molecular characterization of the deletion sizes and deleted genes hinders further genotype–phenotype correlation. Using a validated oligonucleotide array comparative genomic hybridization (oaCGH) analysis, we examined two patients with apparent chromosomal deletions in the distal 4q region. In the first, oaCGH identified a 2.441 megabase (Mb) duplication and a 12.651 Mb deletion at 4q34.1 in a pregnant female who transmitted this aberration to her son. This mother has only learning disabilities while her son had both renal and cardiac anomalies in the newborn period. Unrecognized paternal genetic factors may contribute to the variable expression. The second patient is a 17‐year‐old female with a history of Pierre Robin sequence, cardiac abnormalities and learning disabilities. She was diagnosed prenatally with a de novo 4q deletion, and oaCGH defined a 16.435 Mb deletion of 4q34.1–4q35.2. Phenotypic comparison and subtractive genomic mapping between these two cases suggested a 4 Mb region possibly harboring a candidate gene for Pierre Robin sequence. Our cases and review of reported cases with genomic findings indicated the presence of familial variants with variable expressivity as well as de novo or inherited pathogenic simple deletion, duplication and complex deletion and duplication in the distal 4q region. © 2009 Wiley‐Liss, Inc.
Whorl patterns on the lower lip are associated with nonsyndromic cleft lip with or without cleft palate
Authors: Neiswanger Katherine , Chirigos Kevin W. , Klotz Cherise M. , Cooper Margaret E. , Bardi Kathleen M. , Brandon Carla A. , Weinberg Seth M. , Vieira Alexandre R. , Martin Rick A. , Czeizel Andrew E. , Castilla Eduardo E. , Poletta Fernando A. , Marazita Mary L.
Published: November 2009

Nonsyndromic cleft lip with or without cleft palate (CL/P) is a common birth defect due to both genetic and environmental factors. Whorl lip print patterns are circular grooves on the central upper lip and/or the left and right lower lip. To determine if whorls are more common in families with CL/P than in controls, the Pittsburgh Orofacial Cleft Study collected lip prints from over 450 subjects, that is, individuals with CL/P, their relatives, and unrelated controls—from the U.S., Argentina, and Hungary. Using a narrow definition of lower‐lip whorl, the frequency of whorls in the U.S. sample was significantly elevated in cleft individuals and their family members, compared to unrelated controls (14.8% and 13.2% vs. 2.3%;P = 0.003 and 0.001, respectively). Whorls were more frequent in CL/P families from Argentina than in CL/P families from the U.S. or Hungary. If these results are confirmed, whorl lip print patterns could be part of an expanded phenotypic spectrum of nonsyndromic CL/P. As such, they may eventually be useful in a clinical setting, allowing recurrence risk calculations to incorporate individual phenotypic information in addition to family history data. © 2009 Wiley‐Liss, Inc.
Autosomal dominant syndrome of mental retardation, hypotelorism, and cleft palate resembling Schilbach–Rott syndrome
Authors: Shkalim Vered , Baris Hagit N. , Gal Gavriel , Gleiss Ruth , Calderon Shlomo , Wessels Marja , Maat‐Kievit Anneke , Menten Björn , De Baere Elfride , Hennekam Raoul C.M. , Schirmacher Anja , Bale Sherri , Shohat Mordechai , Willems Patrick J.
Published: November 2009

We present a family segregating for an autosomal dominant syndrome of hypotelorism, cleft palate/uvula, high‐arched palate and mild mental retardation. Although these findings may suggest a form of holoprosencephaly, no holoprosencephaly was found on MRI of the proposita. Results of genetic studies were normal including FISH for deletion of 22q11, karyotype analysis, fragile X testing, high‐resolution comparative genomic hybridization and SEPT9, SHH mutation analysis. The syndrome is reminiscent of the infrequently recognized autosomal dominant Schilbach–Rott syndrome. © 2009 Wiley‐Liss, Inc.
Genotype–phenotype correlation in four 15q24 deleted patients identified by array‐CGH
Authors: Andrieux Joris , Dubourg Christèle , Rio Marlène , Attie‐Bitach Tania , Delaby Elsa , Mathieu Michèle , Journel Hubert , Copin Henri , Blondeel Eléonore , Doco‐Fenzy Martine , Landais Emilie , Delobel Bruno , Odent Sylvie , Manouvrier‐Hanu Sylvie , Holder‐Espinasse Muriel
Published: November 2009

Microdeletion 15q24 is an emerging syndrome recently described, mainly due to increased use of array‐CGH. Clinical features associate mild to moderate developmental delay, typical facial characteristics (high forehead and frontal hairline, broad eyebrows, downslanting palpebral features, long philtrum), hands (particularly proximal implanted thumbs) and genital anomalies (micropenis, hypospadias). We report here on four de novo cases having 2.5–6.1 Mb deletions involving 15q24: one 15q23q24.2 (Patient 1) and three 15q24.1q24.2 deletions (Patients 2–4). We correlate phenotype to genotype according to molecular boundaries of these deletions. Since bilateral iris coloboma and severe ano‐rectal malformation were only present in Patient 1, we could link these anomalies to haploinsufficiency of 15q23 genes. Neither hypospadias nor micropenis were present in Patient 3 bearing the smallest deletion, therefore we could define 500 kb 15q24.1 region linked to these anomalies. © 2009 Wiley‐Liss, Inc.