scholarly journals Estimation of the spawning ground of some fish species in the Nha Trang bay

2021 ◽  
Vol 20 (4A) ◽  
pp. 115-124
Author(s):  
Quang Van Vo ◽  
Hoa Hong Thi Tran ◽  
Thinh Cong Tran ◽  
Thao Thu Thi Le
Keyword(s):  
Decision Trees ◽  
Fish Species ◽  
Developmental Stages ◽  
Accurate Estimate ◽  
Spawning Ground ◽  
Chi Square ◽  
Spawning Grounds ◽  
Egg Density ◽  
Nha Trang Bay ◽  
Automatic Interaction Detector

The paper presents the results of determining the spawning grounds of some fish species in Nha Trang bay MPA, which were sampled in 9/2018, 11/2018, 5/2019 and 7/2019. The analysis results are based on the distribution of the general density and the developmental stages, analysis of decision trees from egg density, location of stations and months by CHAID (Chi-square Automatic Interaction Detector), allowing a relatively accurate estimate of the spawning ground of the red anchovy (Encrasicholina punctifer Fowler, 1938) and the species of the genus Scarus. As a result, the main spawning grounds for red anchovy were the east of Hon Rua and the northeast of Hon Tam and that of Scarus is the southwest of Hon Mun island.

scholarly journals 709 Healthy Sleep as an important resource and buffer for intersectional discrimination: Results from Covid 19 study

SLEEP ◽  
2021 ◽  
Vol 44 (Supplement_2) ◽  
pp. A276-A277
Author(s):  
Abhishek Pandey ◽  
Kerry Littlewood ◽  
Christine Spadola ◽  
Michelle Rosenthal ◽  
Larry Cooper ◽  
...  
Keyword(s):  
Race And Ethnicity ◽  
Online Survey ◽  
Economic Status ◽  
Grandparents Raising Grandchildren ◽  
Chi Square ◽  
Resource Potential ◽  
Important Resource ◽  
Chaid Analysis ◽  
Resource Needs ◽  
Automatic Interaction Detector

Abstract Introduction Our previous studies have highlighted sleep disparities for this underserved population, including how Grandparents Raising Grandchildren (GRG) experience troubled and disruptive sleep. Intersectional types of discrimination facing these families during COVID 19, include: race/ethnicity of self and children, income, age, essential workforce status, and impairments (mobility, vision, and hearing). This current study intends to explore how healthy sleep is an important resource (potential buffer) for GRG experiencing intersectional discrimination during COVID 19. Methods We used community partnerships to recruit 600 GRG from all fifty states in USA and several tribes to complete an online survey on their experiences with caregiving and intersectional discrimination during COVID 19. We developed an index on intersectional discrimination based on GRG lived experiences to inform the survey and used descriptive and bivariate statistics to profile this group. Chi-square Automatic Interaction Detector (CHAID) analysis was used to build a predictive model to help determine how variables in our study best merge to explain intersectional discrimination. Results Of the GRGs’, 37% were between 54–65 years and 33% cared for children 6 to 10 years for at least 5 years. The types of discrimination that were more likely to be included in intersectional discrimination include: Black or African American [83.8% (31)], my child’s race [59.5% (22)], my lower economic status [56.8% (21)], and my status as a caregiver [56.8% (21)]. The resource needs that showed the most disparity (higher rate showed higher priority/extreme concern) between those with ID and those without included: Information on how COVID impacts race and ethnicity differently (6.0 vs. 3.61), ability to pay utilities (3.7 vs. 1.99), and information on how to achieve healthy sleep (4.19 vs. 2.64). Conclusion This study suggests that GRG facing intersectional discrimination identify the importance of attaining information on how to achieve healthy sleep as an important resource to them during COVID 19. These results can be used to help mobilize resources and disseminate information for this underserved group to improve healthy sleep and also model for their extended families and communities. Support (if any) This study was conducted by the Grandfamilies Outcome Workgroup, (GrOW), with support from Generations United and Collaborative Solutions.

The issue of assessment of efficiency of works on land reclamation fisheries in inland waters of Russia

2021 ◽  
pp. 8-20
Author(s):  
Andrey Dmitrievich Bykov ◽  
Svetlana Yuryevna Brazhnik
Keyword(s):  
Fish Species ◽  
Land Reclamation ◽  
Long Term Results ◽  
Predatory Fish ◽  
Federal State ◽  
Inland Waters ◽  
Ecological Group ◽  
Spawning Grounds ◽  
Commercial Fish

The article considers the issue of assessing the long-term results of work on fisheries reclamation in inland waters of fisheries significance in Russia, carried out by the branches of the Federal State Budgetary Institution “Glavrybvod” on the state task in terms of their effectiveness. The relationship between dredging and clearing of watercourse beds and the dynamics of the number of producers of semi-navigable and non-aquatic fish in these rivers during spawning migrations has not been established. With long-term mowing of wetland vegetation in the shallow waters of reservoirs, deltas of large rivers and estuaries, there is no increase in their commercial fish productivity. A number of examples show the opposite effect of this type of work, which leads to a local deterioration of the ecological state of these reservoirs. At the same time, the repeatedly proven method of combating higher aquatic vegetation in the reservoirs of the south of Russia in low water conditions as biomelioration, based on the introduction of fish, consumers of autotrophic products by regional branches of the Federal State Budgetary Institution “Glavrybvod” is practically not used. When installing artificial spawning grounds in the littoral zone of reservoirs, regular ichthyological monitoring of the effectiveness of spawning on them is not carried out. There are no reliable data confirming the significant positive impact of artificial spawning grounds on the population dynamics of commercial fish species of the limnophilic ecological group under conditions of significant spring water level depletion in Russian reservoirs. When catching predatory and low-value fish species in water bodies, legal obstacles arise due to the fact that the volume of seizure of predatory fish includes commercial objects for which the ODE is established annually and their catch is already carried out according to industrial quotas.

scholarly journals Fatores preditivos de incapacidades em pacientes com hanseníase

2009 ◽  
Vol 43 (2) ◽  
pp. 267-274 ◽  
Author(s):  
Soraya Diniz Gonçalves ◽  
Rosana Ferreira Sampaio ◽  
Carlos Maurício de Figueiredo Antunes
Keyword(s):  
Chi Square ◽  
Belo Horizonte ◽  
Automatic Interaction Detector

OBJETIVO:Analisar os fatores preditivos na evolução do grau de incapacidade em pacientes com hanseníase. MÉTODOS:Foram analisados dados de coorte retrospectiva, que acompanhou 595 pacientes com incapacidades, registrados em uma unidade de saúde de Belo Horizonte (MG), de 1993 a 2003. Informações sociodemográficas e clínicas dos pacientes foram coletadas dos respectivos prontuários. Comparou-se o grau de incapacidade na admissão e no final do tratamento por meio do teste de homogeneidade marginal. Para identificar os fatores associados à evolução do grau de incapacidade foram utilizadas as análises univariada (teste qui-quadrado de tendência linear) e multivariada pelo algoritmo Chi-square Automatic Interaction Detector. RESULTADOS:Dos casos com registro de grau de incapacidade na admissão e na alta, observou-se que 43,2% que tinham grau 1 na primeira avaliação evoluíram para grau 0. Dos que apresentavam grau 2, 21,3% passaram a ter grau 0 e 20% passaram a grau 1. Na análise univariada as variáveis que se mostraram estatisticamente associadas à evolução no grau de incapacidade foram: neurite, tempo até a ocorrência de neurite, número de nervos acometidos, tipo de tratamento fisioterápico e maior dose de prednisona. Na análise multivariada, o principal fator que se associou à evolução do grau de incapacidade foi o grau de incapacidade na admissão. CONCLUSÕES:Os resultados mostraram a importância do diagnóstico precoce de neuropatia, assim como da eficiente associação das intervenções medicamentosas e não-medicamentosas por meio das técnicas de prevenção de incapacidade e dosagens adequadas de corticoterapia.

scholarly journals Influence of contracting conditions on absenteeism

2020 ◽  
Vol 36 (3) ◽  
pp. 503-511
Author(s):  
Fermín Torrano Montalvo ◽  
Iván Fernández-Suárez ◽  
María Botey
Keyword(s):  
Risk Factor ◽  
Decision Trees ◽  
Disease Process ◽  
Important Risk Factor ◽  
Chi Square ◽  
Work Absenteeism ◽  
Interaction Detection ◽  
Chi Squared ◽  
Chi Square Test ◽  
The Relationship

El propósito de esta investigación es analizar las relaciones entre las condiciones de contratación y el absentismo laboral en una muestra de 5524 trabajadores, con el fin de identificar qué segmentos (por tipo de contrato y jornada, tiempo contratado, antigüedad en la empresa y bajas por enfermedad ocurridas en los tres últimos años) están más relacionados con la posibilidad de sufrir un proceso de enfermedad en el año 2017. Se realizaron análisis descriptivos, la prueba chi-cuadrado para tablas de contingencia con dos muestras independientes y los árboles de decisión, basados en el algoritmo CHAID (Chi-squared Automatic Interaction Detection), para detectar las variables más importantes en la identificación de perfiles con una mayor probabilidad de sufrir una incapacidad temporal. Los resultados ponen de manifiesto la existencia de diferencias entre las variables estudiadas. Se considera la modalidad de contratación un factor de riesgo importante del absentismo laboral. The purpose of this research is to analyze the relationship between hiring conditions and work absenteeism in a sample of 5.524 workers in order to identify which segments (by type of contract and workday, time hired, seniority in the company and sick leaves occurred in the last three years) are more related to the possibility of suffering a disease process in 2017. Descriptive analyzes, the chi-square test for contingency tables with two independent samples, and the decision trees based on the CHAID algorithm (Chi-squared Automatic Interaction Detection) were carried out to detect the most important variables in the identification of profiles with a greater probability of suffering a temporary disability. The results show the existence of differences between the variables studied. The hiring modality is considered an important risk factor for work absenteeism.

scholarly journals Response to Environmental Factors of Spawning Ground in the Pearl River Estuary, China

2021 ◽  
Vol 9 (7) ◽  
pp. 763
Author(s):  
Dongliang Wang ◽  
Lijun Yao ◽  
Jing Yu ◽  
Pimao Chen ◽  
Ruirui Hu
Keyword(s):  
River Estuary ◽  
Pearl River Estuary ◽  
Sea Surface ◽  
Spatiotemporal Variability ◽  
Pearl River ◽  
Spawning Ground ◽  
Spawning Grounds ◽  
Chl A ◽  
The Pearl River Estuary ◽  
The Pearl River

Spawning grounds are important areas for fish survival and reproduction, and play a key role in the supplement of fishery resources. This study investigated environmental effects on the spatiotemporal variability of spawning ground in the Pearl River Estuary (PRE), China, using the generalized additive model (GAM), based on satellite remote sensing (sea surface temperature (SST), chlorophyll-a concentration (Chl-a), sea surface salinity (SSS), depth), and in situ observations. Results showed that 39.8% of the total variation in fish egg density was explained by these factors. Among them, the most important factor was SST, accounting for 14.3%, followed by Depth, SSS, and Chl-a, with contributions of 9.7%, 8.5%, and 7.3%, respectively. Spawning grounds in the PRE were mainly distributed in the waters with SST of 22 °C, depth of 30–50 m, SSS of 16–35 ‰, and Chl-a of 6–15 mg/m3. From spring to summer, the spawning ground moved from the outlet of the PRE to the east. The distribution of the spawning ground in the PRE was mainly affected by the Pearl River Plume (PRP), Guangdong Coastal Current (GCC), and monsoons in this area.

scholarly journals Betanodavirus infection in the freshwater model fish medaka (Oryzias latipes)

2006 ◽  
Vol 87 (8) ◽  
pp. 2333-2339 ◽  
Author(s):  
Ryo Furusawa ◽  
Yasushi Okinaka ◽  
Toshihiro Nakai
Keyword(s):  
Marine Fish ◽  
Fish Species ◽  
Reverse Genetics ◽  
Developmental Stages ◽  
Rna Virus ◽  
Oryzias Latipes ◽  
Engineering System ◽  
Nervous Necrosis Virus ◽  
Necrosis Virus ◽  
Model Fish

Betanodaviruses, the causal agents of viral nervous necrosis in marine fish, have bipartite, positive-sense RNA genomes. As their genomes are the smallest and simplest among viruses, betanodaviruses have been studied in detail as model viruses by using a genetic-engineering system, as has occurred with the insect alphanodaviruses, the other members of the family Nodaviridae. However, studies of virus–host interactions have been limited, as betanodaviruses basically infect marine fish at early developmental stages (larval and juvenile). These fish are only available for a few months of the year and are not suitable for the construction of a reverse-genetics system. To overcome these problems, several freshwater fish species were tested for their susceptibility to betanodaviruses. It was found that adult medaka (Oryzias latipes), a well-known model fish, was susceptible to both Striped jack nervous necrosis virus (the type species of the genus Betanodavirus) and Redspotted grouper nervous necrosis virus (RGNNV), which have different host specificities in marine fish species. Infected medaka exhibited erratic swimming and the viruses were localized specifically in the brain, spinal cord and retina of the infected fish, similar to the pattern of infection in naturally infected marine fish. Moreover, medaka were susceptible to RGNNV at the larval stage. This is the first report of a model virus–model host infection system in fish. This system should facilitate elucidation of the mechanisms underlying RNA virus infections in fish.

scholarly journals 115DIMETHYLSULPHOXIDE AND 1,2-PROPANEDIOL DIFFERENTIALLY CRYOPROTECT BOVINE AND PORCINE PRIMORDIAL, PRIMARY AND SECONDARY FOLLICLES

2004 ◽  
Vol 16 (2) ◽  
pp. 180
Author(s):  
E. Papasso Brambilla ◽  
A. Paffoni ◽  
T.A.L. Brevini ◽  
M. De Eguileor ◽  
G. Ragni ◽  
...  
Keyword(s):  
Structural Integrity ◽  
Developmental Stages ◽  
Ovarian Tissue ◽  
Normal Structure ◽  
Ovarian Tissue Cryopreservation ◽  
Protective Effects ◽  
Chi Square ◽  
Primordial Follicles ◽  
Chi Square Test ◽  
Tissue Cryopreservation

Ovarian tissue cryopreservation is of interest for many areas of assisted reproduction. Normal structure and intra- as well as intercellular organization have to be maintained in order to preserve follicle viability. In the present work we studied the effects of two largely used cryoprotectants, namely, dimethylsulphoxide (DMSO) and 1,2-propanediol (PROH), on follicle morphology. Experiments were carried out on bovine and porcine ovaries and the two cryoprotectants were assessed for their ability to preserve structural integrity of primordial, primary and secondary follicles, in order to investigate the protective effects of these molecules on specific developmental stages. Fragments from each ovary were divided in three groups: a) immediately fixed (control); b) cryopreserved in 1.5M DMSO; c) cryopreserved in 1.5M PROH. To allow equilibration with the cryoprotectant, samples were held for 30min at 4°C in order to minimize toxic effects. Cryopreservation was carried out in a controlled rate freezer (Planer Planerple, Sunbury, Middlesex, UK), with the following protocol: precooling (4°C); cooling at −2°C/min to 9°C; seeding at 9°C and standby for 10 minutes; cooling at −0.3°C/min to 40°C and 10°C/min to 140°C; plunging into liquid nitrogen. Samples were rapidly thawed. Dilution of cryoprotectants was carried out in 3 steps of ten minutes each at 4°C (1M; 0.5M; 0M). Samples were then fixed, paraffin embedded, serially sectioned and evaluated with a Nikon TE200 inverted microscope. Follicles of each developemental stage were scored in three categories using the criteria previously described by Paynter et al. (1999, Cryobiology 38, 301–309) and presented in the table below as I=Intact; SA=Small Abnormalities; GA=Great Abnormalities. Statistical differences were assessed by the chi-square test (P<0.05). The results obtained showed that both cryoprotectants are effective for the preservation of secondary follicles. The use of PROH was unable to protect primary and primordial follicles in both species. Conversely, DMSO showed a satisfying cryoprotecting effect for pig primary and bovine primordial follicles but had a poor protecting capability for pig primordial and bovine primary follicles. Altogether the present results suggest that the choice of the cryoprotectant needs to be carefully targeted in relation to the follicular stage and the species of interest. This work was funded by Industria Farmaceutica Serono SpA. Table 1

scholarly journals LEVERAGING DATA MINING TECHNIQUES IN ENHANCING THE EFFICACY OF HEALTHCARE IN THIRD WORLD COUNTRIES: SPOTLIGHT ON TURKISH CASE STUDY

2021 ◽  
Vol 12 (01) ◽  
Author(s):  
Anshika Arshia Chadha
Keyword(s):  
Chi Square ◽  
Edge Information ◽  
The Public ◽  
Medical Clinics ◽  
Public Emergency ◽  
Public Clinics ◽  
Turkish Case ◽  
Financial Issues ◽  
Automatic Interaction Detector

This paper presents a utilization of the information mining technique to decide the financial profiles of the public clinics in Turkey. The review depends on the information accumulated in 2004, covering 645 public clinics run by the Ministry of Health (MoH) as the fundamental supplier of essential and optional wellbeing administrations in Turkey. The public medical clinics, as of now financed by a combination of assets allotted from the overall spending plan and separately worked rotating reserves, need critical answers for their financial issues as a piece of a continuous public change exertion. The examination takes on the Chi-Square Automatic Interaction Detector (CHAID) choice tree calculation, as one of the most efficient and cutting-edge information digging technique utilized for division. The investigation has discovered that the public clinics could be sorted by the CHAID into 12 unique profiles as far as their financial execution. These profiles have directed us in deciding the key financial markers to be engaged upon in the public emergency clinics and present accepted procedures to work on their individual financial exhibitions. The findings have likewise permitted strategy ideas regarding the financial techniques that might be considered in working on the financial execution of the public medical clinics toward an effective wellbeing area change in Turkey.

Sign in / Sign up

Export Citation Format

Share Document