2,113 research outputs found

    Spawning and hatching performance of the silvery black porgy Sparidentex hasta under hypersaline conditions

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    Abu Al Abyad island is characterized by harsh environmental conditions. A preliminary trial conducted at the island to investigate the spawning and hatching performance of the blue finned sea bream Sparidentex hasta indicated that the fish can be successfully bred at high salinity levels exceeding 50 ppt

    Spawning and hatching performance of the silvery black porgy Sparidentex hasta under hypersaline conditions

    Get PDF
    Abu Al Abyad island is characterized by harsh environmental conditions. A preliminary trial conducted at the island to investigate the spawning and hatching performance of the blue finned sea bream Sparidentex hasta indicated that the fish can be successfully bred at high salinity levels exceeding 50 ppt.Salinity tolerance, Spawning, Hatching, United Arab Emirates, Sparidentex hasta

    The long wavelength instability of high Prandtl number convective flow

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    AbstractThis paper considers the stationary instability of convective flow between heated vertical planes in the limit of high Rayleigh number, A → ∞. This limit is of practical importance in applications. The planes are held at temperatures that increase linearly with height and differ horizontally by a constant amount. This allows an exact solution of the Boussinesq equations whose nature depends on the value of a convective parameter γ. The lower branch of the neutral stability curve is obtained for general values of γ and large Prandtl numbers, σ, revealing a dramatic change in the stability properties of the system in the limit as σ → ∞

    Arabian Sea sub-surface salinity minima (ASSM)

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    This paper presents the results of the study on the Arabian Sea sub-surface salinity minima (ASSM). The data collected under the North Arabian Sea Environment and Ecosystem Research (NASEER) programme and World Ocean Circulation Experiment (WOCE) has been used in the study. Study of the Arabian Sea water masses is most significant in understanding marine productivity and monsoonal reversal features. Analysis of the data shows that the Arabian Sea sub-surface salinity minima (ASSM) can be found between 25.8 to 26.0 Sigma Theta surfaces. ASSM originates from the south and south east. It is inferred from the results that the salt content of the ASSM varies during different seasons. Appreciable mixing of Arabian Sea salinity minima is observed over Murray Ridge

    Machine Learning for Biometrics

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    Biometrics aims at reliable and robust identification of humans from their personal traits, mainly for security and authentication purposes, but also for identifying and tracking the users of smarter applications. Frequently considered modalities are fingerprint, face, iris, palmprint and voice, but there are many other possible biometrics, including gait, ear image, retina, DNA, and even behaviours. This chapter presents a survey of machine learning methods used for biometrics applications, and identifies relevant research issues. We focus on three areas of interest: offline methods for biometric template construction and recognition, information fusion methods for integrating multiple biometrics to obtain robust results, and methods for dealing with temporal information. By introducing exemplary and influential machine learning approaches in the context of specific biometrics applications, we hope to provide the reader with the means to create novel machine learning solutions to challenging biometrics problems

    Gynaecological morbidities among married women and husband’s behaviour: evidence from a community‐based study

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    Aim To determine the association between gynaecological morbidities and IPV among married women specifically, with attention to the attitudes of the husband and the degree of satisfaction in a marital relationship. Design Cross‐sectional study design. Methods Data were collected using face‐to‐face interviews with married women aged 15–49 years, living in selected communities. Information was collected on demographic characteristics, gynaecological morbidities and IPV using a self‐developed tool. Descriptive and inferential statistics were used to analyse the data. Results Logistic Regression showed a significant association between physical violence and burning micturition, increased urinary frequency, constant dribbling of urine, genital ulcers, lower abdominal pain, vaginal discharge and painful coitus (OR: 1.41–1.84). A significant association between sexual and psychological abuse was also found with burning micturition (OR: 1.41) and dribbling of urine (OR: 0.12). Since gynaecological morbidities can have a serious effect on the psychological, physical well‐being, and the social status of women in Pakistan; effective interventions are imperative in dealing with their symptoms and decreasing their emergence

    Technoscience Art: A Bridge between Neuroesthetics and Art History?

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    One of the recent and exciting developments in mainstream art history is its confrontation with the cognitive sciences and neurology. This study is based on the problems these disciplines face before they can contribute to each other. We inspect several critical issues resulting from this encounter, especially in the context of the recently developing field of neuroesthetics. We argue that it is the language barrier between the disciplines, rather than any fundamental conceptual divison, that causes the lack of understanding on both sides. Shared terms in arts and neuroscience are elusive, and the different connotations of extant terms in these separate disciplines must be addressed. We propose technoscience art as a ground where joint terminology may be developed, an audience familiar to the concerns of both sides can be formed, and a new generation of scientifically-knowledgeable artists and scientists can interact for their mutual benefit

    Ghost cell odontogenic carcinoma of the maxilla: a case report with a literature review

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    The aim of this report is to present a rare case of a Ghost cell odontogenic carcinoma (GCOC) of a 21-year-old man with review of the literature. The patient was treated surgically, and one of the surgical margins was involved, the patient received adjuvant radiotherapy for local control. Five months later, patient presented with infraorbital lesion which was proven histological to be GCOC. Radiological images, histological sections and clinical photographs are also presented. One year after the second surgery, the patient was tumor free. The only effective treatment modality was surgical removal

    Water quality assessment of Al-Sabil River, Iraq using of CCME index

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    The study aimed to determine the water quality of the Al-Sabil River using the Canadian Water Quality Index (CCME WQI). The study was performed by measuring some physical and chemical properties in four selected sites that extend in three provinces including Najaf, Al-Diwaniyah, and Al-Muthanna for a distance of 114 km for six months from August 2022 to January 2023. The results revealed that the average physical and chemical properties, including water temperature, pH, and EC were 19.33-25.33?, 7.25-7.54, and 1138-2510 µs/cm, respectively. The total suspended solids and turbidity recorded 1261-1676, 30.1-47.78, respectively. The DO and BOD have been recorded at 6.417-7.1, and 3.467-6.133 mg/L respectively. The total hardness, Ca, and Mg were 630-853.3 mg/L, 146.3-192.7 mg/L, and 87.39-236.19 mg/L, respectively. The phosphate, nitrite, and nitrate (mg/L) were 0.591-0.887, 0.486-1.539, and 1.772-6.921, respectively.  The results of the study using the Canadian model water quality index (CCME WQI) showed that the lowest rate was 44.35 showing a poor condition in the first site and the highest rate was 51.41 as a marginal condition in the 3rd site
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