Diagnostic performance of chest CT findings of COVID-19 with RT-PCR negative

COVID-19 presented with lung abnormalities on computed tomography (CT) scans in patient with false negative RT-PCR, which are helpful in diagnosis of this emerging global health emergency. It’s a case report the young woman of 35-year-old patient with 2019-nCoV pneumonia confirmed with IgM-IgG serology underwent thin-section Chest CT.Our patient has the Chest CT with some lung abnormalities, the Ground-glass opacities, crazy paving pattern and smooth interlobular septal thickening. The clinical findings and with conspicuous ground grass opacity lesions in the peripheral and posterior lungs on CT are highly suspected of 2019-nCoV pneumonia. Keywords: COVID-19; Tomography, Spiral Computed; COVID19 serological testing; COVID-19 diagnostic testing; Thorax

Profit-Warning Disclosure and Agency Costs’ Reduction

The asymmetry of information is one of the main reasons for agency conflicts between the manager and the shareholders who depend on the company's financial disclosure to make decisions. This need for information is even more acute in a context characterized by uncertainty, such as the current sanitary crisis Covid-19. Indeed, any information on the consequences of this crisis or future actions to be taken by quoted companies can relatively enlighten the investors. In Casablanca stock market, 20 profit-warnings were published due to the pandemic in order to warn about the financial profitability of 2020 that will be lower than expected. As a consequence, profit-warning disclosure has a negative impact on the share price as demonstrated by several studies besides the impact on the company image. Therefore, this disclosure is particularly controlled by financial market authorities to preserve shareholders’ rights. Given the stakes of profit-warning disclosure, the manager, who is the most informed person in the company, might hide such negative news from the market, governance mechanisms interfere to limit the manager’s discretionary space. Thus, this article aims to present a theoretical discussion about the contribution of PW disclosure to the reduction of agency costs specially for the listed company. In fact, we will try to approach the subject through the various paradigms of governance theory. Since this disclosure corrects the forecast of profitability as expected by the investors, it consequently lowers the agency costs related to the over valuation of the company by the market as defined by Jensen (2004). In addition, the profit-warning can also be considered as a tool of reduction of information and knowledge asymmetry as respectively described by the disciplinary and the cognitive governance paradigms.     JEL Classification: G34, D83 Paper type: Theoretical ResearchThe asymmetry of information is one of the main reasons for agency conflicts between the manager and the shareholders who depend on the company's financial disclosure to make decisions. This need for information is even more acute in a context characterized by uncertainty, such as the current sanitary crisis Covid-19. Indeed, any information on the consequences of this crisis or future actions to be taken by quoted companies can relatively enlighten the investors. In Casablanca stock market, 20 profit-warnings were published due to the pandemic in order to warn about the financial profitability of 2020 that will be lower than expected. As a consequence, profit-warning disclosure has a negative impact on the share price as demonstrated by several studies besides the impact on the company image. Therefore, this disclosure is particularly controlled by financial market authorities to preserve shareholders’ rights. Given the stakes of profit-warning disclosure, the manager, who is the most informed person in the company, might hide such negative news from the market, governance mechanisms interfere to limit the manager’s discretionary space. Thus, this article aims to present a theoretical discussion about the contribution of PW disclosure to the reduction of agency costs specially for the listed company. In fact, we will try to approach the subject through the various paradigms of governance theory. Since this disclosure corrects the forecast of profitability as expected by the investors, it consequently lowers the agency costs related to the over valuation of the company by the market as defined by Jensen (2004). In addition, the profit-warning can also be considered as a tool of reduction of information and knowledge asymmetry as respectively described by the disciplinary and the cognitive governance paradigms.     JEL Classification: G34, D83 Paper type: Theoretical Researc

COVID-19: An Overview of Current progress and prospects in the frantic race to develop upcoming safe and effective SARS-CoV-2 vaccine Candidates

Coronavirus disease 2019 (COVID-19) is an emerging infectious disease caused by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). It quickly spread around the world after its first emergence in Wuhan in December 2019 to become a global pandemic with millions of infections worldwide. As of 1 November 2020, nearly 46 million cases have been reported globally and 1.2 million patients succumbed to the viral disease. Due to the lack of efficient and specific therapeutic and prophylactic options available and the need to contain the epidemic, and its economic, political, cultural, demographic and societal consequences, there is a strong consensus globally only the development of a safe and effective vaccine against COVID-19 is the best way to control and ultimately end the pandemic. Faced with the urgency imposed by the speed of expansion of covid-19, scientists are led to launch themselves into a race against the clock to produce a safe and effective coronavirus vaccine by next year. Once the vaccine has been developed, strong international coordination and cooperation between all stakeholders in the vaccine productionprocess will be needed to ensure equitable availability of the vaccine to the global population

LA PUBLICATION DU PROFIT-WARNING : ETAT DES LIEUX AU MAROC

Le profit-warning est un phénomène nouveau au Maroc qui date de 2008, année de publication du premier profit-warning. Il s’agit d’une communication financière de l’entreprise se retrouvant dans une situation de crise et devant par l’obligation de la loi communiquer au marché financier tout fait pouvant avoir un impact sur les perspectives de l’entreprise. L’objectif de cet article est de démontrer l’importance du profit-warning dans la communication financière de l’entreprise et de décrire les pratiques adoptées par les entreprises marocaines cotées à la place financière de Casablanca en matière de publication des profit-warnings. Notre étude porte sur 62 profit-warnings sur les résultats annuels publiés entre 2008 et 2017, nous analyserons la forme et le contenu de ces publications. L’enjeu du profit-warning est de taille pour l’entreprise, néanmoins les pratiques des entreprises marocaines ne reflètent pas la prise de conscience par rapport à la criticité de cette annonce

How is the SARS-cov-2 virus transmitted ?

Since December 2019, the recent outbreak of coronavirus disease (COVID-19) has continued to spread drastically around the world. To date, no approved drug or vaccine is available to treat or prevent this new coronavirus (SARS-CoV-2) infection.Unprecedented global effort has been made by researchers to understand the various routes of SARS-CoV-2 virus transmission in order to effectively preventthe contamination. In this review, we discuss the updated literature regarding the different modes of SARS-CoV-2 transmission

Lipome intramédullaire: à propos d'une observation

Les lipomes intramédullaires sont des lésions bénignes rares qui représentent environ 1% de l'ensemble des tumeurs de la moelle épinière. Nous rapportons un nouveau cas de lipome intramédullaire non dysraphique confirmé histologiquement. Il s'agissait d'une patiente âgée de 46 ans ayant bénéficié d'une biopsie chirurgicale pour un lipome médullaire il y a 6 mois. Nous ne disposons pas de documents radiologiques antérieurs à cette chirurgie. Elle présente actuellement des rachialgies, des troubles sensitifs, des troubles de la marche et une faiblesse musculaire d'aggravation récente. L'IRM médullaire objective une formation en hypersignal T1 et T2 bien limitée de 8 cm x 2,5 cm prenant le cône terminal. L'imagerie par résonance magnétique occupe une place primordiale dans l'exploration des lipomes intramédullaires, elle permet le diagnostic précoce et ainsi une prise en charge chirurgicale avant la survenue de complications neurologiques irréversibles

Prevalence of Thyroid Autoimmunity among Type 2 Diabetes Moroccan subjects: A Retrospective study

Type 2 diabetes (T2D) is a growing concern in the general Moroccan population and often associated with common endocrine disorders particularly thyroid dysfunction. The purpose of this study is to evaluate the prevalence of T2D and the thyroid autoimmunity (TDI) in Moroccan subjects.A retrospective study was conducted between January 2012 and December 2018. We collected data from 52 diabetic patients and 71 non-diabetic subjects (controls). Thyroid stimulating hormone (TSH), free thyroxin (FT4), free triiodothyronine (FT3), thyroid peroxidase antibodies (TPOAb), and thyroglobulin antibodies (TGAb) levels were measured using Chemiluminescent microparticle immunoassay. Fasting blood glucose (FBG), triglyceride (TG), and total cholesterol (CT) concentrations were determined using dry chemistry method. Hemoglobin A1c (HbA1c) level was evaluated using high performance liquid chromatography principle.   Among 52 diabetic subjects, 23 (44.2.8%) were positives for thyroid antibodies.  The TPOAb mean did not differ significantly between diabetic and control individuals  (24.51 ± 8.22 vs. 13.27 ± 3.72, p=0.167). However, regarding the TgAb level a significant difference was observed in T2D (20.32 ± 4.94 vs. 8.51 ± 2.59, p = 0.004) compared to subjects without diabetes. Hypothyroidism was reported in 52 diabetic patients (44.23%) and (50.7%) in non-diabetic subjects. The analysis of multiple logistic regressions indicated that high risk of TDI in diabetic patients   was not related to diabetes, sex, age, or status of dyslipidemia.Our data revealed no significant association between T2D and TDI disorders in Moroccan subjects. However, further studies on a large sample are needed to confirm these findings

Calidad de fruto y aceite de olivos maduros en condiciones de cultivo de secado parcial de la zona radical

This study was conducted to evaluate the quantitative and qualitative effects of partial rootzone drying (PRD) irrigation on olive trees and their fruit and oil quality. Olive trees of the Moroccan Picholine variety were grown under arid conditions in Marrakech, and exposed to four irrigation treatments: Control (irrigated with 100 % of the crop evapotranspiration, on the two sides of the root system), PRD1 (irrigated with 50 % of the control, on one side of the root system, switching every two weeks), PRD2 (irrigated with 50 % of the control, on one side of the root system, switching every four weeks) and PRD3 (irrigated with the same amount of water as the control applied on one side of the root system, switching every two weeks). The individual fruit weight, dimensions and oil contents were generally greater under PRD than the control. Whereas, the fruit water content was lower under PRD1 and PRD2 than the control and PRD3. Oil acidity was not affected by irrigation, while the total polyphenol content, which affects the oxidative stability and sensory characteristics of the oil, increased in response to the PRD irrigation, especially under PRD1 (246.0 ppm) and PRD2 (278.5 ppm) treatments, against 148.4 ppm and 101.8 ppm for PRD3 and the control respectively. This increase could explain the oil bitterness observed under PRD1 and PRD2. The fatty acid composition was not affected by PRD1 and PRD2. The oil quality based on UV absorption coefficients (K232 and K270) decreased significantly under PRD2. Chlorophyll content and maturity index were antagonistic, and olive ripeness was found to be precocious under PRD irrigation treatments compared to the control.Este estudio fue realizado para evaluar los efectos cuantitativos y cualitativos de la irrigación de olivos por secado parcial de la zona radical (PRD) sobre la calidad de su fruto y de su aceite. Los olivos de la variedad marroquí Picholine fueron cultivados en condiciones áridas en Marrakech, y expuestos a cuatro tratamientos de irrigación: Control (irrigado con el 100 % de la evapotranspiración de la cosecha, en los dos lados del sistema radical), PRD1 (irrigado con el 50 % del control, en sólo un lado del sistema radical, cambiando cada dos semanas), PRD2 (irrigado con el 50 % del control, en un lado del sistema radical, cambiando cada cuatro semanas) y PRD3 (irrigado con la misma cantidad del agua que el control aplicado en un lado del sistema radical, cambiando cada dos semanas). El peso individual del fruto, sus dimensiones y el contenido en aceite fueron generalmente mayores bajo PRD que en el control. Mientras que, el contenido de agua de la aceituna fue inferior en PRD1 y PRD2 que en el control y en PRD3. La acidez del aceite no se afectó por el régimen de irrigación, mientras que el contenido total de polifenoles, que afecta a la estabilidad oxidativa y a las características sensoriales del aceite, aumentó en respuesta a la irrigación mediante PRD, sobre todo con los tratamientos PRD1 (246.0 ppm) y PRD2 (278.5 ppm), frente a los 148.4 ppm y 101.8 ppm de PRD3 y el control, respectivamente. Este aumento podría explicar el amargor del aceite obtenida con PRD1 y PRD2. La composición de ácidos grasos no fue afectada por PRD1 Y PRD2. La calidad del aceite basada en los coeficientes de absorción UV (K232 y K270) disminuyó considerablemente con PRD2. El contenido de clorofila resultó antagonista del índice de madurez, y éste último se desarrolló más precozmente en los tratamientos de irrigación PRD que en el control

Combined vesicovaginal and rectovaginal fistulas associated with a vaginal foreign body

Long-duration intravaginal foreign bodies are a rare entity, but may cause serious complications to the bladder or rectum. We describe a 22-year-old woman who presented with a calcified pelvic mass caused by a long-duration intravaginal foreign body complicated by perforation into the bladder and rectum. The vesicovaginal and rectovaginal fistulas were simultaneously repaired by suprapubic approach after retrieval of the foreign body during the same procedure.Key Words: Vesicovaginal fistula, rectovaginal fistula, vagina, foreign bod