Blood transfusion is a life-saving act because in some cases, it is the last resort to save an individual’s life. However, the seroprevalence of infectious markers in blood donors is a major public health problem, both in developed and developing countries, in its magnitude. The purpose of this study was to determine the seroprevalence of infectious markers in blood donors. This is a descriptive study conducted in the city of Mbujimayi at kansele Hospital among registered blood donors (family volunteers and paid) from the period 12/01/2017 to 13/01/2018. The data were collected in a cross-sectional manner. The following observations were made: in the study period, 522 blood donors were registered. After analyzing the data, the seroprevalence of HIV/AIDS in blood donors is 4.4%, 2.1% of cases have an HCV serological status and 5.9% a HBS positive serological status, and 2.1% a positive RPR HIV status, the male sex predominated with 85.4% was male.

Abstract:
Background and Objective: Although globally admitted as the most valuable
tool to prevent prolongation of labor, the partogram has failed to be commonly
used. This is due to its alleged complexity. Based on the simplified model
proposed by Debdas, the so called paperless partogram, we aimed at evaluating
the ability of only using the alert and action lines to prevent prolongation of
labor. Methods: This was a cross-sectional study including labor records of
women delivered at King Baudouin Hospital of Kinshasa (secondary level) from
01/01 till 31/12/2013. The study was approved by the Faculty Ethical Committee.
Inclusion criteria were: 1) live singleton pregnancy, 2) cephalic fetal
presentation, 3) lack of uterine scar, 4) monitoring in labor ward by 4 cm of
cervical dilation, and 5) delivery at term. For every record, the expected time
of delivery (ETD = 6 hours after 4 cm of cervical dilation) was considered “Alert
EDT” to which 4 hours were added to obtain the “Action EDT”. Irrespective of
other fetal and maternal features contained in the traditional partogram Alert
and Action ETD were checked a posteriori on Debdas’s model to derive the appropriate
outcome of labor. Results: The study included 357 participants, of which 219
primiparous and 138 multiparous. Vaginal delivery took place in 91% of cases.
Full cervical dilation was achieved after 8 - 9 hours (9.5 ± 1.8 hours for
primiparous and 8.4 ± 1.7 hours for multiparous women), namely 2 - 3 hours
following Alert ETD). This duration is close to the Action ETD. For 32 cesarean
sections (9%) final decision took place within the Alert ETD. Conclusion: Using
only Alert and Action ETD was found convenient to derive appropriate measures
for the outcome of labor. So, the paperless partogram is a simplified method to
manage the active stage of labor that could prevent prolongation of labor in
our setting.

Abstract:
It is proved that for any free $\mathcal{A}$-modules $\mathcal{F}$ and $\mathcal{E}$ of finite rank on some $\mathbb{C}$-algebraized space $(X, \mathcal{A})$ a \textit{degenerate} bilinear $\mathcal{A}$-morphism $\Phi: \mathcal{F}\times \mathcal{E}\longrightarrow \mathcal{A}$ induces a \textit{non-degenerate} bilinear $\mathcal{A}$-morphism $\bar{\Phi}: \mathcal{F}/\mathcal{E}^\perp\times \mathcal{E}/\mathcal{F}^\perp\longrightarrow \mathcal{A}$, where $\mathcal{E}^\perp$ and $\mathcal{F}^\perp$ are the \textit{orthogonal} sub-$\mathcal{A}$-modules associated with $\mathcal{E}$ and $\mathcal{F}$, respectively. This result generalizes the finite case of the classical result, which states that given two vector spaces $W$ and $V$, paired into a field $k$, the induced vector spaces $W/V^\perp$ and $V/W^\perp$ have the same dimension. Some related results are discussed as well.

Abstract:
Our main interest in this paper is chiefly concerned with the conditions characterizing \textit{orthogonal and symplectic abstract differential geometries}. A detailed account about the sheaf-theoretic version of the \textit{symplectic Gram-Schmidt theorem} and of the \textit{Witt's theorem} is also given.

Abstract:
Given a $C^\infty$ real manifold $X$ and $\mathcal{C}^m_X$ its sheaf of $m$-times differentiable real-valued functions, we prove that the sheaf $\mathcal{D}^{m, r}_X$ of differential operators of order $\leq m$ with coefficient functions of class $C^r$ can be obtained in terms of the sheaf $\mathcal{H}om_{\mathbb{R}_X}(\mathcal{C}^m_X, \mathcal{C}^r_X)$ of morphisms of $\mathcal{C}^m_X$ into $\mathcal{C}^r_X$. The superscripts $m$ and $r$ are integers.

Abstract:
Cofibrations are defined in the category of Fr\"olicher spaces by weakening the analog of the classical definition to enable smooth homotopy extensions to be more easily constructed, using flattened unit intervals. We later relate smooth cofibrations to smooth neighborhood deformation retracts. The notion of smooth neighborhood deformation retract gives rise to an analogous result that a closed Fr\"olicher subspace $A$ of the Fr\"olicher space $X$ is a smooth neighborhood deformation retract of $X$ if and only if the inclusion $i: A\hookrightarrow X$ comes from a certain subclass of cofibrations. As an application we construct the right Puppe sequence.

Abstract:
In this paper, building on prior joint work by Mallios and Ntumba, we show that $\mathcal A$-\textit{transvections} and \textit{singular symplectic }$\mathcal A$-\textit{automorphisms} of symplectic $\mathcal A$-modules of finite rank have properties similar to the ones enjoyed by their classical counterparts. The characterization of singular symplectic $\mathcal A$-automorphisms of symplectic $\mathcal A$-modules of finite rank is grounded on a newly introduced class of pairings of $\mathcal A$-modules: the \textit{orthogonally convenient pairings.} We also show that, given a symplectic $\mathcal A$-module $\mathcal E$ of finite rank, with $\mathcal A$ a \textit{PID-algebra sheaf}, any injective $\mathcal A$-morphism of a \textit{Lagrangian sub-$\mathcal A$-module} $\mathcal F$ of $\mathcal E$ into $\mathcal E$ may be extended to an $\mathcal A$-symplectomorphism of $\mathcal E$ such that its restriction on $\mathcal F$ equals the identity of $\mathcal F$. This result also holds in the more general case whereby the underlying free $\mathcal A$-module $\mathcal E$ is equipped with two symplectic $\mathcal A$-structures $\omega_0$ and $\omega_1$, but with $\mathcal F$ being Lagrangian with respect to both $\omega_0$ and $\omega_1$. The latter is the analog of the classical \textit{Witt's theorem} for symplectic $\mathcal A$-modules of finite rank.

Background and aims: Adhesions can cause important morbidity
including abdominal and pelvic pain, intestinal obstructions, and infertility. When
adhesions are formed, there is no efficient method, nowadays, to resolve them, thus
the reduction of their prevalence relies on the prevention. Profiling high risk
patients for abdominal and pelvic adhesions (APA) is an important step to this prevention.
The risk factors of adhesions in our institution, the association between APA, leiomyomas
and skin scar anomaly (SSA) were investigated. Methods: A cross-sectional study
was conducted from March 1st to June 30th 2013 including patients who underwent
laparotomy or laparoscopy. Patients’ characteristics, presence of a SSA and leiomyomas,
as related to adhesions, were analyzed. Student’s t, Pearson’s Khi-square, Fisher’s
Exact, Mann-Whitney tests and logistic regression were used. P values < 0.05
were considered statistically significant. Results:
The frequency of adhesions was 41.74%. Patients had a mean age of 32.69 ±
8.94 years. Those with a previous abdominal surgery (PAS), SSA and leiomyomas had
respectively 12 times [OR: 11.98, CI95 (4.63 - 30.97)], 3 times [OR: 2.79, CI95
(1.16 - 6.71) and 2.5 times [(OR: 2.49, CI95 (1.07 - 5.78)] more adhesions. In logistic
regression, a PAS and leiomyomas remained associated significantly to adhesions
with p = 0.000 and p = 0.037 respectively. Conclusion: In peritoneal adhesions,
leiomyomas and SSA are other factors that may allow a cautious selection of high
risk patients who must benefit from particular attention during surgery. Further
well designed studies are necessary to investigate the accurate clinical relation
among those three conditions.

Abstract:
Sheaf theoretically based Abstract Differential Geometry incorporates and generalizes all the classical differential geometry. Here, we undertake to partially explore the implications of Abstract Differential Geometry to classical symplectic geometry. The full investigation will be presented elsewhere.

Abstract:
Given an arbitrary sheaf $\mathcal{E}$ of $\mathcal{A}$-modules (or $\mathcal{A}$-module in short) on a topological space $X$, we define \textit{annihilator sheaves} of sub-$\mathcal{A}$-modules of $\mathcal{E}$ in a way similar to the classical case, and obtain thereafter the analog of the \textit{main theorem}, regarding classical annihilators in module theory, see Curtis[\cite{curtis}, pp. 240-242]. The familiar classical properties, satisfied by annihilator sheaves, allow us to set clearly the \textit{sheaf-theoretic version} of \textit{symplectic reduction}, which is the main goal in this paper.