Corrosion Protection of Carbon Steel in Saline Solution Using Plant Extracts (2025)

Human Papilloma Virus 16/18

Chromogenic In Situ Hybridization

Palatine

Nasopharyngeal

Tonsillar

Hypertrophy

Tonsillectomy Adenoidectomy Adeno-Tonsillectomy.

Background: Recent advancements in molecular techniques have identified over 450 genotypes of Human Papillomavirus (HPV), classified into low- and high-oncogenic risk categories. The rise in high-oncogenic risk HPV genotypes has been linked to various cancers, including those affecting the oral, oropharyngeal, and nasopharyngeal regions in both pediatric and adult populations. Methods: In this study, a cohort of 102 tonsillar tissue samples was included. This comprised 40 specimens from pediatric patients aged 4 to 9 years with nasopharyngeal adenoid hypertrophies, and 42 specimens from pediatric patients aged 5 to 12 years with palatine tonsillar hypertrophies. Among the 82 tonsillar tissue samples analyzed, 38 were from pediatric patients

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Simultaneous Equations System

Tobit Regression Model

Nelson-Olson Method

Two-Stage Limited Dependent Variables Method(2SLDV)

This study relates to the estimation of a simultaneous equations system for the Tobit model where the dependent variables ( ) are limited, and this will affect the method to choose the good estimator. So, we will use new estimations methods different from the classical methods, which if used in such a case, will produce biased and inconsistent estimators which is (Nelson-Olson) method and Two- Stage limited dependent variables(2SLDV) method to get of estimators that hold characteristics the good estimator .

That is , parameters will be estim

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oxadiazole

1

10-phenanthroline

metal complexes

L-Histidine

Azo lignads

structural studies

biological efficiency.

The formation of Zn(II), Cd(II) and Hg(II) complexes was studied with two new hetrocyclic azo ligands 2-[4-(1-sulfonaphthalene)azo]-L-Histidine (L1) and 2-[7-(1-hydroxy3-sulfonaphthalene)azo]-L-Histidine (L2) derived from coupling reaction of diazonium salt of naphthionic acid and 7-amino-1-naphthol-5-sulfonic acid with L-Histidine in an alkaline ethanolic solution. The structural features of all new compounds have been characterized from their elemental analyses, metal content, magnetic moment measurement, molar conductance & FT-IR, UV-Vis. and 1HNMR spectral studies. Furthermore,the composition of complexes have been studied following the mole ratio method after fixing the optimum condition (pH and concentration).Beer’s law

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Core decompression is one of the commonest used techniques in the handling of osteonecrosis of the pre-collapsed head of the femur. Core decompression had succeeded in preserving the hip joint and delaying the requisite for total hip replacement, but it had failed in the induction of osteogenesis in the necrotic area, thus augmenting core decompression with biological agents to induce osteogenic activity. To assess the effects of platelet-rich plasma in non-traumatic avascular necrosis of the hip joint (early stage) after core decompression. Interventional comparative study for twenty-four patients (32 hip joints) with AVN of the head of the femur was involved in this prospective study, and they were separated into two groups of 16

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(1)

(1)

strain

particle size

crystallite size

stress and SSP method

أنموذج الانحدار الذاتي بوجود متغير خارجي (ARX)

الكشف عن القيم الشاذة

طريقة المربعات الصغرى الاعتيادية (OLS)

طريقة المتغيرات المساعدة ذات الخطوات الاربعة (4SIV)

طريقة المربعات الصغرى الموزونة ذات المرحلتين (2SWLS)

طريقة المربعات الصغرى المشذبة (LTS)

مقدرات التباينات الذاتية للبواقي(RA).

(ARX)

The Outliers Detection

Ordinary Least Squares Method

Four-Step Instrumental Variables Method

Two-Stage Weighted Least Squares Method

Least Trimmed Squares Method

Residual Auto-covariances Estimators.

Abstract:

The models of time series often suffer from the problem of the existence of outliers ​​that accompany the data collection process for many reasons, their existence may have a significant impact on the estimation of the parameters of the studied model. Access to highly efficient estimators is one of the most important stages of statistical analysis, And it is therefore important to choose the appropriate methods to obtain good estimators. The aim of this research is to compare the ordinary estimators and the robust estimators of the estimation of the parameters of

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The aim of this work covers the synthesis and characterization of the new tertra dentate ligand(H4L) containing (N and O) as donor set atoms kind (N2O2) where: H4L=Bis-1,2 (2,4-dihydroxybenzylediene phylinediamine . The preparation of ligand contains reaction 2, 4 -Dihydroxy benzaldehyde and o-phenylene diamine . Schiff base was reacted with some metalions in the presence of methanol to give the complexes in the general formula[M (H2L)] where: MII = Co, Ni, Cu, Zn, Cd. All compounds were characterized by spectroscopicmethods I.R , U.V.-Vis, metal content and molar conductivity measurements, showed that thecomplexes are non-electrolyte. The proposed geometry for all of the proposed complexes was atetrahedral while Ni complex was squa

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