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114 resultados encontrados.

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Preparation and characterization of Pd-Co/sulfated zirconia catalysts for no selective reduction by methane
Artículo
Acceso abierto Artículo CONICET Digital
Rubert, Aldo Alberto et al · Elsevier Science · 2008 · ISSN 1096-1100
Palladium and cobalt bimetallic catalysts supported on sulfated zirconia (PdCo/SZ), obtained from different precursors of Pd (nitrate and acetylacetonate), were prepared to study their influence on the selective reductio...
Idioma eng
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Open Access
Preparation and characterization of pH sensitive hydrogel for sustained release of metoclopramide
Artículo
Acceso abierto Artículo DOAJ
Humaira Sultana et al · AMMANIF · 2023 · ISSN 2521-0521
Objective: The aim of present research work was focus on preparation of PVA/SA hydrogels for Metoclopramide HCl drug release and investigates swelling and release study. Method: Chemical cross-linking method was used for...
LCC TENDOlBoYXJtYWN5IGFuZCBtYXRlcmlhIG1lZGljYQ~~Idioma eng
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Open Access
Preparation of Silver Nanoparticles By Nd:YAG Pulsed Laser and Study Their Optical and Structural Properties
Artículo
Acceso abierto Artículo DOAJ
Moumen Al-Azow et al · University of Mosul, College of Education for Pure Science · 2025 · ISSN 1812-125X
In this study, colloidal silver nanoparticles were prepared using the pulsed laser ablation in liquid (PLAL) technique. The research focused on clarifying the effect of the number of laser pulses on the optical propertie...
LCC TENDOkVkdWNhdGlvbg~~; LCC:Science (General)Idioma eng
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Open Access
Preparation of amine coated silver nanoparticles using triethylenetetramine
Artículo
Acceso abierto Artículo CONICET Digital
Ramajo, Leandro Alfredo et al · Springer India · 2009 · ISSN 0973-7103
This article presents a simple method towards the preparation of functionalized silver nanoparticles in a continuous medium. Silver nanoparticles were obtained through AgNO3 chemical reduction in ethanol and triethylenet...
Idioma eng
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Open Access
Preparation of an environmentally friendly lead adsorbent. A contribution to the rational design of heavy metal adsorbents
Artículo
Acceso abierto Artículo RI ITBA
Rossi, Ezequiel et al · RI ITBA · 2015 · ISSN 2213-3437
"This work described the preparation and characterization of water insoluble chitosan derivatives as lead adsorbents. In highly regioselective reactions, N-substituted crosslinked chitosan derivatives were obtained by cr...
Idioma en
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Open Access
Preparation of Nickel-Cobalt/Carborundum Carbide Composite Coatings by Supergravity Field-Enhanced Electrodeposition
Artículo
Acceso abierto Artículo DOAJ
Xiaoyun Hu et al · KeAi Communications Co., Ltd · 2020 · ISSN 1000-9345
Abstract Nickel-cobalt/silicon carbide (Ni-Co/SiC) composite coatings were fabricated by supergravity field-enhanced electrodeposition. The surface morphology and the distribution of the SiC particles in the coatings wer...
LCC LCC:Ocean engineering; TENDOk1lY2hhbmljYWwgZW5naW5lZXJpbmcgYW5kIG1hY2hpbmVyeQ~~Idioma eng
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Open Access
Preparation, evaluation and stability profile of alginate based floating multiparticulates of Simvastatin
Artículo
Acceso abierto Artículo SEDICI UNLP
Barik, B. B. et al · SEDICI UNLP · 2011
The present study involves preparation and characterization of floating multiparticulate microcapsules with Simvastatin as model drug for prolongation of gastric residence time. The main objective is to improve solubilit...
Idioma en
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Open Access
Bowel preparation for colonoscopy in children: a survey of the Italian society of pediatric gastroenterology, hepatology and nutrition
Artículo
Acceso abierto Artículo DOAJ
Elvira Difrancisca et al · BMC · 2026 · ISSN 1824-7288
Abstract Background Adequate bowel preparation is critical for the success of pediatric colonoscopy. International guidelines recommend standardized low-volume regimens, although several studies also support individualiz...
LCC TENDOlBlZGlhdHJpY3M~Idioma eng
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Open Access
Design of a fixture for precise perpendicular cuts in bone-implant sample preparation
Artículo
Acceso abierto Artículo DOAJ
Mihail Genchev et al · BMC · 2026 · ISSN 1756-0500
Abstract Accurate specimen preparation is essential for biomechanical push-out testing of bone–implant interfaces. A common source of error arises when implants such as pins or screws are not cut exactly perpendicular ...
LCC LCC:Medicine; LCC:Biology (General); LCC:Science (General)Idioma eng
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Open Access
Diazotised Suhphanilic Acid Reagent for the Determination of Trace Amounts of Cephadroxil in Aqueous Solution – Application to Pharmaceutical Preparations
Artículo
Material complementario disponible Artículo DOAJ
Shilan Ali Omer et al · University of Mosul, College of Education for Pure Science · 2008 · ISSN 1812-125X
ABSTRACT A simple spectrophotometric method for the determination of cephadroxil in aqueous solution is developed. The method is based on the coupling of cephadroxil with diazotised sulphanilic acid reagent in the presen...
LCC TENDOkVkdWNhdGlvbg~~; LCC:Science (General)Idioma eng
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Glycyrrhizin preparations in liver diseases: a narrative review of mechanisms and therapeutic potential
Artículo
Material complementario disponible Artículo DOAJ
Tianyu Ma et al · Frontiers Media S.A · 2026 · ISSN 1663-9812
Glycyrrhizin preparations (GLPS), derived from Glycyrrhiza uralensis (licorice), are widely used hepatoprotective agents in clinical practice. Their primary active components, 18α- and 18β-glycyrrhetinic acid (GA), are...
LCC LCC:Therapeutics. PharmacologyIdioma eng
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Productivity of potato cultivars under the use of bioactive preparations on irrigated soils of the North-Western Caspian region
Artículo
Acceso abierto Artículo DOAJ
N. V. Tyutyuma et al · Federal Agricultural Research Center of the North-East named N.V. Rudnitsky · 2026 · ISSN 2072-9081
Agroclimatic conditions of the Lower Volga region are favorable for realizing the productive potential of potato varieties cultivated using intensive resource-saving technologies. The aim of the study was to assess the a...
LCC LCC:AgricultureIdioma rus
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Open Access
Spectrophotometric Determination of Dimethindene in Pharmecutical Preparations and Water Samples
Artículo
Acceso abierto Artículo DOAJ
Nief Ahmed · University of Mosul, College of Education for Pure Science · 1999 · ISSN 1812-125X
ABSTRACT A simple, accurate, rapid and sensitive visible spectrophotometric method has been developed for the determination of dimethindene in pure and pharmaceutical preparations. The method is based on the reaction of ...
LCC TENDOkVkdWNhdGlvbg~~; LCC:Science (General)Idioma eng
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Open Access
Spectrophotometric Determination of Metoclopramide in Some Pharmaceutical Preparation via Oxidative Coupling Reaction
Artículo
Acceso abierto Artículo DOAJ
Nief Ahmad et al · University of Mosul, College of Education for Pure Science · 2006 · ISSN 1812-125X
the oxidation of promethazine by sodium hypochlorite and the coupling of the resulting product with metoclopraide in acetic acid medium to form a blue product with maximum absorption at 596 nm. Beer's law is obeyed over ...
LCC TENDOkVkdWNhdGlvbg~~; LCC:Science (General)Idioma eng
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Open Access
Spectrophotometric Determination of Promethazine in Pharmaceutical Preparations
Artículo
Acceso abierto Artículo DOAJ
Sh.H. Mohamad et al · University of Mosul, College of Education for Pure Science · 2006 · ISSN 1812-125X
A batch and flow injection (FIA) spectrophotometric methods have been developed for the determination of promethazine in aqueous solution and in pharmaceutical preparations. The methods are based on the reaction of prome...
LCC TENDOkVkdWNhdGlvbg~~; LCC:Science (General)Idioma eng
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Open Access
The preparation and properties of fibers based on V-HDPE/R-HDPE mixtures with different mass ratios
Artículo
Material complementario disponible Artículo DOAJ
Xiaoguang Tian et al · Frontiers Media S.A · 2026 · ISSN 2297-3079
In order to explore how different mass ratio combinations of virgin high-density polyethylene (V-HDPE)/recycled high-density polyethylene (R-HDPE) affect fibre and print quality, this study conducts a series of analyses....
LCC TENDOk1lY2hhbmljYWwgZW5naW5lZXJpbmcgYW5kIG1hY2hpbmVyeQ~~Idioma eng
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Spectrophotometric Assay of Dipyrone in Pharmaceutical Preparations Via Oxidative Coupling Reaction with
Artículo
Acceso abierto Artículo DOAJ
E.S. Salih et al · University of Mosul, College of Education for Pure Science · 2008 · ISSN 1812-125X
Abstract A simple, rapid and highly sensitive spectrophotometric method has been described for the determination of dipyrone in a bulk and in dosage forms. The method depends on the organic oxidative coupling reaction of...
LCC TENDOkVkdWNhdGlvbg~~; LCC:Science (General)Idioma eng
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Open Access
Spectrophotometric Determination of Catecholamines in Pharmaceutical Preparations Via Charge Transfer Complex Formation Using Bromanil Reagent
Artículo
Acceso abierto Artículo DOAJ
M. Al-Sharook · University of Mosul, College of Education for Pure Science · 2007 · ISSN 1812-125X
ABSTRACT A simple, rapid and sensitive spectrophotometric method has been developed for the determination of trace amounts of catecholamine drugs (dopamine, levodopa and methyldopa). The method is based on the interactio...
LCC TENDOkVkdWNhdGlvbg~~; LCC:Science (General)Idioma eng
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Open Access
Spectrophotometric Method for Determination of Chloramphenicol in Pharmaceutical Preparations using o-Chloranil Reagent
Artículo
Acceso abierto Artículo DOAJ
Thabit Al-Ghabsha et al · University of Mosul, College of Education for Pure Science · 2013 · ISSN 1812-125X
الخلاصة تم وصف طریقة طیفیة سهلة وحساسة لتقدیر الکلورامفینیکول بشکله النقی وفی مستحضراته الصیدلانیة. تعتمد الطریقة على ا...
LCC TENDOkVkdWNhdGlvbg~~; LCC:Science (General)Idioma eng
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Open Access
Ultrasonic-assisted preparation, characteristics and activity of Goji berry polysaccharide
Artículo
Acceso abierto Artículo DOAJ
Qiurui Hu et al · Elsevier · 2026 · ISSN 1756-4646
Goji berry polysaccharides have physiological functions such as antioxidant, anti-tumor, liver protection, blood sugar lowering, and immune regulation. They have good therapeutic effects on preventing and treating some c...
LCC LCC:Nutrition. Foods and food supplyIdioma eng
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Open Access
Biogenesis, preparation, characterization, therapeutic mechanisms and safety evaluation of plant-derived exosome-like nanovesicles in the treatment of ulcerative colitis
Artículo
Material complementario disponible Artículo DOAJ
Cailan Li et al · BMC · 2026 · ISSN 1477-3155
Abstract Ulcerative colitis remains a challenging clinical condition due to its complex etiology and the limitations of current therapies. Plant-derived exosome-like nanovesicles (PDELNs) represent a new class of natural...
LCC TENDOkJpb3RlY2hub2xvZ3k~; TENDOk1lZGljYWwgdGVjaG5vbG9neQ~~Idioma eng
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Carbonization of Asphaltic material and polyethylene by catalysis oxidation V2O5 for activated carbon preparation
Artículo
Acceso abierto Artículo DOAJ
Khaled Awaid et al · University of Mosul, College of Education for Pure Science · 2005 · ISSN 1812-125X
The research was aimed to use the residual asphaltic materials taken from northern refinery in the preparation of activated carbon by oxidation with V O5 in the presence of a stream of air for 3hrs at 350°C temp, .The r...
LCC TENDOkVkdWNhdGlvbg~~; LCC:Science (General)Idioma eng
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Open Access
Cucumis melo L. ‘Gama Melon Parfum’ Extract: Volatile Compound Profile, Optimization, Preparation and Perfume Radar
Artículo
Acceso abierto Artículo DOAJ
Indra Gunawan et al · Universitas Gadjah Mada · 2025 · ISSN 1410-5918
Perfume notes are a sophisticated blend of essential or fragrance oils that give perfumes a distinct scent. Melon notes are highly favored aromatic elements in perfumes. Melon (Cucumis melo L. ‘Gama Melon Parfum’), k...
LCC LCC:MedicineIdioma eng
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Open Access
Cultural significance, preparation process, and nutritional composition of Barobbo: a comprehensive ethnographic study of the traditional dish of the Bugis ethnic group in South Sulawesi
Artículo
Material complementario disponible Artículo DOAJ
Fatimah Fitriani Mujahidah et al · BMC · 2026 · ISSN 2352-6181
Abstract Barobbo, a traditional maize porridge from South Sulawesi, is both a nutritionally rich staple and a significant element of cultural heritage. Originating from the Bugis ethnic group, this dish reflects values o...
LCC LCC:Nutrition. Foods and food supplyIdioma eng
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