Results 1 to 10 of about 918,355 (214)

Nano Composite Fe-Co-V /Zeolite as a Nano Carrier for Folic Acid Drug Controlled Release [PDF]

open access: yesTrends in Pharmaceutical Sciences, 2021
large reserves of zeolites has been one of the comparative advantages of the country in this field and provides economic justification for its use in a variety of applications, including medical and pharmaceutical fields such as artificial kidney ...
Shima Zangeneh Yousef Abadi   +2 more
doaj   +1 more source

A fluorescence sensor for nitroreductase detection in hypoxic cells and zebrafish

open access: yesResults in Chemistry, 2021
Nitroreductase (NTR) is a type of cytoplasmic enzyme that depends on flavin mononucleotide or flavin adenine dinucleotide, and that is widely present in tumor cells where it increases during hypoxia. NTR can effectively reduce aromatic nitro compounds to
Wan Sun   +7 more
doaj   +1 more source

Hydrogel-Based Microneedle as a Drug Delivery System

open access: yesPharmaceutics, 2023
The skin is considered the largest and most accessible organ in the human body, and allows the use of noninvasive and efficient strategies for drug administration, such as the transdermal drug delivery system (TDDS).
David Filho   +4 more
doaj   +1 more source

A controlled-release microchip [PDF]

open access: yesNature, 1999
Much previous work in methods of achieving complex drug-release patterns has focused on pulsatile release from polymeric materials in response to specific stimuli, such as electric or magnetic fields, exposure to ultrasound, light or enzymes, and changes in pH or temperature.
J T, Santini, M J, Cima, R, Langer
openaire   +2 more sources

Syntheses, crystal structure, thermal behavior, and anti-tumor activity of three ternary metal complexes with 2-chloro-5-nitrobenzoic acid and heterocyclic compounds

open access: yesHeterocyclic Communications, 2022
Three complexes, namely complex (1), complex (2), and complex (3), were synthesized and characterized by X-ray diffraction, thermogravimetric study, and elemental study.
Zhang Zhongyu   +6 more
doaj   +1 more source

Crystal structure of (1,10-phenanthroline-κ2N,N′)-bis(3-thiophenecarboxylato-κ2O,O′)copper(II), C22H14N2O4S2Cu

open access: yesZeitschrift für Kristallographie - New Crystal Structures, 2021
C22H14N2O4S2Cu, orthorhombic, Pbcn (no. 60), a = 20.171(7) Å, b = 9.684(3) Å, c = 10.372(4) Å, V = 2025.9(12) Å3, Z = 4, Rgt(F) = 0.0334, wRref(F2) = 0.0908, T = 273.15 K.
Zhang Zhongyu   +3 more
doaj   +1 more source

Ecological risk of microplastic toxicity to earthworms in soil: A bibliometric analysis

open access: yesFrontiers in Environmental Science, 2023
Accumulation of microplastics (MPs) in soil is a serious environmental concern. Addition of exogenous MPs can alter structure and physicochemical properties of and material transport in soil.
Sen Guo   +22 more
doaj   +1 more source

The crystal structure of aqua-bis(6-chloropicolinato-κ2N,O)copper(II), C12H8Cl2N2O5Cu

open access: yesZeitschrift für Kristallographie - New Crystal Structures, 2021
C12H8Cl2N2O5Cu, triclinic, P1‾$P‾{1}$ (no. 2), a = 6.800(2) Å, b = 9.086(3) Å, c = 11.363(4) Å, α = 86.701(6)°, β = 84.830(5)°, γ = 77.353(5)°, V = 681.7(4) Å3, Z = 2, Rgt(F) = 0.0250, wRref(F2) = 0.0655, T = 296(2) K.
Zhang Zhongyu   +2 more
doaj   +1 more source

Soybean-Oil-Modified Petrochemical-Source Polyester Polyurethane Improves the Nutrient Release Performance of Coated Urea

open access: yesAgronomy, 2023
Due to the difficult degradation and high cost of polyester polyols (PPs), their further development in controlled-release fertilizers (CRFs) has been limited.
Jingjing Dong   +12 more
doaj   +1 more source

Advanced Technologies for Oral Controlled Release: Cyclodextrins for Oral Controlled Release [PDF]

open access: yesAAPS PharmSciTech, 2011
Cyclodextrins (CDs) are used in oral pharmaceutical formulations, by means of inclusion complexes formation, with the following advantages for the drugs: (1) solubility, dissolution rate, stability, and bioavailability enhancement; (2) to modify the drug release site and/or time profile; and (3) to reduce or prevent gastrointestinal side effects and ...
Salústio, Paulo José   +6 more
openaire   +3 more sources

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