scholarly journals Mimicking the Secretory Action of a Gland by a Composite System Made of a pH-Responsive Surfactant-Based Hydrogel and a Dialysis Membrane

ACS Omega ◽  
2018 ◽  
Vol 3 (12) ◽  
pp. 16777-16783 ◽  
Author(s):  
Alessio Cesaretti ◽  
Irene Di Guida ◽  
Naishka E. Caldero-Rodríguez ◽  
Catia Clementi ◽  
Raimondo Germani ◽  
...  
Keyword(s):  
Composite System ◽  
Ph Responsive ◽  
Dialysis Membrane ◽  
Secretory Action

Paclitaxel controlled delivery using a pH-responsive functional-AuNP/block-copolymer vesicular nanocarrier composite system

2018 ◽  
Vol 117 ◽  
pp. 177-186 ◽  
Author(s):  
Athina Liaskoni ◽  
Athina Angelopoulou ◽  
Efstathia Voulgari ◽  
Maria-Teodora Popescu ◽  
Constantinos Tsitsilianis ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Composite System ◽  
Controlled Delivery ◽  
Ph Responsive

A novel curcumin-loaded PLGA micromagnetic composite system for controlled and pH-responsive drug delivery

2019 ◽  
Vol 573 ◽  
pp. 188-195 ◽  
Author(s):  
Srinivasan Ayyanaar ◽  
Mookkandi Palsamy Kesavan ◽  
Gandhi Sivaraman ◽  
Balaji Maddiboyina ◽  
Jamespandi Annaraj ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Composite System ◽  
Ph Responsive

Integration of catalytic capability and pH-responsive wettability in a VxOy-based dual-mesh system: towards solving the trade-off between the separation flow rate and degradation efficiency

2021 ◽  
Author(s):  
Ya'nan Liu ◽  
Ruixiang Qu ◽  
Xiangyu Li ◽  
Huajun Zhai ◽  
Shuaiheng Zhao ◽  
...  
Keyword(s):  
Flow Rate ◽  
Composite System ◽  
Degradation Efficiency ◽  
Water Soluble ◽  
Separation Flow ◽  
Ph Responsive ◽  
Trade Off ◽  
Oil Water ◽  
Dual Mesh

A catalysis mesh and pH-responsive wettability mesh composite system has been applied for fast separation of oil/water mixtures and full degradation of water-soluble pollutants in situ.

Freeze substitution fixation of fungal reproductive structures and spores

1989 ◽  
Vol 47 ◽  
pp. 990-991
Author(s):  
C. W. Mims ◽  
E. A. Richardson
Keyword(s):  
Plant Pathogens ◽  
Freeze Substitution ◽  
Uranyl Acetate ◽  
Chemical Fixation ◽  
Dialysis Membrane ◽  
Razor Blade ◽  
Thin Sections ◽  
Reproductive Structures ◽  
Dry Down ◽  
Diamond Knife

The advantages of freeze substitution fixation over conventional chemical fixation for preservation of ultrastructural details in fungi have been discussed by various authors. As most ascomycetes, basidiomycetes and deuteromycetes do not fix well using conventional chemical fixation protocols, freeze substitution has attracted the attention of many individuals interested in fungal ultrastructure. Thus far most workers using this technique on fungi have concentrated on thin walled somatic hyphae. However, in our laboratory we have experimented with the use of freeze substitution on a variety of fungal reproductive structures and spores with promising results.Here we present data on freeze substituted samples of sporangia of the zygomycete Umbellopsis vinacea, basidia of Exobasidium camelliae var. gracilis, developing teliospores of the smut Sporisorium sorghi, germinating teliospores of the rust Gymnosporangium clavipes, germinating conidia of the deuteromycete Cercosporidium personatum, and developing ascospores of Ascodesmis nigricans.Spores of G. clavipes and C. personatum were deposited on moist pieces of sterile dialysis membrane where they hydrated and germinated. Asci of A. nigricans developed on pieces of dialysis membrane lying on nutrient agar plates. U. vinacea was cultured on small pieces of agar-coated wire. In the plant pathogens E. camelliae var. gracilis and S. sorghi, a razor blade was used to remove smal1 pieces of infected host issue. All samples were plunged directly into liquid propane and processed for study according to Hoch.l Samples on dialysis membrane were flat embedded. Serial thin sections were cut using a diamond knife, collected on slot grids, and allowed to dry down onto Formvar coated aluminum racks. Sections were post stained with uranyl acetate and lead citrate.

Processing and characterization of YBa2Cu3O7−x/Ag composites

1990 ◽  
Vol 48 (4) ◽  
pp. 46-47
Author(s):  
Jafar Javadpour ◽  
Bradley L. Thiel ◽  
Sarikaya Mehmet ◽  
Ilhan A. Aksay
Keyword(s):  
Composite System ◽  
Precursor Solution ◽  
Microstructural Development ◽  
Superconducting Properties ◽  
Practical Applications ◽  
Nitrate Precursor ◽  
Cold Pressed ◽  
Tape Cast ◽  
Composite Samples

Practical applications of bulk YBa2Cu3O7−x materials have been limited because of their inadequate critical current density (jc) and poor mechanical properties. Several recent reports have indicated that the addition of Ag to the YBa2Cu3O7−x system is beneficial in improving both mechanical and superconducting properties. However, detailed studies concerning the effect of Ag on the microstructural development of the cermet system have been lacking. Here, we present some observations on the microstructural evolution in the YBa2Cu3O7−x/Ag composite system.The composite samples were prepared by mixing various amounts (2.5 - 50 wt%) AgNO3 in the YBa2Cu3O7−x nitrate precursor solution. These solutions were then spray dried and the resulting powders were either cold pressed or tape cast. The microstructures of the sintered samples were analyzed using SEM (Philips 515) and an analytical TEM (Philips 430T).The SEM micrographs of the compacts with 2.5 and 50 wt% Ag addition sintered at 915°C (below the melting point of Ag) for 1 h in air are displayed in Figs. 1 and 2, respectively.

Islamic Law and Society

1990 ◽  
Vol 7 (2) ◽  
pp. 177-191
Author(s):  
Louay M. Safi
Keyword(s):  
Composite System ◽  
Islamic Law ◽  
Legal Theory ◽  
Fifth Century ◽  
Muslim Community ◽  
Social Growth ◽  
The Social ◽  
Collective Experience ◽  
Law And Morality ◽  
The Impact

Shari'ah (Islamic law) has been the dominant moral and legal code ofMuslim societies for the gnxter part of their history. During the early centuriesof Islam, Shari'ah hcilitated the social growth and develojment of the Muslims,growth that culminaa in the establishment of a vast emph and an outstandmgcivilization. By the close of the fifth century of Islam, however, Shari'ahbegan to lose its role as the guiding force that inspired Muslim creativityand ingenuity and that nurtured the growing spirit of the Muslim community(Ummah). Consequently, the Ummah entered a period of stagnation thatgradually gave way to intellectual decline and social decadence. Regrettably,this painful trend continues to be more or less 'part of the individualconsciousness and collective experience of Muslims.This paper attempts to trace the development of the principles of Islamicjurisprudence, and to assess the impact of Shari'ah on society. It argues thatthe law ceased to grow by the sixth century of Islam as a result of thedevelopment of classical legal theory; more specifically, law was put on hold,as it were, after the doctrine of the infallibility of ijma' (juristic consensus)was articulated. The rigid principles of classical theory, it is contended, havebeen primarily induced by the hulty epistemology employed.by sixth-centuryjurists.Shari'ah, or Islamic law, is a comprehensive system encompassing thewhole field of human experience. It is not simply a legal system, but rathera composite system of law and morality. That is, Islamic law aspires to regulateall aspects of human activities, not only those that may entail legalconsequences. Hence, all actions and relationships are evaluated in accordancewith a scale of five moral standards.According to Shari'ah, an act may be classified as obligatory (wajib),recommended (mandub), permissible (mubah), reprehensible (makruh), orprohibited (haram). These five categories reflect the varying levels of moral ...

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