Results 41 to 50 of about 15,360 (259)

Aptamer‐Directed Porous DNA Nanocomposite Hydrogel for Active Pulp Preservation: Immunomodulation, Stem Cell Recruitment and Reparative Dentinogenesis

Advanced Science, EarlyView.
This study presents an injectable DNA‐based porous hydrogel integrating catechol motifs and targeting aptamers for pulpitis management. Upon in situ crosslinking, the scaffold actively recruits endogenous dental pulp stem cells, restores redox homeostasis, and modulates immune responses.
Luhui Cai, Huan Yu, Zihan Ni, Kan Chen, I‐Chen Tsai, Zeyu Bao, Shuo Sun, Weichang Li, Yunhua Chen, Qiong Xu   +9 more
wiley   +1 more source

PENENTUAN KANDUNGAN LOGAM ESENSIAL (Fe, Zn DAN Cu) DALAM DAUN SIRIH MERAH (Piper crocatum) SEGAR, AIR REBUSAN DAN AIR SEDUHANNYA DENGAN METODE SPEKTROSKOPI SERAPAN ATOM(SSA)

Jurnal Riset Kimia, 2015
Vol 7 No 2 ABSTRACT Determination of essential metals (Fe, Zn and Cu) in red betel leaf has been carried out by using Atomic Absorption Spectrophotometer (AAS).
Indrawati -, Willsant Saputra, Refilda -
doaj   +1 more source

Lighting up Macrophage Reprogramming Assists Immunosuppressive Niche Modulation in Primary Tumors and Tumor‐Draining Lymph Nodes of Breast Cancer

Advanced Science, EarlyView.
This study develops an intelligent NIR‐II‐responsive nanoplatform to combat immunosuppression in breast cancer. It enables real‐time visualization of macrophage activity via “off‐on” fluorescence while simultaneously reprogramming macrophages through the CSF‐1R and CD47‐SIRPα pathways.
Yingbo Li, Di Chang, Jie Yang, Ying Bai, Min Chen, Daoshuang Li, Zuoyu Xu, Jiaxin Yuan, Xiaoxuan Xu, Zhiqi Zhang, Yize Li, Zixin Chen, Jinbing Xie, Zebin Xiao, Shenghong Ju   +14 more
wiley   +1 more source

DETERMINATION OF LEAD AND CADMIUM LEVELS IN CANNED SARDINES USING ATOMIC ABSORPTION SPECTROPHOTOMETRY

JIIS: Jurnal Ilmiah Ibnu Sina
Canned sardines are hermetically sealed and processed to ensure sterility and provide practical convenience in processing fish. Contact between food and canned causes the migration of metal elements into them.
Citra Hayu Adi Makayasa, Ririn Sumiyani, Ryanto Budiono, Natasha Kezia Wijaya, Nancy Vellisia, Hidayatul Umami   +5 more
doaj   +1 more source

Flow analysis-hydride generation-gas phase derivative molecular absorption spectrophotometric determination of antimony in antileishmanial drugs

Química Nova, 2009
In the present work, the development of a method based on the coupling of flow analysis (FA), hydride generation (HG), and derivative molecular absorption spectrophotometry (D-EAM) in gas phase (GP), is described in order to determine total antimony in ...
Máximo Gallignani, María del Rosario Brunetto, Fernando Ovalles   +2 more
doaj   +1 more source

A Microgel Platform Enables Site‐Specific Intestinal Delivery of Lactoferrin, Improving its Bioavailability for Targeted Alleviating Liver Injury and Colitis

Advanced Science, EarlyView.
This work first time reports an eco‐friendly desert plant food‐based polysaccharide ASKP microgels which have intestinal site‐specific release properties which can achieve small‐intestine or colon targeting capability via different cross‐linking chemistry.
Huiling Yan, Yixuan Li, Shanan Chen, Pengcheng Du, Kaiwen Wu, Hui Zhang, Kasper Hettinga, Lina Zhang, Gergely Toldi, Fazheng Ren, Yuan Li   +10 more
wiley   +1 more source

Recent Developments in the Speciation and Determination of Mercury Using Various Analytical Techniques

Journal of Analytical Methods in Chemistry, 2015
This paper reviews the speciation and determination of mercury by various analytical techniques such as atomic absorption spectrometry, voltammetry, inductively coupled plasma techniques, spectrophotometry, spectrofluorometry, high performance liquid ...
Lakshmi Narayana Suvarapu, Sung-Ok Baek
doaj   +1 more source

STUDIES ON CHITOSAN - BENZALDEHYDE INTERACTION IN A HOMOGENEOUS SYSTEM AND ITS ADSORPTION BEHAVIOR OF METAL IONS IN AQUEOUS SOLUTION

ASEAN Journal on Science and Technology for Development, 2017
In this work, N-benzylidene chitosan was synthesized by chitosan –benzaldehyde interaction in a homogeneous system. The modified polymers were characterized by means of infrared (IR) spectra, X-Ray diffraction and thermal analysis.
Do Truong Thien, Nguyen Van Tuyen, Tran Thi Y Nhi   +2 more
doaj   +1 more source

Determination of Lead in Urine by Atomic Absorption Spectrophotometry [PDF]

Occupational and Environmental Medicine, 1968
A method for the determination of lead in urine by means of atomic absorption spectrophotometry (AAS) is described. A combination of wet ashing and extraction with ammonium pyrrolidine dithiocarbamate into isobutylmethylketone was used. The sensitivity was about 0·02 μg./ml. for 1% absorption, and the detection limit was about 0·02 μg./ml.
S, Selander, K, Cramér
openaire   +2 more sources

Understanding the Catalytic Determinant role of Diaphorase‐Like Subunit in Formate Dehydrogenases via Redox Couples

Advanced Science, EarlyView.
A unique mechanism of catalytic bias regulated by diaphorase‐like subunit in formate dehydrogenase from Rhodobacter aestuarii is revealed. The diaphorase‐like subunit functions act as a biological “voltage rheostat” that controls the slow release of NADH to regulate redox balance, biasing the enzyme's catalytic preference toward CO2 reduction over ...
Kuncheng Zhang, Weisong Liu, Hao Su, Huijuan Cui, Yuanming Wang, Zhiguang Zhu, Chun You, Lingling Zhang   +7 more
wiley   +1 more source