Results 41 to 50 of about 199,502 (291)

Improvement of device characteristics by multiple step implants or introducing a C gettering layer [PDF]

open access: yes, 1992
Ion implantation is used for realization of the collector in vertical bipolar transistors in a BiCMOS process. Secondary defects, remaining after annealing the implant damage, can give rise to an increased leakage current and to collector-emitter shorts.
Custer, J.S.   +4 more
core   +3 more sources

An intracellular transporter mitigates the CO2‐induced decline in iron content in Arabidopsis shoots

open access: yesFEBS Letters, EarlyView.
This study identifies a gene encoding a transmembrane protein, MIC, which contributes to the reduction of shoot Fe content observed in plants under elevated CO2. MIC is a putative Fe transporter localized to the Golgi and endosomal compartments. Its post‐translational regulation in roots may represent a potential target for improving plant nutrition ...
Timothy Mozzanino   +7 more
wiley   +1 more source

Standardized loads acting in knee implants [PDF]

open access: yes, 2014
The loads acting in knee joints must be known for improving joint replacement, surgical procedures, physiotherapy, biomechanical computer simulations, and to advise patients with osteoarthritis or fractures about what activities to avoid. Such data would
Bender, Alwina   +7 more
core   +6 more sources

Comparison of osseointegration in piezoimplants versus cylindrical implants [PDF]

open access: yes, 2019
BACKGROUND: Dental implants have been successful for the restoration of edentulous areas, but current techniques are inadequate in areas lacking sufficient bone volume. Piezoelectric surgery has shown encouraging effects on both osseous healing.
Fujinaka, Trevor
core  

Precaution, governance and the failure of medical implants: the ASR(TM) hip in the UK [PDF]

open access: yes, 2014
Hip implants have provided life-changing treatment, reducing pain and improving the mobility and independence of patients. Success has encouraged manufacturers to innovate and amend designs, engendering patient hopes in these devices.
Joyce, Thomas   +2 more
core   +1 more source

Hematopoietic (stem) cells—The elixir of life?

open access: yesFEBS Letters, EarlyView.
The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo   +4 more
wiley   +1 more source

Bioactive sphene-based ceramic coatings on cpTi substrates for dental implants: An in vitro study [PDF]

open access: yes, 2018
Titanium implant surface modifications have been widely investigated to favor the process of osseointegration. The present work aimed to evaluate the effect of sphene (CaTiSiO5) biocoating, on titanium substrates, on the in vitro osteogenic ...
Badocco, Denis   +8 more
core   +2 more sources

Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?

open access: yesFEBS Letters, EarlyView.
This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes   +3 more
wiley   +1 more source

Induction of osteogenesis by demineralized homologous and xenograft bone matrix [PDF]

open access: yesActa Cirúrgica Brasileira, 2003
The osteogenesis induction by demineralized bone matrix grafts remains as a challenge in the reconstructions of the mandible through homologous and xenografts or in implants in abdominal muscle.
Rosiris Dall'Agnol   +3 more
doaj   +1 more source

Bone healing in extraction sockets covered with collagen membrane alone or associated with porcine-derived bone graft: a comparative histological and histomorphometric analysis [PDF]

open access: yes, 2017
The present paper reports data of a randomized study aimed to analyse and compare the histologic and histomorphometric aspects of bone healing in extraction sites covered with collagen membrane alone or associated with porcine-derived bone ...
De Angelis, Francesca   +6 more
core   +2 more sources

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