Results 71 to 80 of about 46,051 (258)

مقایسه میزان گیر سیستم‏های مختلف اتچمنت در اوردنچرهای متکی بر ایمپلنت [PDF]

Journal of Mashhad Dental School, 2012
مقدمه: با توجه به تعداد زیاد افراد بی‏دندان با ریج‏های بی‏دندانی تحلیل رفته و مشکلاتی که این افراد با پروتز‏های کامل دارند نیاز به پروتزهای دندانی با کارایی بیشتر مثلاً اوردنچرها کاملاً محسوس است.
اسدالله احمدزاده, نجمه فریدون پور   +1 more
doaj  

Design of motion accuracy measurement device with three displacement sensors for machine tool and comparison of its setting method

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2014
The standard of test method for five-axis machining center is now under discussion by ISO. In its draft standard, the use of a measurement device with three displacement sensor is described in addition to the ball bar device that is well-known as the ...
Masashi YAMAJI, Naoki HAMABATA, Yukitoshi IHARA   +2 more
doaj   +1 more source

Development of a Solid‐Liquid Hybrid Electrolyte Composed of LiTa2PO8 and [C2mim][FSA]–Li[FSA] Ionic Liquid for Rechargeable Lithium Metal Batteries

Advanced Materials Interfaces, EarlyView.
LiTa2PO8 (LTPO) suffers from high interfacial resistance when paired with Li metal due to poor solid‐solid contact. Coating LTPO with an ionic liquid (IL) markedly improves interfacial stability, maintaining favorable resistance up to 2000 cycles. However, contact between IL‐coated LTPO and Li metal induces discoloration of LTPO, which is attributed to
Mizuki Fukuda, Dorian Unbehauer, Koichi Hamamoto, Akihito Imanishi, Yuwei Liu, Tetsuya Tsuda   +5 more
wiley   +1 more source

The Effects of Knife Milling and Ball Milling on Hydrogen Decrepitated Sm₂TM₁₇ Sintered Magnet Powder for Short-Loop Recycling

Metals
Sm2TM17 sintered magnets (TM = Co, Fe, Cu, Zr) are utilised in high-temperature rotor applications due to their stable magnetic properties at elevated temperatures of 200–350 °C.
James Thomas Griffiths, Oliver Peter Brooks, Viktoria Kozak, Alexis Lambourne, Alexander Campbell, Richard Stuart Sheridan   +5 more
doaj   +1 more source

A bar and ball attachment prosthesis over osseointegrated implants post mandibular resection

The Journal of Indian Prosthodontic Society, 2016
Rehabilitation of mandibular resection poses functional, esthetic, and psychological challenges. The deviation and rotation of the mandible toward the resected side leaves the patient with almost no option of chewing. This is aggravated if the patient is edentulous.
Sharad Gupta, Akshay Bhargava, Praful Mehra   +2 more
openaire   +3 more sources

Sulfonate‐Functionalized Boron Nitride Interfacial Layers for Long‐Life Zinc Metal Anodes

Advanced Materials Interfaces, EarlyView.
A multifunctional SDBS‐modified boron nitride nanosheet (SDBS–BNNS) interphase regulates Zn2+ transport and stabilizes the Zn/electrolyte interface in aqueous zinc batteries. Exposed sulfonate groups provide affinity for Zn2+, while the BNNS framework serves as a mechanically robust, water‐blocking barrier, homogenizing interfacial Zn2+ flux and ...
Ingyu Choi, Minseo Kim, Ki‐Min Roh, Sung Ho Song, Seulgi Kim, Dongju Lee   +5 more
wiley   +1 more source

Reconstruction of Gingival Mask around CAD-CAM Bar and Ball Attachment in Implant-Retained Overdenture

Case Reports in Dentistry
Gingival mask is a copy of the peri-implant tissue, which plays an important role in the fabrication of an optimal restoration. Losing the gingival mask is a clinical problem that complicates the process of restoration fabrication.
Samira Naybandi Atashi, Somayeh Zeighami
doaj   +1 more source

Wood‐Derived Nanocellulose‐Biocarbon Fresnel‐Zone Plate Lenses for Sub‐THz Frequency Applications

Advanced Materials Technologies, EarlyView.
Wood‐derived nanocellulose and lignin‐based biocarbon were combined to fabricate fully bio‐based Fresnel zone plate (FZP) lenses for sub‐terahertz frequencies. These sustainable FZP lenses exhibit low dielectric loss and high directivity, achieving performance comparable to that of metallic references, and remain functional under environmental stress ...
Riikka Haataja, Mikko Kokkonen, Niina Halonen, Sami Myllymäki, Umair Rafique, Mandeep Singh, Ossi Laitinen, Heli Jantunen, Kristiina Oksman, Henrikki Liimatainen   +9 more
wiley   +1 more source

Comparing the swallowing dynamics of mandibular implant overdentures retained with different attachment systems: A crossover study

Mansoura Journal of Dentistry
Objective This study's objective was to compare the swallowing dynamics for mandibular implant-retained overdentures with different attachment systems Materials and methods for this crossover study, 15 healthy patients were chosen from the outpatient ...
Nermeen Elsayed Mohamed Abdallah, Noha Hosny Elshaheed, Abdullah Mohammed Ibrahim Salem   +2 more
doaj   +1 more source

A novel geometric error identification methodology for the tilting head of five-axis machine tools based on double ball bar

MATEC Web of Conferences, 2018
The paper proposes a novel geometric error identification methodology for the tilting head of five-axis machine tools using double ball bar(DBB).Firstly, based on the motion condition of the tilting head of five-axis machine tools, three measurement ...
Fan Jinwei, Wu Changjun, Li Zhongsheng
doaj   +1 more source