Frailty is a well-recognized geriatric syndrome with various definitions and conceptual frameworks. This study aimed to use latent class analysis to discover potential subtypes of pre-frail and frail older people. Data from the I-Lan Longitudinal Aging Study (ILAS), a community-based cohort study was used for analysis. Latent class analysis was applied to characterize classes or subgroups with ...

In this study, the authors aimed to determine whether higher activity energy expenditure, assessed by using doubly labeled water, was associated with a reduced decline in mobility limitation among 248 older community-dwelling US adults aged 70-82 years enrolled in 1998-1999. Activity energy expenditure was calculated as total energy expenditure (assessed over 2 weeks by using doubly labeled wat...

This paper proposes a method to predict maximum traction force for autonomous mobile robots on rough terrain in order to improve maneuverability. For predicting traction force, we utilize friction-slip curves based on modified Brixius model derived empirically in terramechanics, which is a function of mobility number Bn′ and slip ratio S. Friction-slip curves include physical characteristics of...

Thin film n-channel transistors have been fabricated in polycrystalline silicon films crystallized using hydrogen plasma seeding, by using several processing techniques with 600 to 625 C or 1000 C as the maximum process temperature. The TFT’s from hydrogen plasma-treated films with a maximum process temperature of 600 C, have a linear field-effect mobility of 35 cm/Vs and an ON/OFF current rati...

The technological advances in wireless communication, microelectro-mechanical system (MEMS) technologies and digital electronics over the past few years have enabled the development of wireless sensor networks (WSN). In some applications, the WSN nodes are dedicated to be mobile rather than static. This requirement poses new and interesting challenges for both medium access control (MAC) and ro...

Internal mobility ratios of the two cations in the molten binary systems (Li, Na)Cl and (Na, K)C1 have been measured with Klemm's column method. From these and available data on the densities and conductivities the internal mobilities bLi, bNa and bK have been calculated. In (Li, Na)Cl, bLi is smaller than fcNa in the investigated composition and temperature range, and in (Na, K)C1, the Chemla ...

abstract different factors such as the quality of ova and sperm are involved in propagation process. mobility percentage, ph, mobility duration, compaction and osmolarity of sperm which affect the quality of sperm were tested in this research. this study was carried out in april 2011 in shahid ansari bony fishes propagation and rearing center. according to the results, mean and standard deviati...

Low field ion mobility spectrometry-mass spectrometry (IMS-MS) techniques exhibit low orthogonality, as inverse mobility often scales with mass to charge ratio. This inadequacy can be mitigated by adding vapor dopants, which may cluster with analyte ions and shift their mobilities by amounts independent of both mass and mobility of the ion. It is therefore important to understand the interactio...

We report electrical characterization of monolayer molybdenum disulfide (MoS2) devices using a thin layer of polymer electrolyte (PE) consisting of poly(ethylene oxide) (PEO) and lithium perchlorate (LiClO4) as both a contact-barrier reducer and channel mobility booster. We find that bare MoS2 devices (without PE) fabricated on Si/SiO2 have low channel mobility and large contact resistance, bot...