With respect to the problem of big volume, large weight and high power consumption of lunar sampler nowadays, the paper firstly described a novel flexible mini lunar regolith sampler. Then the vibration model of it is established while drilling. The drilling efficiency can be improved more effectively by controlling the lunar regolith sampler always in the resonance state. But the dynamical mod...

Improvements upon the Birkbeck bedload sampler (Reid et al., 1980) were implemented in the North Fork of Caspar Creek, a gravel-bedded stream draining 383 ha in northern coastal California. Bedload sediment falls through a slotted plate covering a .125-m steel box set within a formed concrete pit in the streambed. In the original Birkbeck design, a water-filled pressure pillow beneath the box r...

Given noisy observations Xi = θi + Zi, i = 1, . . . , n, with noise Zi iid ∼ N(0, σ), we wish to recover the signal θ with small mean-squared error. We consider the Minimum Kolmogorov Complexity Estimator (MKCE), defined roughly as the n-vector θ̂(X) solving the problem min Y K(Y ) subject to ‖X − Y ‖2l2n ≤ σ 2 · n, where K(Y ) denotes the length of the shortest computer program that can compute...

BACKGROUND When obtaining an arterial blood sample via percutaneous puncture, there is a risk of accidentally obtaining venous blood. Conventional methods of confirming arterial blood at the bedside, such as blood color and pulsatile return, can be misleading in patients with low blood pressure or hypoxemia. OBJECTIVE To determine if the arterial sampler filling time can be an accurate indic...

A culture-based colony counting method is the most widely used analytical technique for monitoring bioaerosols in both indoor and outdoor environments. However, this method requires several days for colony formation. In this study, our goal was fast monitoring (Sampling: 3 min, Detection: < 1 min) of indoor bioaerosol concentrations with ATP bioluminescence assay using a bioaerosol sampler. For...

A determination method for methyl iodide in the work place has been developed, using a diffusive sampler and a capillary gas chromatograph with a thermal desorption cold trap injector and an FID. The sampler consists of a glass tube (6 mm o.d., 4 mm i.d., 16 cm length) packed with porous polymer beads. The diffusion path of the sampler is made of a 3 mm i.d., 52 mm length poly (tetrafluoroethyl...

OBJECTIVES The purpose of this research was to develop a determination method for nitromethane (NM) in workplace air for risk assessment. METHODS A suitable sampler and appropriate desorption condition were selected by a recovery test in which a spiked sampler was used. The characteristics of the proposed method, such as recovery, detection limit, and reproducibility, and the storage stabilit...

Since its introduction by Green (1995), reversible jump MCMC has been recognised as a powerful tool for making posterior inference about a wide range of statistical problems. Despite enjoying considerable application across a variety of disciplines, the method’s popularity has been tempered by the common perception that reversible jump samplers can be difficult to implement. Beginning with a re...