نتایج جستجو برای: excavating mud

تعداد نتایج: 7260  

Journal: :Applied optics 2015
David K Lynch

New observations and analyses are presented of the opposition effect on mud cracks (mud polygons) on desert playas. The enhanced brightness of the surface near the antisolar point has been previously and correctly ascribed to two sources: shadow-hiding and coherent backscatter. The observations reported here suggest that a third optical mechanism influences the OE: some parts of the mud polygon...

2006
Jengchung V. Chen Yangil Park

This paper proposes research propositions to study on MMOG and MUD addictions based on their causes – flow state and social interaction. Though previous studies relate MMOG addictions to Internet addictions based on social interactions, this study after examining the underlying theories of Use and Gratification Theory and Flow Theory concludes that what cause MMOG addiction is flow experience n...

2003
Lie-Liang Yang Wei Hua Lajos Hanzo

In this contribution we propose and study a multicarrier direct-sequence code-division multiple-access (MC DSCDMA) scheme, which employs both time (T)-domain and frequency (F)-domain spreading. We investigate the achievable detection performance in the context of synchronous TF-domain spread MC DS-CDMA, when communicating over an additive white Gaussian noise (AWGN) channel. The performance of ...

2004
CAROL L. BOGGS BIRGITT DAU

Lepidoptera feed at mud puddles, dung, and carrion in a behavior known as puddling. Sodium and sometimes protein are feeding cues, are actively collected, and play a potentially important role in lepidopteran nutritional and mating ecology. We showed that montane butterßy species have feeding preferences among mud, herbivore dung, and carnivore dung, and that these preferences differed among bu...

1999
E. PHILLIPS

The phosphorus equilibration pattern and rate bctwecn mud and water was the same in natural Jcnkin sampler cores, in artificial cores, and in bottles in which dredged surface mud was packed by centrifuge. Thus any specific natural physico-chemical or bacteriological layering of the surface muds of lakes is relatively unimportant in phosphorus exchange, Phytoplankton or bacterial cells equilibra...

2017
Yi Ding Xiangjun Liu Pingya Luo Lixi Liang

Received: April 29, 2017 Revised: July 01, 2017 Accepted: August 30, 2017 Abstract: Introduction: Unloading phenomenon happens in the beginning of drilling and is able to change stress state around borehole. This change of stress state causes impact on rock structure and strength, thus affecting the evaluation of wellbore stability. Especially for determining initial mud pressure, unloading is ...

2003
Dušan Kocur Jana Čížová Stanislav Marchevský

-In this paper, the microstatistic multi-user detection receiver (MSF-MUD) will be introduced. The output of the MSF-MUD is taken as the sign of the multi-channel non-linear transformation of the output of a bank of matched filters (BMF). In the case of the MSF-MUD, this transformation is done by multi-channel conventional microstatistic filter (MCMF). Because the M-CMF theory has not been avai...

2006
Juan José González de la Rosa Isidro Lloret Galiana Carlos García Puntonet Antonio Moreno-Muñoz Juan Manuel Górriz

A higher-order frequency-domain characterization of termite activity (feeding and excavating) has been performed by means of analyzing diagonal slices of the bi-spectrum. Five sets of signals of different qualities were acquired using a high sensitivity probe-accelerometer. We conclude that it is possible to establish a third-order pattern (spectral track) associated to the termite emissions, a...

2012
JI-GANG CHEN JI-FANG YANG DAN LOU XIONG JUAN SONG-YAN WU

The discovery of a reo-like virus in cultures of the mud crab Scylla serrata (Forsskål, 1755) is reported here. Since May 2004, in Zhejiang Province, Peoples Republic of China, reo-like virus in mud crabs has reached serious epidemic levels, causing mortality rates exceeding 90%. Beginning in May 2004, moribund crabs from different districts and areas were investigated. By using electron micros...

2003
Dušan Kocur Jana Čížová Stanislav Marchevský

-In this paper, the microstatistic multi-user detection receiver (MSF-MUD) will be introduced. The output of the MSF-MUD is taken as the sign of the multi-channel non-linear transformation of the output of a bank of matched filters (BMF). In the case of the MSF-MUD, this transformation is done by multi-channel conventional microstatistic filter (MCMF). Because the M-CMF theory has not been avai...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید