We show that the oscillatory driving of crystal surfaces can induce pattern formation or smoothening. Depending on driving conditions, step bunching and meandering, mound formation, or surface smoothening may be seen in the presence of a kinetic asymmetry at the steps or kinks. We employ a step model to calculate the induced mass flux along misoriented surfaces, which accounts for surface dynam...

 Phytoplankton growth and microzooplankton grazing were investigated at one station in the Homa Lagoon from February to January in 2006-2007. Our results showed significant seasonal variations in phytoplankton dynamics. Microzooplankton was mainly composed of dinoflagellates and tintinnid ciliates and nauplii. Microzooplankton grazing increased with increasing of temperature. Grazing rate was ma...

We study the control of modulational instability and pattern formation in a nonlinear dissipative feedback system with a periodic modulation of the material refractive index. We use a one-dimensional photonic lattice in a single-mirror feedback configuration and identify three mechanisms for pattern control: bandgap suppression of instability modes, periodicity induced pattern modes, and orient...

We present some numerical results obtained from a simple individual-based model that describes clustering of organisms caused by competition. Our aim is to show that, even when a deterministic description developed for continuum models predicts no pattern formation, an individual-based model displays well-defined patterns, as a consequence of fluctuation effects caused by the discrete nature of...

It has been nearly a century since the Australasian Antarctic Expedition (hereafter, AAE) under the leadership of Sir Douglas Mawson first set foot on the Antarctic continent. The party arrived at what would become the base station of Cape Denison (67°S, 142.7°E; see Fig. 1) in January 1912. For the next two years, party members maintained a record of weather observations, the first extensive m...

In mediastinal dissection through a right thoracotomy, the definition of station 2 is arbitrary because no anatomical landmark indicates the line drawn tangentially to the upper margin of the aortic arch. We have developed a technique to localize it by evaluating the distance between the upper aortic arch and the azygos vein on a CT scan. This distance located intraoperatively above the azygos ...

Abstract Shahdadroud River is one of the most important rivers in Kerman province that during previous years has been threatened by drought and anthropogenic pollution. This river supplies some parts of drinking water of Kerman city and some vicinity villages. The main objective of the present study is consideration of pollution situation of the river; for this purpose, limnological and biolo...

This paper describes a new attitude control method for non-propulsive rotational state transition, Zero-Prop Maneuver, and demonstration onboard the International Space Station for a 90deg maneuver on November 5, 2006. The Space Station was maneuvered along a pre-planned trajectory which is optimized to take advantage of naturally occurring environmental torques in order to maintain CMG capacit...

During a 2 day period in mid-September 2006, more than 200, unconfirmed but identifiable, sei whale (Balaenoptera borealis) calls were collected as incidental data during a multidisciplinary oceanography and acoustics experiment on the shelf off New Jersey. Using a combined vertical and horizontal acoustic receiving array, sei whale movements were tracked over long distances (up to tens of kilo...

background: according to international labor organization (ilo), annually, an estimated 15 million people suffer occupational accidents and one million die from their accidents, throughout the world. occupational injuries and accidents can result in personal disability and impairment. the purpose of this study was to identify and describe the work related injuries in kashan during 2005-2006. ma...