MicroRNAs (miRNAs) are tiny non-coding ribonucleic acids (RNAs) that control gene expression of target messenger RNA (mRNAs) at the posttranscriptional level by mRNA degradation or translational repression. Thus, miRNAs have emerged as critical regulators during physiological and pathological processes (Thum et al, 2007). Recently, several reports have revealed an important role for miRNAs in c...

Swimming, i.e., being able to advance in the absence of external forces by performing cyclic shape changes, is particularly demanding at low Reynolds numbers. This is the regime of interest for microorganisms and microor nano-robots. We focus in this paper on a simple yet representative example: the three-sphere swimmer of Najafi and Golestanian [16]. For this system, we show how to cast the pr...

this paper describes a simple, physically-based conceptual model utilizing watershed drainage characteristics for rainfall-runoff simulation. this conceptual physiographic model is essentially based on the work of najafi (2003), which has led to a model compris-ing the main tributary subwatersheds and a single main channel subwatershed. the ki-nematic wave (kw) theory is used to describe flow o...

Where, T z denotes the transpose of the vector z . Many problems in operations research, management science, various scientific computing and engineering areas can lead to the solution of an LCP of the form (1.1). For more details (see, [1,2,3] and the references therein). The early motivation for studying the LCP (M, q) was because the KKT optimality conditions for linear and quadratic program...

Electro-thermal simulation of superconducting nanowire avalanche photodetectors Francesco Marsili, Faraz Najafi, Charles Herder, Karl K. Berggren Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA. Kavli Institute of Nanoscience, Delft University of Technology, Lorentzweg 1, 2628CJ Delft,...

Swimming in circles occurs in a variety of situations at low Reynolds number. Here we propose a simple model for a swimmer that undergoes circular motion, generalising the model of a linear swimmer proposed by Najafi and Golestanian (Phys. Rev. E 69, 062901 (2004)). Our model consists of three solid spheres arranged in a triangular configuration, joined by two links of time-dependent length. Fo...

Cancer is the third most common cause of death following cardiovascular disease and accident (Mohebbi et al., 2008; Moradpour and Fatemi, 2013) and gastrointestinal (GI) cancers are the most frequent cancers among males and second to females’ breast cancer in Iran (Mohebbi et al., 2011). The epidemiological characteristic of upper GI cancer has markedly changed over recent decades so that oesop...

Dear Dr. Alvares: Many low-income families face the problem of not being able to support the medical and dental needs of their children. Resources such as health fairs and school visits are often the only means by which parents are able to provide medical and dental care for their kids. The UCLA School of Dentistry joined forces with a UCLA undergraduate club, the Predental Student Outreach Pro...

Abstract The Water Quality Index (WQI) is a single, deferential metric for describing the state of water quality as whole, which aids in selection effective remediation strategies. Fifteen surface samples were taken from Euphrates AlHaydria neighborhood AL-Najaf (Iraq). Various physicochemical parameters, including pH, total dissolved solids (TDS), calcium, chloride, sulfate, and electrical con...

The coupled problem of hydrodynamics and solute transport for the Najafi-Golestanian three-sphere swimmer is studied, with Reynolds number set to zero P\'eclet numbers (Pe) ranging from 0.06 60. adopted method numerical simulation a finite element code based upon FEniCS library. For executing optimal locomotion gait, we report Sherwood as function Pe in homogeneous fluids confirm that little ga...