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To remove nitrate and phosphate from sewage efficiently, current ultrafiltration membranes need improved permselectivity, antifouling, and antibacterial properties. Herein, a new hybrid membrane mo...

Experiments show that high purity titanium (HP-Ti) samples have been successfully processed by equal channel angular pressing (ECAP) using a 120 degree die and a relatively slow ram speed at cryogenic temperature when the HP-Ti rods were trapped with 6061 Al alloy tubes. Optical microscopy (OM) and transmission electron microscopy (TEM) were utilized to investigate the deformed microstructure of the material. Typical microstructures of shear bands and deformation twinning were found in the deformed microstructure of ECAPed HP-Ti. Furthermore, the SAED pattern analysis of the twinning structures revealed that the deformation twinning occurred on {112} planes. Keywords: High purity titanium; ECAP; TEM; Deformation twinning; Cryogenic temperature.

Computer architecture is transiting from the multicore era into the heterogeneous era in which heterogeneous architectures use on-chip networks to access shared resources and how a network is configured will likely have a significant impact on overall performance and power consumption. Recently, heterogeneous network on chip (NoC) has been proposed not only to achieve performance comparable to that of the NoCs with buffered routers but also to reduce buffer cost and energy consumption. However, heterogeneous NoC design for heterogeneous GPU-CPU architectures has not been studied in depth. This paper first evaluates the performance and power consumption of a variety of static hot-potato based heterogeneous NoCs with different buffered and bufferless router placements, which is helpful to explore the design space for heterogeneous GPU-CPU interconnection. Then it proposes Unidirectional Flow Control (UFC), a simple credit-based flow control mechanism for heterogeneous NoC in GPU-CPU architectures to control network congestion. UFC can guarantee that there are always unoccupied entries in buffered routers to receive flits coming from adjacent bufferless routers. Our evaluations show that when compared to hot-potato routing, UFC improves performance by an average of 14.1% with energy increased by an average of 5.3% only.

In the field of mechanical installation and repairing, drawing devices are often used to disassemble or push up components of various types of axie and set. Differential thread usually consists of two sets of threads, which differ in the aspect of side pitch, the movement distance of differential thread when it runs a circle should be the deviation of the two spiral side pitches. Through the application of differential thread, it enables us to make changes in the transmission of these two screw pairs making relative movement. Based on this principle, when it is made into the application of manual drawing device, it optimized structure of drawing device, receiving a better result.

As a kind of new renewable energy, wind power has been used in power systems more and more. Wind power has a installed capacity more than 10% of the power grid’s where the wind resources are abundant in our country. Because the wind power has the characteristics of randomness, intermittence, uncontrollability and so on, we can’t be sure about the continuity and stability. With the increase of the wind power installed capacity, the influence of wind power is expanding. By applying the PSCSD, this paper analyse the power gird’s stability of different wind power proportion and different access points.

Dark silicon leads the integration development of multi-core chip to a standstill, which is mainly due to on-chip power constraints. NoC power occupies a significant portion of system power. Therefore, reducing the NoC power can reduce the dark silicon degree and reduce the performance degradation caused by the dark silicon. In this paper, we firstly analyzed the NoC power variation on the dark silicon degree, which has not been done before, and proposed a heterogeneous NoC scheme to reduce the dark silicon degree. By evaluating the power of homogeneous NoCs and heterogeneous NoCs separately under different power budgets, we verified that when NoCs adopt this heterogeneous scheme, most of the workloads would get one more core power saving from the dark silicon. In other words, at least one more core could be lighted on and the dark silicon degree can be reduced.

A NoC is a critical shared resource among these concurrently-executing applications, significantly affecting system performance, and energy efficiency. In this paper, we propose B2L, a buffered and bufferless hybrid NoC design that can satisfy application's performance requirements, while the system's energy consumption is minimized. This can be achieved by designing a dedicated buffered and bufferless NoC separately, and dynamically control flits from different apps or within the same app to flow across the two networks according to application's requirement and network status.