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Z-scan spectroscopy is used to reveal ultra-broadband nonlinear absorption across different orders of resonant transitions in single-wall carbon nanotube ensembles, demonstrating the potential of nanotubes for nonlinear optics beyond the conventional NIR range.
In this paper, we present source follower PMOS Read and bit-line under-drive techniques to improve the operation speed as compared to present commercial SRAM compilers. A source follower PMOS is utilized to connect local bit-lines (LBL) to global bit-lines (GBL) instead of using a NAND gate. To further improve the discharging time from LBL to GBL, we propose a bit-line under-drive circuit to reduce...
Here we report the development of a family of nanoparticles that can withstand the harsh conditions of the stomach and intestine, avoid systemic absorption, and provide good optical contrast for photoacoustic imaging. The hydrophobicity of naphthalocyanine dyes was exploited to generate frozen micelles (nanonaps), with tunable near-infrared absorption. Nanonaps, following oral administration in mice,...
Webster signal timing method is adopted for single intersection based on investigation of path conditions and traffic flow. Key intersection and public cycle time are determined by comparing cycle time of all intersections. Based on the spacing between adjacent intersections and path speed, signal timing and phase difference are adjusted so that some vehicles can go through multi intersections continuously...
Objective: To offer reference data for standardized study the clinical syndrome differentiation for the senile patients of post lumbar surgery, we study on the feature of Traditional Chinese Medicine(TCM) syndrome differentiation for the senile patients of post lumbar surgery. Methods: Adopting clinical epidemiological method, clinical investigation on 359 senile patients of post lumbar surgery was...
Objective: To analyze the component law of Chinese medicines for gout by mutual information mining. Methods: Chinese medicine prescriptions for gout were collected and recorded in the database, and then the frequency analysis of herbs, correlation coefficient between herbs, core combinations of herbs were analyzed by using modified mutual information, complex system entropy cluster and unsupervised...
Improving the medical quality and guarantee the safety is the eternal theme of medical industry, which emphasizes the patient-centered and happiness-oriented. The healthcare service is not only a technological but also a high-risk industry. Since that risk exists throughout the medical work, risk prediction and management have become an important part of hospital management. The comprehensive risk...
The purpose of this study was to determine whether acupuncture is effective in reducing pain and swelling around the knee and improving range of motion (ROM) during the early rehabilitation after anterior cruciate ligament(ACL) reconstruction. Following ACL reconstruction, 80 patients were randomly assigned to either an acupuncture treatment group (Group A) or a control group (Group C). In Group A,...
A 19–27-Gb/s receiver comprising of a continuous time linear equalizer (CTLE) followed by a 2 tap decision feedback equalizer embedded clock and data recovery circuit is implemented. The hybrid CDR is operated at half rate, which is incorporated into a broad band PLL to facilitate ISI and jitter suppression over wide band operation. A quadrature relaxation type oscillator is proposed to provide the...
In this paper, we propose an architecture for low power SRAM designs by using hierarchical bitlines for SRAM macros with the charge sharing Read technique. Moreover, sense amplifiers are important circuits for accessing the data from internal storage nodes to data outputs. We compare two types of sense amplifiers, a current-latched sense amplifier (CLSA) and a voltage-latched sense amplifier (VLSA),...
The paper presents a novel Class-C type QVCO using a capacitive source coupling mechanism to enhance the startup robustness over process-temperature-voltage variations. Class-C type oscillator has superior phase noise performance with low power consumption at the cost of weak startup. In this design, complementary architecture and capacitive source degeneration coupling are employed to increase the...
This paper presents an analytical study on the outage performance of cognitive decode-and-forward (DF) two-way relaying networks with underlay spectrum sharing. The bidirectional protocol, i.e., two time-slot multiple access broadcast (MABC) and three time-slot time division broadcast (TDBC), are considered. We propose a definition of outage probability by jointly considering outage events in the...
A bandgap reference generator with a compensation circuit against temperature variation is presented. The bandgap reference generator provides a reference current of 10μA with temperature coefficient (TC) of only 4.36ppm/°C under temperature range from −40 to 125°C. The chip is fabricated in a 0.18-μm standard CMOS process with a 1.8V power supply voltage, and the active die area is 0.008mm2.
Multi-node decode and forward protocol(MNDFP) can be used to improve transmission performance and expand coverage. However, in traditional MNDFP, the number of cooperative nodes(relays) is fixed, regardless of the Channel Quality(CQ). In this paper, we proposed a selective strategy for MNDFP, which can adjust the amount of cooperative nodes adaptively based on the CQ. We give the closed-form expression...
This paper presents a low-power voltage regulator for wireless sensor nodes. The circuit, implemented in a 90 nm CMOS process, generates a process-temperature-voltage independent 0.5 V while only consuming 26 nA. The output voltage variation is within 27 mV when power supply changes from 1 to 2 V and can provide a 15 μA load current. A fast settling technique is employed to improve the startup response...
Cognitive-radio-networks with multiple input multiple output is an effective method to improve spectrum efficiency. Linear pre-coders is a crucial technology to realize this goal. However, most of existing algorithm developed based on the Gaussian input assumption. This assumption limited the application of linear precoding and caused great performance loss. In this paper, for such a problem, a linear...
In order to better understand phosphorus (P) cycling in wetland ecosystem, the characteristics of phosphorus fractions in sediments of Heituwa construction wetland system were investigated using soil organic phosphorus (Po) fractionation scheme. For seven sediments, total phosphorus (TP) varied from 531.9 to 1177.3 mg kg-1 and inorganic phosphorus (Pi) was the main P fraction which accounting for...
In this paper, a pedaled, self-balanced, personal mobility vehicle is developed. The vehicle is structurally similar to a pedaled unicycle but uses a brushless DC (BLDC) hub motor as its main driving wheel. In order to reduce the interference and provide a better human-machine interaction, a novel balancing controller with the adaptation capability is proposed. This balancing controller, when working...
A 40 Gbps optical receiver analog front end integrating a trans-impedance amplifier (TIA) and a limiting amplifier is presented. To achieve wide band operation, nested feedback TIA and interleaving post amplifier with split series-peaking are proposed in this design. This receiver provides the transimpedance of 92 dBOhm, input-referred noise of 14 pA/√Hz, −3dB bandwidth of 35 GHz, and 800mVpp differential...
Recently, most of the traffic on the existing networks is occupied by the content distribution and retrieval. The existing technologies such as the P2P technology and DHT technology although have evolved the scalability, robust, effective of the content distribution, there are some problems existing. P2P technology has been implemented to store and deliver the content stored in the P2P overlay, while...
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