Purslane (Portulaca oleracea L.) is a fleshy herbaceous plant. So far, little information is available on the response of this plant to combined drought and heat stress. In this study, changes in physiological and metabolic levels were characterized after treatments with drought, heat and combined stresses. Both individual and combined stress treatments increased malondialdehyde (MDA), electrol...

background and aims. various materials and methods have been introduced for obturating cleaned and shaped root canal systems. this in vitro study aimed to evaluate the sealing ability of single-cone obturation technique with mineral tri-oxide aggregate and calcium-enriched mixture based on bacterial leakage approach. materials and methods. sixty-four single-canal teeth were prepared and randoml...

This work reports the use of nasal leakage to achieve the pressure difference for voicing in utterance-initial Spanish stops. Multiparametric aerodynamic and acoustic data were analyzed for six Spanish speakers. Two main patterns of prenasalization were identified in postpausal voiced stops: (i) delayed nasal closure relative to the oral closure and (ii) a momentary nasal opening (nasal burst) ...

Conventional leakage reduction techniques focus primarily on sub-threshold leakage mitigation, while neglecting the effect of gate leakage current. This work focuses on understanding gate leakage current and developing circuit techniques for total leakage minimization. We present an efficient technique for gate leakage of CMOS circuits. Input vector control and circuit reconfiguration technique...

A popular effective countermeasure to protect block cipher implementations against differential power analysis (DPA) attacks is to mask the internal operations of the cryptographic algorithm with random numbers. While the masking technique resists against first-order (univariate) DPA attacks, higher-order (multivariate) attacks were able to break masked devices. In this paper, we formulate a st...

The discrete Fourier transform (DFT) has become a main method of the harmonic analysis because it can be easily implemented in embedded system, but the conventional DFT is afflicted by the spectral leakage and the picket fence effect (PFE) in the asynchronous sampling. In this paper, the frequency-domain estimation method of the harmonic parameters, which is based on the windowing interpolated ...

Accurate division of the water-conducting fracturing zone (WCFZ) in mining overburden serves as an important basis to evaluate stability coal under water bodies. Research on WCFZ is conducive controlling surface subsidence and realizing safe water. Traditionally, generally determined by field observation (liquid leakage method, borehole television, etc.) or empirical formula. Although these met...

This article presents a BJT-based CMOS temperature sensor with wide sensing range from −50 °C to 180 °C. To effectively relax the resolution requirement and conversion time over entire improve energy efficiency, we introduce nonlinear subranging readout scheme together double sampling achieve dynamic reconfiguration of according ambient temperature. We further reduce power at high by devoting <...

In this paper, a time-frequency filter is designed, which can detect the frequency, amplitude and phase of any order harmonics and interharmonics in signal by means of time domain convolution. The theory analysis are carried to this method and the calculate formula are concluded, the spectral leakage and the barrier domino offect are shun, the non-integer order wave are eluded, which are engend...