The cochlear nucleus angularis (NA) is widely assumed to form the starting point of a brain stem pathway for processing sound intensity in birds. Details of its function are unclear, however, and its evolutionary origin and relationship to the mammalian cochlear-nucleus complex are obscure. We have carried out extracellular single-unit recordings in the NA of ketamine-anesthetized barn owls. Th...

Synchronous generators have always been the dominant generation type in the grid. This fact affected both planning and operation of power systems. With the fast increase of wind power share in the grid in the last decade, the situation is changing. In some countries wind power represents already a consistent amount of the total generation. Wind turbines can be classified as non-synchronous gene...

A low-power spur-free precision amplifier, which uses input chopping and correlated double sampling for demodulation, is presented. This circuit employs an AC coupling between the first and the second stage that removes the first stage offset without causing ripple. The input rail-to-rail circuit, fabricated in a mixed 0.18–0.5 m CMOS technology, operates with supply ranging from 1.8 V to 5 V. ...

In this brief, a theoretical analysis on the limits of conventional chopper stabilization technique is presented and a solution conceived to improve the amplifier performance is proposed. The expected replicas of the 1 noise at the chopping frequency and its multiples are attenuated by a modified chopping control. Simulations done by using records of real 1 noise outputs showed that, by followi...

ABSTRAKSemakin meningkatnya berbagai olahan makanan, produsen bawang goreng dituntut untuk lebih mampu memenuhi kebutuhan UKM dan pasar yang semakin meningkat. Penggunaan alat atau mesin dalam proses produksi dirasa sangat penting guna menunjang tersebut. Tujuan dari penelitian ini adalah mendesain sebuah perajang dengan kapasitas 50 Kg/jam.Metode digunakan perancangan meliputi analisa kebutuha...

Bài báo này đã hệ thống hóa tư liệu điều tra, thám sát và khai quật ở các địa điểm Đá cũ vùng An Khê, tỉnh Gia Lai; xác định đặc trưng cơ bản của kỹ nghệ Khê với phức hợp kỹ thuật công cụ: Chopper- Choping tool/Mũi nhọn (Piks) hình khối tam diện/Bifaces - Handaxes. Trong đó, chopper-choping chủ yếu ở khu vực châu Á, bifaces handaxes nổi trội cho phương Tây cụ diện là nét riêng sớm (Việt Nam). K...

1. The responses of neurons in the ventral cochlear nucleus (VCN) of decerebrate cats are described with regard to their regularity of discharge and latency. Regularity is measured by estimating the mean and standard deviation of interspike intervals as a function of time during responses to short tone bursts (25 ms). This method extends the usual interspike-interval analysis based on interval ...

1. We have studied responses of anteroventral cochlear nucleus (AVCN) units to single-formant stimuli (SFS), in an effort to make quantitative comparisons with responses observed in auditory-nerve fibers (ANFs) to the same stimuli (Wang and Sachs 1993) and to reveal some of the signal processing mechanisms at the AVCN. Single-unit recordings and subsequent analyses were performed on each type o...

The ventral nucleus of the lateral lemniscus (VNLL) is a major auditory nucleus that sends a large projection to the inferior colliculus. Despite its prominence, the responses of neurons in the VNLL have not been extensively studied. Previous studies in nonecholocating species have used anesthesia, which is known to affect discharge patterns. In addition, there is disagreement about the proport...