The first description of the cleavage program of the palaeonemertean Carinoma tremaphoros (a member of a basal clade of the Nemertea) is illustrated by confocal microscopy and microinjection and compared to development of more derived nemerteans and other eutrochozoans (Annelida, Mollusca, Sipunculida and Echiurida). Lineage tracers were injected into individual blastomeres of C. tremaphoros at...

Nemerteans have been alleged to belong to a protostome clade called the Trochozoa that includes mollusks, annelids, sipunculids, echiurids, and kamptozoans and is characterized by, among other things, the trochophore larva. The trochophore possesses a prototroch, a preoral belt of specialized ciliary cells, derived from the trochoblast cells. Nemertea is the only trochozoan phylum for which pre...

The various clades of Lophotrochozoa possess highly disparate adult morphologies. Most of them, including Nemertea (ribbon worms), are postulated to develop via a pelagic larva of the trochophora type, which is regarded as plesiomorphic in Lophotrochozoa. With respect to the nervous system, the trochophora larva displays a set of stereotypic features, including an apical organ and trochal neuri...

चौदण्डीगढी उदयपुर जिल्ला चौदण्डी नगरपालिका वडा नं. १ डाँडामा अबस्थित छ । ऐतिहासिक गढी सामरिक तथा पुरातात्विक हिसाबले एक महत्वपूर्ण सम्पदा हो यो स्थान समुन्द्र सतहबाट ३००० फिट उचाई रहेको पूर्व पश्चिम फैलिएको महाभारत पर्वत श्रृङ्खलामा पर्दछ गढीको यस सोध­अध्ययनले तत्थ्यहरुबारेमा जानकारी प्राप्त गर्न सहयोग पु¥याउनेछ मध्यकालिन इतिहास बोकेको संरचनाको वर्तमान अबस्थालाई बिषय वस्तुको रुपमा लिई सोध अध्ययनले त्यसको विश्लेषण खोजेको अध्य...

Whenever unemployment stays high for an extended period, it is common to see analyses, statements, and rebuttals about the extent to which the high unemployment is structural, not cyclical. This essay views the Beveridge curve pattern of unemployment and vacancy rates and the related matching function as proxies for the functioning of the labor market and explores issues in that proxy relations...

We develop a search-theoretic model of financial intermediation and use it to study how trading frictions affect the distribution of asset holdings, asset prices, efficiency, and standard measures of liquidity. A distinctive feature of our theory is that it allows for unrestricted asset holdings, so market participants can accommodate trading frictions by adjusting their asset positions. We sho...

SHIELDS, J. D., WICKHAM, D. E., and KURIS, A. M. 1989 . Carcinonemertes regicides n.sp. (Nemertea), a symbiotic egg predator from the red king crab, Paralithodes camtschatica (Decapoda : Anomura), in Alaska. Can . J . Zool . 67 : 923-930 . A symbiotic nemertean worm, Carcinonemertes regicides n.sp ., found on red king crabs, Paralithodes camtschatica, is described and compared with other member...

We incorporate reference-dependent worker behavior into a search-matching model of the labor market, in which firms have all the bargaining power and productivity follows a log-linear AR(1) process. Motivated by Akerlof (1982) and Bewley (1999), we assume that existing workers’ output falls stochastically from its normal level when their wage falls below a "reference point", which (following Kő...