Search results for "nap"

Crystal structure of (E)-2-(tert-butyl­amino)-4-(tert-butyl­imino)­naphthalen-1(4H)-one

2018

The title compound is the first example of a naphtho­quinone imine derivative crystallizing in the 4-imine/2-amine tautomeric form having bulky tert-butyl substituents at the N atoms.

Crystal structure of 5′′-benzylidene-1′-methyl-4′-phenyltrispiro[acenaphthylene-1,2′-pyrrolidine-3′,1′′-cyclohexane-3′′,2′′′-[1,3]dioxane]-2,6′′-dione

2016

In the title tris­piro compound, both the methyl-substituted pyrrolidine and dioxalane rings adopt a twist conformation. The cyclo­penta­none ring of the acenapthylen-1-one system adopts flattened envelope conformation, and the cyclo­hexa­none attached to the dioxalane ring adopts boat conformation. In the crystal, centrosymmetrically related mol­ecules are linked into dimers forming rings of (10) graph-set motif, which are further connected into chains parallel to the b axis by C—H⋯O contacts forming rings of (8) graph-set motif.

A decomposition approach for multidimensional knapsacks with family-split penalties

2022

The optimization of Multidimensional Knapsacks with Family-Split Penalties has been introduced in the literature as a variant of the more classical Multidimensional Knapsack and Multi-Knapsack problems. This problem deals with a set of items partitioned in families, and when a single item is picked to maximize the utility, then all items in its family must be picked. Items from the same family can be assigned to different knapsacks, and in this situation split penalties are paid. This problem arises in real applications in various fields. This paper proposes a new exact and fast algorithm based on a specific Combinatorial Benders Cuts scheme. An extensive experimental campaign computational…

The nasus gland: A new gland in soldiers of Angularitermes (Termitidae, Nasutitermitinae)

2015

Termites have developed many exocrine glands, generally dedicated to defence or communication. Although a few of these glands occur in all termite species, or represent synapomorphies of larger clades, others are morphological innovations of a single species, or a few related species. Here, we describe the nasus gland, a new gland occurring at the base of the nasus of Angularitermes soldiers. The nasus gland is composed of class 1, 2, and 3 secretory cells, a rare combination that is only shared by the sternal and tergal glands of some termites and cockroaches. The ultrastructural observations suggest that the secretion is produced by class 2 and 3 secretory cells, and released mostly by cl…

Quid iuris sub art. 428 c.p.p.

2008

Stress and strain distribution in perforated plate loaded in median plane

2019

The belly-button chord : connections of pre- and postnatal music education with early mother-child interaction

2009

Discrete cortical representations and their stability in the presence of synaptic turnover

2015

Population imaging in mouse auditory cortex revealed clustering of neural responses to brief complex sounds: the activity of a local population typically falls close to one out of a small number of observed states [1]. These clusters appear to group sets of auditory stimuli into a discrete set of activity patterns and could thereby form the basis for representations of sound categories. However, to be useful for the brain, such representations should be robust against fluctuations in the underlying circuitry, which are significant even in the absences of any explicit learning paradigm [2]. Here we introduce a novel firing rate based circuit model of mouse auditory cortex to study the emerge…

2015

Primary neuronal cultures share many typical features with the in vivo situation, including similarities in distinct electrical activity patterns and synaptic network interactions. Here, we use multi-electrode array (MEA) recordings from spontaneously active cultures of wildtype and GAD67-GFP transgenic mice to evaluate which spike parameters differ between GABAergic interneurons and principal, putatively glutamatergic neurons. To analyze this question we combine MEA recordings with optical imaging in sparse cortical cultures to assign individual spikes to visually-identified single neurons. In our culture system, excitatory and inhibitory neurons are present at a similar ratio as described…

Chapter 21 Immunohistochemical evidence for a co-transmitter role of opioid peptides in primary sensory neurons

1988

Publisher Summary The purpose of this chapter is to answer several open questions regarding opioid peptides by using a highly sensitive light microscopic (LM) immunohistochemical approach. The chapter mentions the immunohistochemical evidence for a co-transmitter role of opioid peptides in primary sensory neurons. It introduces the concept that there is a functionally important tandem constellation of transmitters in a specific nociceptive population of primary sensory afferents consisting of (1) an inhibitory transmitter family, the opioid peptides, and (2) an excitatory transmitter family, the tachykinins. Small-diameter primary sensory neurons not only transmit nociceptive messages to ce…