Results 121 to 130 of about 13,868 (296)

CUT PICK CUT LINE DISTRIBUTION AND THE FINDINGS OF A STUDY OF LOAD SPECTRUM

open access: yesJixie qiangdu, 2017
According to studying Angle cutting conditions of shearer drum cutting teeth distribution on the influence law of load spectrum,which provides reference for the design of the cutter tooth,in which equivalent test tooth holder to roll the same spiral ...
HAO ZhiYong, ZHANG Pei, SONG ZhenDuo
doaj  

Growth dynamics, skeletochronology, and histovariability of the theropod dinosaur Berthasaura leopoldinae

open access: yesThe Anatomical Record, EarlyView.
Osteohistological sampling on different bones of theropod dinosaur documents discrepant age record, growth, and metabolism. This could result unprecise paleobiological inferences if samplings are based on single bones. However, multi‐bone sampling can attenuate these discrepancies, helping to infer growth dynamics and physiology of these extinct ...
Geovane Alves de Souza   +3 more
wiley   +1 more source

Influence of Chip Breaker Geometric Shape on the Cutting Performance of Cermet Tools

open access: yesEng
Ti(C,N)-based cermet turning inserts with two distinct chip breaker groove structures were employed to investigate the influence of chip breaker geometry on cutting performance.
Shuwen Yu   +4 more
doaj   +1 more source

Dental crown morphological variation and heterodonty in carcharhiniform sharks

open access: yesThe Anatomical Record, EarlyView.
Abstract Elasmobranch teeth are highly mineralized structures that constitute the majority of the fossil record for this group. Despite their taxonomic and evolutionary significance, detailed descriptions of dental morphology remain scarce. The order Carcharhiniformes, the most diverse among sharks, comprises 304 valid species that display remarkable ...
Flávia Zanini, Karla D. A. Soares
wiley   +1 more source

Pin Row Loading Analysis of Scraper Conveyor under Oblique Cut Condition

open access: yesJixie chuandong, 2016
According to the force analysis of roller,the equation set of roller in the process of cutting by three- axis force is derived.Combining the MATLAB programming,the curve of the before and after roller load changing with the rotation angle under the ...
Mao Jun, Tian Song, Chen Hongyue
doaj  

Interaction Mechanisms between Blades and Maize Root–Soil Composites as Affected by Key Factors: An Experimental Analysis

open access: yesAgriculture
To design a high-performance stubble-breaking device, studying the interaction mechanisms between blades and root–soil composites is urgent. A simplified experimental method was proposed to investigate the cutting process and the effects of key factors ...
Xuanting Liu   +5 more
doaj   +1 more source

“Peel cutting” – A new cutting method for difficult-to-cut workpieces with hard oxide surfaces

open access: yes, 2023
A new cutting method named “peel cutting” is proposed in this research to suppress notch wear in machining of metals with hard oxide surfaces. In general, metals are produced by hot deformation processes like rolling, forging, and extrusion, which cause ...
Shamoto, Eiji   +3 more
core  

Descriptive, comparative, and functional anatomy of the facial musculature in cattle (Bos taurus)

open access: yesThe Anatomical Record, EarlyView.
Abstract Facial expressions can provide insight into animal emotions and pain, but no standardized system for assessing the entire facial display in cattle (Bos taurus Linnaeus) exists. The Facial Action Coding System (FACS), originally developed for humans, identifies distinct facial movements based on mimetic muscles.
Maja Söderlind   +6 more
wiley   +1 more source

Studies on Quantification of Sensuous Sharpness and Mechanical Shapness of Wood Cutting Tools. XVII.Effects of the Length on the Rake Face of the Knife between the Knife Edge and the Chip-Breaker Edge upon Variation of Cutting Force in Oblique Cutting of Wood Parallel to the Grain with the Knife Equipped with a Chip Breaker [PDF]

open access: yes, 1993
The purpose of this report is to clarify the effects of the inclination angle (i(K)) of the knife, the distance (ℓ(k)) on the knife rake-face from the knife edge to the chipbreaker edge, and the grain angle (φ) of the workpiece upon the variations of the
杉山, 滋
core  

Nasal soft‐tissue anatomy of Triceratops and other horned dinosaurs

open access: yesThe Anatomical Record, EarlyView.
Abstract Although ceratopsid dinosaurs possess a characteristically hypertrophied narial region, soft‐tissue anatomy associated with such a skeletal structure and their biological significance remain poorly understood. The present study provides the first comprehensive hypothesis on the soft‐tissue anatomy in the ceratopsid rostrum based on the Extant ...
Seishiro Tada   +5 more
wiley   +1 more source

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